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* [gcc r14-6031] Add tests for validating future C permerrors
@ 2023-12-01 7:12 Florian Weimer
0 siblings, 0 replies; only message in thread
From: Florian Weimer @ 2023-12-01 7:12 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:370432688259aed1c99f9b29d8d09e534fb94037
commit r14-6031-g370432688259aed1c99f9b29d8d09e534fb94037
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Dec 1 08:10:12 2023 +0100
Add tests for validating future C permerrors
The dg-error directives for gcc.dg/permerror-system.c can be generated
using (for the most part at least):
perl -ne 'print if s,.*(/\* \{ dg-error .*) } \*/$,$1 "" { target *-*-* } $. } */,' \
< gcc/testsuite/gcc.dg/permerror-default.c
gcc/testsuite/
* gcc.dg/permerror-default.c: New test.
* gcc.dg/permerror-fpermissive.c: Likewise.
* gcc.dg/permerror-fpermissive-nowarning.c: Likewise.
* gcc.dg/permerror-gnu89-nopermissive.c: Likewise.
No permerrors yet, so this matches gcc.dg/permerror-gnu89.c
for now.
* gcc.dg/permerror-gnu89-pedantic.c: New test.
* gcc.dg/permerror-gnu89.c: Likewise.
* gcc.dg/permerror-noerror.c: Likewise.
* gcc.dg/permerror-nowarning.c: Likewise.
* gcc.dg/permerror-pedantic.c: Likewise.
* gcc.dg/permerror-system.c: Likewise.
Diff:
---
gcc/testsuite/gcc.dg/permerror-default.c | 85 ++++++++++++++++++++++
.../gcc.dg/permerror-fpermissive-nowarning.c | 11 +++
gcc/testsuite/gcc.dg/permerror-fpermissive.c | 85 ++++++++++++++++++++++
.../gcc.dg/permerror-gnu89-nopermissive.c | 85 ++++++++++++++++++++++
gcc/testsuite/gcc.dg/permerror-gnu89-pedantic.c | 85 ++++++++++++++++++++++
gcc/testsuite/gcc.dg/permerror-gnu89.c | 85 ++++++++++++++++++++++
gcc/testsuite/gcc.dg/permerror-noerror.c | 85 ++++++++++++++++++++++
gcc/testsuite/gcc.dg/permerror-nowarning.c | 10 +++
gcc/testsuite/gcc.dg/permerror-pedantic.c | 85 ++++++++++++++++++++++
gcc/testsuite/gcc.dg/permerror-system.c | 9 +++
10 files changed, 625 insertions(+)
diff --git a/gcc/testsuite/gcc.dg/permerror-default.c b/gcc/testsuite/gcc.dg/permerror-default.c
new file mode 100644
index 00000000000..ea0be1dc89f
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/permerror-default.c
@@ -0,0 +1,85 @@
+/* { dg-options "" } */
+
+/* Overview test for C permerrors. This test should be kept in sync with the
+ other permerror-* tests. If new permerrors are added, test cases should be
+ added to this and the other files. */
+
+void
+implicit_function_declaration (void)
+{
+ f1 (); /* { dg-warning "'f1' \\\[-Wimplicit-function-declaration\\\]" } */
+}
+
+extern implicit_int_1; /* { dg-warning "'implicit_int_1' \\\[-Wimplicit-int\\\]" } */
+typedef implicit_int_2; /* { dg-warning "'implicit_int_2' \\\[-Wimplicit-int\\\]" } */
+extern implicit_int_3 (void); /* { dg-warning "'implicit_int_3' \\\[-Wimplicit-int\\]" } */
+implicit_int_4 (i) /* { dg-warning "return type defaults to 'int' \\\[-Wimplicit-int\\\]" } */
+/* { dg-warning "type of 'i' defaults to 'int' \\\[-Wimplicit-int\\\]" "" { target *-*-*} .-1 } */
+{
+ (const) 0; /* { dg-warning "type defaults to 'int' in type name \\\[-Wimplicit-int\\\]" } */
+}
+
+extern int missing_parameter_type (i); /* { dg-warning "parameter names \\\(without types\\\) in function declaration\n" } */
+
+
+int *
+int_conversion_1 (int flag)
+{
+ void f2 (int *);
+ flag ? "1" : 1; /* { dg-warning "pointer/integer type mismatch in conditional expression \\\[-Wint-conversion\\\]" } */
+ flag ? 1 : "1"; /* { dg-warning "pointer/integer type mismatch in conditional expression \\\[-Wint-conversion\\\]" } */
+ f2 (flag); /* { dg-warning "passing argument 1 of 'f2' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ {
+ int i1 = &flag; /* { dg-warning "initialization of 'int' from 'int \\\*' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ i1 = &flag; /* { dg-warning "assignment to 'int' from 'int \\\*' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ }
+ return flag; /* { dg-warning "returning 'int' from a function with return type 'int \\\*' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+}
+
+int
+int_conversion_2 (int flag)
+{
+ void f3 (int);
+ f3 (&flag); /* { dg-warning "passing argument 1 of 'f3' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ {
+ int *i1 = flag; /* { dg-warning "initialization of 'int \\\*' from 'int' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ i1 = flag; /* { dg-warning "assignment to 'int \\\*' from 'int' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ }
+ return &flag; /* { dg-warning "returning 'int \\\*' from a function with return type 'int' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+}
+
+int *
