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* [gcc r14-2167] c++: fix error reporting routines re-entered ICE [PR110175]
@ 2023-06-28 15:52 Marek Polacek
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From: Marek Polacek @ 2023-06-28 15:52 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:4de22e25918f6fe40184c444ba6d81b19b806e26
commit r14-2167-g4de22e25918f6fe40184c444ba6d81b19b806e26
Author: Marek Polacek <polacek@redhat.com>
Date: Thu Jun 8 14:07:44 2023 -0400
c++: fix error reporting routines re-entered ICE [PR110175]
Here we get the "error reporting routines re-entered" ICE because
of an unguarded use of warning_at. While at it, I added a check
for a warning_at just above it.
PR c++/110175
gcc/cp/ChangeLog:
* typeck.cc (cp_build_unary_op): Check tf_warning before warning.
gcc/testsuite/ChangeLog:
* g++.dg/cpp0x/decltype-110175.C: New test.
Diff:
---
gcc/cp/typeck.cc | 5 +++--
gcc/testsuite/g++.dg/cpp0x/decltype-110175.C | 6 ++++++
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/gcc/cp/typeck.cc b/gcc/cp/typeck.cc
index da591dafc8f..859b133a18d 100644
--- a/gcc/cp/typeck.cc
+++ b/gcc/cp/typeck.cc
@@ -7561,7 +7561,8 @@ cp_build_unary_op (enum tree_code code, tree xarg, bool noconvert,
/* [depr.volatile.type] "Postfix ++ and -- expressions and
prefix ++ and -- expressions of volatile-qualified arithmetic
and pointer types are deprecated." */
- if (TREE_THIS_VOLATILE (arg) || CP_TYPE_VOLATILE_P (TREE_TYPE (arg)))
+ if ((TREE_THIS_VOLATILE (arg) || CP_TYPE_VOLATILE_P (TREE_TYPE (arg)))
+ && (complain & tf_warning))
warning_at (location, OPT_Wvolatile,
"%qs expression of %<volatile%>-qualified type is "
"deprecated",
@@ -7592,7 +7593,7 @@ cp_build_unary_op (enum tree_code code, tree xarg, bool noconvert,
return error_mark_node;
}
/* Otherwise, [depr.incr.bool] says this is deprecated. */
- else
+ else if (complain & tf_warning)
warning_at (location, OPT_Wdeprecated,
"use of an operand of type %qT "
"in %<operator++%> is deprecated",
diff --git a/gcc/testsuite/g++.dg/cpp0x/decltype-110175.C b/gcc/testsuite/g++.dg/cpp0x/decltype-110175.C
new file mode 100644
index 00000000000..39643cafcf8
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/decltype-110175.C
@@ -0,0 +1,6 @@
+// PR c++/110175
+// { dg-do compile { target c++11 } }
+
+template<class T> auto f(T t) -> decltype(++t) { return t; } // { dg-warning "reference" "" { target c++14_down } }
+void f(...) {}
+void g() { f(true); }
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