+incompatible_pointer_types (int flag)
+{
+ void f4 (int *);
+ flag ? __builtin_abs : __builtin_labs; /* { dg-warning "pointer type mismatch in conditional expression \\\[-Wincompatible-pointer-types\\\]" } */
+ {
+ int *p1 = __builtin_abs; /* { dg-warning "initialization of 'int \\\*' from pointer to '__builtin_abs' with incompatible type 'int \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ p1 = __builtin_abs; /* { dg-warning "assignment to 'int \\\*' from pointer to '__builtin_abs' with incompatible type 'int \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ {
+ int *p2 = incompatible_pointer_types; /* { dg-warning "initialization of 'int \\\*' from incompatible pointer type 'int \\\* \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ p2 = incompatible_pointer_types; /* { dg-warning "assignment to 'int \\\*' from incompatible pointer type 'int \\\* \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ {
+ int *p3 = &p2; /* { dg-warning "initialization of 'int \\\*' from incompatible pointer type 'int \\\*\\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ p3 = &p2; /* { dg-warning "assignment to 'int \\\*' from incompatible pointer type 'int \\\*\\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ f4 (&p2); /* { dg-warning "passing argument 1 of 'f4' from incompatible pointer type \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ if (flag)
+ return __builtin_abs; /* { dg-warning "returning pointer to '__builtin_abs' of type 'int \\\(\\\*\\\)\\\(int\\\)' from a function with incompatible type 'int \\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ else
+ return incompatible_pointer_types; /* { dg-warning "returning 'int \\\* \\\(\\\*\\\)\\\(int\\\)' from a function with incompatible return type 'int \\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+}
+
+void
+return_mismatch_1 (void)
+{
+ return 0; /* { dg-warning "'return' with a value, in function returning void \\\[-Wreturn-mismatch\\\]" } */
+}
+
+int
+return_mismatch_2 (void)
+{
+ return; /* { dg-warning "return' with no value, in function returning non-void \\\[-Wreturn-mismatch\\\]" } */
+}
diff --git a/gcc/testsuite/gcc.dg/permerror-fpermissive-nowarning.c b/gcc/testsuite/gcc.dg/permerror-fpermissive-nowarning.c
new file mode 100644
index 00000000000..f15b21ef43d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/permerror-fpermissive-nowarning.c
@@ -0,0 +1,11 @@
+/* { dg-options "-fpermissive -Wno-implicit-function-declaration -Wno-implicit-int -Wno-int-conversion -Wno-incompatible-pointer-types -Wno-return-mismatch" } */
+
+/* This test checks that permerrors can be disabled using -Wno-* options even
+ if -fpermissive is used. */
+
+#include "permerror-default.c"
+
+/* Ideally, we do not want to see any warnings here, but this warning is not
+ yet controlled by its own option. */
+
+/* { dg-warning "parameter names \\\(without types\\\) in function declaration\n" "" { target *-*-* } 22 } */
diff --git a/gcc/testsuite/gcc.dg/permerror-fpermissive.c b/gcc/testsuite/gcc.dg/permerror-fpermissive.c
new file mode 100644
index 00000000000..139f35ad1c0
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/permerror-fpermissive.c
@@ -0,0 +1,85 @@
+/* { dg-options "-fpermissive" } */
+
+/* Overview test for C permerrors. This test should be kept in sync with the
+ other permerror-* tests. If new permerrors are added, test cases should be
+ added to this and the other files. */
+
+void
+implicit_function_declaration (void)
+{
+ f1 (); /* { dg-warning "'f1' \\\[-Wimplicit-function-declaration\\\]" } */
+}
+
+extern implicit_int_1; /* { dg-warning "'implicit_int_1' \\\[-Wimplicit-int\\\]" } */
+typedef implicit_int_2; /* { dg-warning "'implicit_int_2' \\\[-Wimplicit-int\\\]" } */
+extern implicit_int_3 (void); /* { dg-warning "'implicit_int_3' \\\[-Wimplicit-int\\]" } */
+implicit_int_4 (i) /* { dg-warning "return type defaults to 'int' \\\[-Wimplicit-int\\\]" } */
+/* { dg-warning "type of 'i' defaults to 'int' \\\[-Wimplicit-int\\\]" "" { target *-*-*} .-1 } */
+{
+ (const) 0; /* { dg-warning "type defaults to 'int' in type name \\\[-Wimplicit-int\\\]" } */
+}
+
+extern int missing_parameter_type (i); /* { dg-warning "parameter names \\\(without types\\\) in function declaration\n" } */
+
+
+int *
+int_conversion_1 (int flag)
+{
+ void f2 (int *);
+ flag ? "1" : 1; /* { dg-warning "pointer/integer type mismatch in conditional expression \\\[-Wint-conversion\\\]" } */
+ flag ? 1 : "1"; /* { dg-warning "pointer/integer type mismatch in conditional expression \\\[-Wint-conversion\\\]" } */
+ f2 (flag); /* { dg-warning "passing argument 1 of 'f2' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ {
+ int i1 = &flag; /* { dg-warning "initialization of 'int' from 'int \\\*' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ i1 = &flag; /* { dg-warning "assignment to 'int' from 'int \\\*' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ }
+ return flag; /* { dg-warning "returning 'int' from a function with return type 'int \\\*' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+}
+
+int
+int_conversion_2 (int flag)
+{
+ void f3 (int);
+ f3 (&flag); /* { dg-warning "passing argument 1 of 'f3' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ {
+ int *i1 = flag; /* { dg-warning "initialization of 'int \\\*' from 'int' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ i1 = flag; /* { dg-warning "assignment to 'int \\\*' from 'int' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ }
+ return &flag; /* { dg-warning "returning 'int \\\*' from a function with return type 'int' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+}
+
+int *
+incompatible_pointer_types (int flag)
+{
+ void f4 (int *);
+ flag ? __builtin_abs : __builtin_labs; /* { dg-warning "pointer type mismatch in conditional expression \\\[-Wincompatible-pointer-types\\\]" } */
+ {
+ int *p1 = __builtin_abs; /* { dg-warning "initialization of 'int \\\*' from pointer to '__builtin_abs' with incompatible type 'int \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ p1 = __builtin_abs; /* { dg-warning "assignment to 'int \\\*' from pointer to '__builtin_abs' with incompatible type 'int \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ {
+ int *p2 = incompatible_pointer_types; /* { dg-warning "initialization of 'int \\\*' from incompatible pointer type 'int \\\* \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ p2 = incompatible_pointer_types; /* { dg-warning "assignment to 'int \\\*' from incompatible pointer type 'int \\\* \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ {
+ int *p3 = &p2; /* { dg-warning "initialization of 'int \\\*' from incompatible pointer type 'int \\\*\\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ p3 = &p2; /* { dg-warning "assignment to 'int \\\*' from incompatible pointer type 'int \\\*\\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ f4 (&p2); /* { dg-warning "passing argument 1 of 'f4' from incompatible pointer type \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ if (flag)
+ return __builtin_abs; /* { dg-warning "returning pointer to '__builtin_abs' of type 'int \\\(\\\*\\\)\\\(int\\\)' from a function with incompatible type 'int \\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ else
+ return incompatible_pointer_types; /* { dg-warning "returning 'int \\\* \\\(\\\*\\\)\\\(int\\\)' from a function with incompatible return type 'int \\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+}
+
+void
+return_mismatch_1 (void)
+{
+ return 0; /* { dg-warning "'return' with a value, in function returning void \\\[-Wreturn-mismatch\\\]" } */
+}
+
+int
+return_mismatch_2 (void)
+{
+ return; /* { dg-warning "return' with no value, in function returning non-void \\\[-Wreturn-mismatch\\\]" } */
+}
diff --git a/gcc/testsuite/gcc.dg/permerror-gnu89-nopermissive.c b/gcc/testsuite/gcc.dg/permerror-gnu89-nopermissive.c
new file mode 100644
index 00000000000..6d42bc61d5c
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/permerror-gnu89-nopermissive.c
@@ -0,0 +1,85 @@
+/* { dg-options "-std=gnu89 -fno-permissive" } */
+
+/* Test for C89 dialect mode, with new permerrors enabled. In most
+ cases where the compiler warnings in C89 mode, it should issue a
+ permerror with -fno-permissive. */
+
+void
+implicit_function_declaration (void)
+{
+ f1 (); /* { dg-bogus "-Wimplicit-function-declaration" } */
+}
+
+extern implicit_int_1; /* { dg-bogus "-Wimplicit-int" } */
+typedef implicit_int_2; /* { dg-bogus "-Wimplicit-int" } */
+extern implicit_int_3 (void); /* { dg-bogus "-Wimplicit-int" } */
+implicit_int_4 (i) /* { dg-bogus "-Wimplicit-int" } */
+/* Directive here in the other files. */
+{
+ (const) 0; /* { dg-bogus "-Wimplicit-int" } */
+}
+
+extern int missing_parameter_type (i); /* { dg-warning "parameter names \\\(without types\\\) in function declaration\n" } */
+
+
+int *
+int_conversion_1 (int flag)
+{
+ void f2 (int *);
+ flag ? "1" : 1; /* { dg-warning "pointer/integer type mismatch in conditional expression \\\[-Wint-conversion\\\]" } */
+ flag ? 1 : "1"; /* { dg-warning "pointer/integer type mismatch in conditional expression \\\[-Wint-conversion\\\]" } */
+ f2 (flag); /* { dg-warning "passing argument 1 of 'f2' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ {
+ int i1 = &flag; /* { dg-warning "initialization of 'int' from 'int \\\*' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ i1 = &flag; /* { dg-warning "assignment to 'int' from 'int \\\*' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ }
+ return flag; /* { dg-warning "returning 'int' from a function with return type 'int \\\*' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+}
+
+int
+int_conversion_2 (int flag)
+{
+ void f3 (int);
+ f3 (&flag); /* { dg-warning "passing argument 1 of 'f3' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ {
+ int *i1 = flag; /* { dg-warning "initialization of 'int \\\*' from 'int' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ i1 = flag; /* { dg-warning "assignment to 'int \\\*' from 'int' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ }
+ return &flag; /* { dg-warning "returning 'int \\\*' from a function with return type 'int' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+}
+
+int *
+incompatible_pointer_types (int flag)
+{
+ void f4 (int *);
+ flag ? __builtin_abs : __builtin_labs; /* { dg-warning "pointer type mismatch in conditional expression \\\[-Wincompatible-pointer-types\\\]" } */
+ {
+ int *p1 = __builtin_abs; /* { dg-warning "initialization of 'int \\\*' from pointer to '__builtin_abs' with incompatible type 'int \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ p1 = __builtin_abs; /* { dg-warning "assignment to 'int \\\*' from pointer to '__builtin_abs' with incompatible type 'int \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ {
+ int *p2 = incompatible_pointer_types; /* { dg-warning "initialization of 'int \\\*' from incompatible pointer type 'int \\\* \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ p2 = incompatible_pointer_types; /* { dg-warning "assignment to 'int \\\*' from incompatible pointer type 'int \\\* \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ {
+ int *p3 = &p2; /* { dg-warning "initialization of 'int \\\*' from incompatible pointer type 'int \\\*\\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ p3 = &p2; /* { dg-warning "assignment to 'int \\\*' from incompatible pointer type 'int \\\*\\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ f4 (&p2); /* { dg-warning "passing argument 1 of 'f4' from incompatible pointer type \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ if (flag)
+ return __builtin_abs; /* { dg-warning "returning pointer to '__builtin_abs' of type 'int \\\(\\\*\\\)\\\(int\\\)' from a function with incompatible type 'int \\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ else
+ return incompatible_pointer_types; /* { dg-warning "returning 'int \\\* \\\(\\\*\\\)\\\(int\\\)' from a function with incompatible return type 'int \\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+}
+
+void
+return_mismatch_1 (void)
+{
+ return 0; /* { dg-warning "'return' with a value, in function returning void \\\[-Wreturn-mismatch\\\]" } */
+}
+
+int
+return_mismatch_2 (void)
+{
+ return; /* { dg-bogus "-Wreturn-mismatch" } */
+}
diff --git a/gcc/testsuite/gcc.dg/permerror-gnu89-pedantic.c b/gcc/testsuite/gcc.dg/permerror-gnu89-pedantic.c
new file mode 100644
index 00000000000..465a16f5f9a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/permerror-gnu89-pedantic.c
@@ -0,0 +1,85 @@
+/* { dg-options "-std=gnu89 -pedantic-errors" } */
+
+/* Overview test for C permerrors. This test should be kept in sync with the
+ other permerror-* tests. If new permerrors are added, test cases should be
+ added to this and the other files. */
+
+void
+implicit_function_declaration (void)
+{
+ f1 (); /* { dg-bogus "-Wimplicit-function-declaration" } */
+}
+
+extern implicit_int_1; /* { dg-bogus "-Wimplicit-int" } */
+typedef implicit_int_2; /* { dg-bogus "-Wimplicit-int" } */
+extern implicit_int_3 (void); /* { dg-bogus "-Wimplicit-int" } */
+implicit_int_4 (i) /* { dg-bogus "-Wimplicit-int" } */
+/* Directive here in the other files. */
+{
+ (const) 0; /* { dg-bogus "-Wimplicit-int" } */
+}
+
+extern int missing_parameter_type (i); /* { dg-error "parameter names \\\(without types\\\) in function declaration\n" } */
+
+
+int *
+int_conversion_1 (int flag)
+{
+ void f2 (int *);
+ flag ? "1" : 1; /* { dg-error "pointer/integer type mismatch in conditional expression \\\[-Wint-conversion\\\]" } */
+ flag ? 1 : "1"; /* { dg-error "pointer/integer type mismatch in conditional expression \\\[-Wint-conversion\\\]" } */
+ f2 (flag); /* { dg-error "passing argument 1 of 'f2' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ {
+ int i1 = &flag; /* { dg-error "initialization of 'int' from 'int \\\*' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ i1 = &flag; /* { dg-error "assignment to 'int' from 'int \\\*' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ }
+ return flag; /* { dg-error "returning 'int' from a function with return type 'int \\\*' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+}
+
+int
+int_conversion_2 (int flag)
+{
+ void f3 (int);
+ f3 (&flag); /* { dg-error "passing argument 1 of 'f3' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ {
+ int *i1 = flag; /* { dg-error "initialization of 'int \\\*' from 'int' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ i1 = flag; /* { dg-error "assignment to 'int \\\*' from 'int' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ }
+ return &flag; /* { dg-error "returning 'int \\\*' from a function with return type 'int' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+}
+
+int *
+incompatible_pointer_types (int flag)
+{
+ void f4 (int *);
+ flag ? __builtin_abs : __builtin_labs; /* { dg-warning "pointer type mismatch in conditional expression \\\[-Wincompatible-pointer-types\\\]" } */
+ {
+ int *p1 = __builtin_abs; /* { dg-error "initialization of 'int \\\*' from pointer to '__builtin_abs' with incompatible type 'int \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ p1 = __builtin_abs; /* { dg-error "assignment to 'int \\\*' from pointer to '__builtin_abs' with incompatible type 'int \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ {
+ int *p2 = incompatible_pointer_types; /* { dg-error "initialization of 'int \\\*' from incompatible pointer type 'int \\\* \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ p2 = incompatible_pointer_types; /* { dg-error "assignment to 'int \\\*' from incompatible pointer type 'int \\\* \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ {
+ int *p3 = &p2; /* { dg-error "initialization of 'int \\\*' from incompatible pointer type 'int \\\*\\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ p3 = &p2; /* { dg-error "assignment to 'int \\\*' from incompatible pointer type 'int \\\*\\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ f4 (&p2); /* { dg-error "passing argument 1 of 'f4' from incompatible pointer type \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ if (flag)
+ return __builtin_abs; /* { dg-error "returning pointer to '__builtin_abs' of type 'int \\\(\\\*\\\)\\\(int\\\)' from a function with incompatible type 'int \\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ else
+ return incompatible_pointer_types; /* { dg-error "returning 'int \\\* \\\(\\\*\\\)\\\(int\\\)' from a function with incompatible return type 'int \\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+}
+
+void
+return_mismatch_1 (void)
+{
+ return 0; /* { dg-error "'return' with a value, in function returning void \\\[-Wreturn-mismatch\\\]" } */
+}
+
+int
+return_mismatch_2 (void)
+{
+ return; /* { dg-bogus "-Wreturn-mismatch" } */
+}
diff --git a/gcc/testsuite/gcc.dg/permerror-gnu89.c b/gcc/testsuite/gcc.dg/permerror-gnu89.c
new file mode 100644
index 00000000000..66f7789269f
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/permerror-gnu89.c
@@ -0,0 +1,85 @@
+/* { dg-options "-std=gnu89" } */
+
+/* Overview test for C permerrors. This test should be kept in sync with the
+ other permerror-* tests. If new permerrors are added, test cases should be
+ added to this and the other files. */
+
+void
+implicit_function_declaration (void)
+{
+ f1 (); /* { dg-bogus "-Wimplicit-function-declaration" } */
+}
+
+extern implicit_int_1; /* { dg-bogus "-Wimplicit-int" } */
+typedef implicit_int_2; /* { dg-bogus "-Wimplicit-int" } */
+extern implicit_int_3 (void); /* { dg-bogus "-Wimplicit-int" } */
+implicit_int_4 (i) /* { dg-bogus "-Wimplicit-int" } */
+/* Directive here in the other files. */
+{
+ (const) 0; /* { dg-bogus "-Wimplicit-int" } */
+}
+
+extern int missing_parameter_type (i); /* { dg-warning "parameter names \\\(without types\\\) in function declaration\n" } */
+
+
+int *
+int_conversion_1 (int flag)
+{
+ void f2 (int *);
+ flag ? "1" : 1; /* { dg-warning "pointer/integer type mismatch in conditional expression \\\[-Wint-conversion\\\]" } */
+ flag ? 1 : "1"; /* { dg-warning "pointer/integer type mismatch in conditional expression \\\[-Wint-conversion\\\]" } */
+ f2 (flag); /* { dg-warning "passing argument 1 of 'f2' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ {
+ int i1 = &flag; /* { dg-warning "initialization of 'int' from 'int \\\*' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ i1 = &flag; /* { dg-warning "assignment to 'int' from 'int \\\*' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ }
+ return flag; /* { dg-warning "returning 'int' from a function with return type 'int \\\*' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+}
+
+int
+int_conversion_2 (int flag)
+{
+ void f3 (int);
+ f3 (&flag); /* { dg-warning "passing argument 1 of 'f3' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ {
+ int *i1 = flag; /* { dg-warning "initialization of 'int \\\*' from 'int' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ i1 = flag; /* { dg-warning "assignment to 'int \\\*' from 'int' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ }
+ return &flag; /* { dg-warning "returning 'int \\\*' from a function with return type 'int' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+}
+
+int *
+incompatible_pointer_types (int flag)
+{
+ void f4 (int *);
+ flag ? __builtin_abs : __builtin_labs; /* { dg-warning "pointer type mismatch in conditional expression \\\[-Wincompatible-pointer-types\\\]" } */
+ {
+ int *p1 = __builtin_abs; /* { dg-warning "initialization of 'int \\\*' from pointer to '__builtin_abs' with incompatible type 'int \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ p1 = __builtin_abs; /* { dg-warning "assignment to 'int \\\*' from pointer to '__builtin_abs' with incompatible type 'int \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ {
+ int *p2 = incompatible_pointer_types; /* { dg-warning "initialization of 'int \\\*' from incompatible pointer type 'int \\\* \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ p2 = incompatible_pointer_types; /* { dg-warning "assignment to 'int \\\*' from incompatible pointer type 'int \\\* \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ {
+ int *p3 = &p2; /* { dg-warning "initialization of 'int \\\*' from incompatible pointer type 'int \\\*\\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ p3 = &p2; /* { dg-warning "assignment to 'int \\\*' from incompatible pointer type 'int \\\*\\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ f4 (&p2); /* { dg-warning "passing argument 1 of 'f4' from incompatible pointer type \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ if (flag)
+ return __builtin_abs; /* { dg-warning "returning pointer to '__builtin_abs' of type 'int \\\(\\\*\\\)\\\(int\\\)' from a function with incompatible type 'int \\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ else
+ return incompatible_pointer_types; /* { dg-warning "returning 'int \\\* \\\(\\\*\\\)\\\(int\\\)' from a function with incompatible return type 'int \\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+}
+
+void
+return_mismatch_1 (void)
+{
+ return 0; /* { dg-warning "'return' with a value, in function returning void \\\[-Wreturn-mismatch\\\]" } */
+}
+
+int
+return_mismatch_2 (void)
+{
+ return; /* { dg-bogus "-Wreturn-mismatch" } */
+}
diff --git a/gcc/testsuite/gcc.dg/permerror-noerror.c b/gcc/testsuite/gcc.dg/permerror-noerror.c
new file mode 100644
index 00000000000..cd1c2013cb5
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/permerror-noerror.c
@@ -0,0 +1,85 @@
+/* { dg-options "-Wno-error=implicit-function-declaration -Wno-error=implicit-int -Wno-error=int-conversion -Wno-error=incompatible-pointer-types -Wno-error=return-mismatch" } */
+
+/* This test should emulate the effect of -fpermissive by adding all the
+ -Wno-error= options that are implied by -fpermissive. It needs to be
+ kept in sync with the other permerror-* tests. */
+
+void
+implicit_function_declaration (void)
+{
+ f1 (); /* { dg-warning "'f1' \\\[-Wimplicit-function-declaration\\\]" } */
+}
+
+extern implicit_int_1; /* { dg-warning "'implicit_int_1' \\\[-Wimplicit-int\\\]" } */
+typedef implicit_int_2; /* { dg-warning "'implicit_int_2' \\\[-Wimplicit-int\\\]" } */
+extern implicit_int_3 (void); /* { dg-warning "'implicit_int_3' \\\[-Wimplicit-int\\]" } */
+implicit_int_4 (i) /* { dg-warning "return type defaults to 'int' \\\[-Wimplicit-int\\\]" } */
+/* { dg-warning "type of 'i' defaults to 'int' \\\[-Wimplicit-int\\\]" "" { target *-*-*} .-1 } */
+{
+ (const) 0; /* { dg-warning "type defaults to 'int' in type name \\\[-Wimplicit-int\\\]" } */
+}
+
+extern int missing_parameter_type (i); /* { dg-warning "parameter names \\\(without types\\\) in function declaration\n" } */
+
+
+int *
+int_conversion_1 (int flag)
+{
+ void f2 (int *);
+ flag ? "1" : 1; /* { dg-warning "pointer/integer type mismatch in conditional expression \\\[-Wint-conversion\\\]" } */
+ flag ? 1 : "1"; /* { dg-warning "pointer/integer type mismatch in conditional expression \\\[-Wint-conversion\\\]" } */
+ f2 (flag); /* { dg-warning "passing argument 1 of 'f2' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ {
+ int i1 = &flag; /* { dg-warning "initialization of 'int' from 'int \\\*' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ i1 = &flag; /* { dg-warning "assignment to 'int' from 'int \\\*' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ }
+ return flag; /* { dg-warning "returning 'int' from a function with return type 'int \\\*' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+}
+
+int
+int_conversion_2 (int flag)
+{
+ void f3 (int);
+ f3 (&flag); /* { dg-warning "passing argument 1 of 'f3' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ {
+ int *i1 = flag; /* { dg-warning "initialization of 'int \\\*' from 'int' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ i1 = flag; /* { dg-warning "assignment to 'int \\\*' from 'int' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ }
+ return &flag; /* { dg-warning "returning 'int \\\*' from a function with return type 'int' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+}
+
+int *
+incompatible_pointer_types (int flag)
+{
+ void f4 (int *);
+ flag ? __builtin_abs : __builtin_labs; /* { dg-warning "pointer type mismatch in conditional expression \\\[-Wincompatible-pointer-types\\\]" } */
+ {
+ int *p1 = __builtin_abs; /* { dg-warning "initialization of 'int \\\*' from pointer to '__builtin_abs' with incompatible type 'int \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ p1 = __builtin_abs; /* { dg-warning "assignment to 'int \\\*' from pointer to '__builtin_abs' with incompatible type 'int \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ {
+ int *p2 = incompatible_pointer_types; /* { dg-warning "initialization of 'int \\\*' from incompatible pointer type 'int \\\* \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ p2 = incompatible_pointer_types; /* { dg-warning "assignment to 'int \\\*' from incompatible pointer type 'int \\\* \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ {
+ int *p3 = &p2; /* { dg-warning "initialization of 'int \\\*' from incompatible pointer type 'int \\\*\\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ p3 = &p2; /* { dg-warning "assignment to 'int \\\*' from incompatible pointer type 'int \\\*\\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ f4 (&p2); /* { dg-warning "passing argument 1 of 'f4' from incompatible pointer type \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ if (flag)
+ return __builtin_abs; /* { dg-warning "returning pointer to '__builtin_abs' of type 'int \\\(\\\*\\\)\\\(int\\\)' from a function with incompatible type 'int \\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ else
+ return incompatible_pointer_types; /* { dg-warning "returning 'int \\\* \\\(\\\*\\\)\\\(int\\\)' from a function with incompatible return type 'int \\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+}
+
+void
+return_mismatch_1 (void)
+{
+ return 0; /* { dg-warning "'return' with a value, in function returning void \\\[-Wreturn-mismatch\\\]" } */
+}
+
+int
+return_mismatch_2 (void)
+{
+ return; /* { dg-warning "return' with no value, in function returning non-void \\\[-Wreturn-mismatch\\\]" } */
+}
diff --git a/gcc/testsuite/gcc.dg/permerror-nowarning.c b/gcc/testsuite/gcc.dg/permerror-nowarning.c
new file mode 100644
index 00000000000..da6bd08245d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/permerror-nowarning.c
@@ -0,0 +1,10 @@
+/* { dg-options "-Wno-implicit-function-declaration -Wno-implicit-int -Wno-int-conversion -Wno-incompatible-pointer-types -Wno-return-mismatch" } */
+
+/* This test checks that permerrors can be disabled using -Wno-* options. */
+
+#include "permerror-default.c"
+
+/* Ideally, we do not want to see any warnings here, but this warning is not
+ yet controlled by its own option. */
+
+/* { dg-warning "parameter names \\\(without types\\\) in function declaration\n" "" { target *-*-* } 22 } */
diff --git a/gcc/testsuite/gcc.dg/permerror-pedantic.c b/gcc/testsuite/gcc.dg/permerror-pedantic.c
new file mode 100644
index 00000000000..852e7daa38d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/permerror-pedantic.c
@@ -0,0 +1,85 @@
+/* { dg-options "-pedantic-errors" } */
+
+/* Overview test for C permerrors. This test should be kept in sync with the
+ other permerror-* tests. If new permerrors are added, test cases should be
+ added to this and the other files. */
+
+void
+implicit_function_declaration (void)
+{
+ f1 (); /* { dg-error "'f1' \\\[-Wimplicit-function-declaration\\\]" } */
+}
+
+extern implicit_int_1; /* { dg-error "'implicit_int_1' \\\[-Wimplicit-int\\\]" } */
+typedef implicit_int_2; /* { dg-error "'implicit_int_2' \\\[-Wimplicit-int\\\]" } */
+extern implicit_int_3 (void); /* { dg-error "'implicit_int_3' \\\[-Wimplicit-int\\]" } */
+implicit_int_4 (i) /* { dg-error "return type defaults to 'int' \\\[-Wimplicit-int\\\]" } */
+/* { dg-error "type of 'i' defaults to 'int' \\\[-Wimplicit-int\\\]" "" { target *-*-*} .-1 } */
+{
+ (const) 0; /* { dg-error "type defaults to 'int' in type name \\\[-Wimplicit-int\\\]" } */
+}
+
+extern int missing_parameter_type (i); /* { dg-error "parameter names \\\(without types\\\) in function declaration\n" } */
+
+
+int *
+int_conversion_1 (int flag)
+{
+ void f2 (int *);
+ flag ? "1" : 1; /* { dg-error "pointer/integer type mismatch in conditional expression \\\[-Wint-conversion\\\]" } */
+ flag ? 1 : "1"; /* { dg-error "pointer/integer type mismatch in conditional expression \\\[-Wint-conversion\\\]" } */
+ f2 (flag); /* { dg-error "passing argument 1 of 'f2' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ {
+ int i1 = &flag; /* { dg-error "initialization of 'int' from 'int \\\*' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ i1 = &flag; /* { dg-error "assignment to 'int' from 'int \\\*' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ }
+ return flag; /* { dg-error "returning 'int' from a function with return type 'int \\\*' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+}
+
+int
+int_conversion_2 (int flag)
+{
+ void f3 (int);
+ f3 (&flag); /* { dg-error "passing argument 1 of 'f3' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+ {
+ int *i1 = flag; /* { dg-error "initialization of 'int \\\*' from 'int' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ i1 = flag; /* { dg-error "assignment to 'int \\\*' from 'int' makes pointer from integer without a cast \\\[-Wint-conversion\\\]" } */
+ }
+ return &flag; /* { dg-error "returning 'int \\\*' from a function with return type 'int' makes integer from pointer without a cast \\\[-Wint-conversion\\\]" } */
+}
+
+int *
+incompatible_pointer_types (int flag)
+{
+ void f4 (int *);
+ flag ? __builtin_abs : __builtin_labs; /* { dg-warning "pointer type mismatch in conditional expression \\\[-Wincompatible-pointer-types\\\]" } */
+ {
+ int *p1 = __builtin_abs; /* { dg-error "initialization of 'int \\\*' from pointer to '__builtin_abs' with incompatible type 'int \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ p1 = __builtin_abs; /* { dg-error "assignment to 'int \\\*' from pointer to '__builtin_abs' with incompatible type 'int \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ {
+ int *p2 = incompatible_pointer_types; /* { dg-error "initialization of 'int \\\*' from incompatible pointer type 'int \\\* \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ p2 = incompatible_pointer_types; /* { dg-error "assignment to 'int \\\*' from incompatible pointer type 'int \\\* \\\(\\\*\\\)\\\(int\\\)' \\\[-Wincompatible-pointer-types\\\]" } */
+ {
+ int *p3 = &p2; /* { dg-error "initialization of 'int \\\*' from incompatible pointer type 'int \\\*\\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ p3 = &p2; /* { dg-error "assignment to 'int \\\*' from incompatible pointer type 'int \\\*\\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ f4 (&p2); /* { dg-error "passing argument 1 of 'f4' from incompatible pointer type \\\[-Wincompatible-pointer-types\\\]" } */
+ }
+ if (flag)
+ return __builtin_abs; /* { dg-error "returning pointer to '__builtin_abs' of type 'int \\\(\\\*\\\)\\\(int\\\)' from a function with incompatible type 'int \\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+ else
+ return incompatible_pointer_types; /* { dg-error "returning 'int \\\* \\\(\\\*\\\)\\\(int\\\)' from a function with incompatible return type 'int \\\*' \\\[-Wincompatible-pointer-types\\\]" } */
+}
+
+void
+return_mismatch_1 (void)
+{
+ return 0; /* { dg-error "'return' with a value, in function returning void \\\[-Wreturn-mismatch\\\]" } */
+}
+
+int
+return_mismatch_2 (void)
+{
+ return; /* { dg-error "return' with no value, in function returning non-void \\\[-Wreturn-mismatch\\\]" } */
+}
diff --git a/gcc/testsuite/gcc.dg/permerror-system.c b/gcc/testsuite/gcc.dg/permerror-system.c
new file mode 100644
index 00000000000..e6a978e494d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/permerror-system.c
@@ -0,0 +1,9 @@
+/* { dg-options "-isystem ${srcdir}" } */
+
+/* Test that permerrors appear in system headers. */
+
+/* The dg-* directives in the header file are ignored. No warnings are
+ expected. */
+#include <gcc.dg/permerror-default.c>
+
+/* These errors come from permerror-default.c. No errors yet. */
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2023-12-01 7:12 [gcc r14-6031] Add tests for validating future C permerrors Florian Weimer
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