[Bug other/36901] New: pedwarn() + -pedantic-errors + -w (inhibit_warnings) should not emit errors

[Bug other/36901] New: pedwarn() + -pedantic-errors + -w (inhibit_warnings) should not emit errors

[manu at gcc dot gnu dot org]

>From PR35637 but this is a general issue of the diagnostic machinery.

The problem is: -pedantic no warning, -pedantic-errors gives an
error. 

Explanation: The pedantic warning is in a system header, so it doesn't get
emitted. When using -pedantic-errors, it is an error, and errors are always
emitted.

Longer explanation: The problem is in
diagnostics.c (diagnostic_report_diagnostic) which checks only for DK_WARNING
if 
they should be inhibited (either because of -w or because location is within
system headers. However, pedwarn() is passing a DK_ERROR when -pedantic-errors
is enabled. 

One possible fix is that pedwarn() always passes a DK_WARNING type, while
-pedantic-errors reclassifies -pedantic warnings to emit errors. In other
words, -pedantic-errors would behave internally like -Werror=pedantic.


-- 
           Summary: pedwarn() + -pedantic-errors + -w (inhibit_warnings)
                    should not emit errors
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: normal
          Priority: P3
         Component: other
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: manu at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36901

[Bug other/36901] pedwarn() + -pedantic-errors + -w (inhibit_warnings) should not emit errors

[manu at gcc dot gnu dot org]

------- Comment #1 from manu at gcc dot gnu dot org  2008-07-22 16:30 -------
One testcase could use #include_next in a system header and compile with just
-pedantic-errors. This should be silent but it currently emits an error.

Another testcase could be just:

static int sc = INT_MAX + 1; 

compiled with "-pedantic-errors -w". This should be silent as well, but it will
give an error.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36901

[Bug other/36901] pedwarn() + -pedantic-errors + -w (inhibit_warnings) should not emit errors

[paolo dot carlini at oracle dot com]

------- Comment #2 from paolo dot carlini at oracle dot com  2008-07-22 17:29 -------
Thanks a lot Manuel! Maybe I will even be able to come to this, thanks to your
suggestions for a fix.


-- 

paolo dot carlini at oracle dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |paolo at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36901

[Bug other/36901] pedwarn() + -pedantic-errors + -w (inhibit_warnings) should not emit errors

[manu at gcc dot gnu dot org]

------- Comment #3 from manu at gcc dot gnu dot org  2008-07-22 18:07 -------
(In reply to comment #2)
> Thanks a lot Manuel! Maybe I will even be able to come to this, thanks to your
> suggestions for a fix.
> 

I think there is a problem with my suggestion: -pedantic-errors does not only
affect -pedantic warnings but it also affects pedwarns that are not controlled
by -pedantic. -Werror=pedantic would only affect those warnings controlled by
-pedantic, so it would not be equivalent to -pedantic-errors. :( 

At the moment where diagnostic_report_diagnostic checks
diagnostic_report_warnings_p (location), the machinery does not know that this
is a pedwarn. I guess we could pass a special code DK_PEDWARN, and test for
flag_pedantic_errors within diagnostic_report_diagnostic so we can reclassify
it as DK_ERROR or DK_WARNING; or we could pass a special code DK_PEDERROR and
for that code also check diagnostic_report_warnings_p before reclassifying it
to DK_ERROR; or we could make a call to diagnostic_report_warnings_p (location)
directly in pedwarn before passing down a DK_ERROR. 

Sorry I can't be more precise. This needs more time to think that I have
available.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36901

[Bug other/36901] pedwarn() + -pedantic-errors + -w (inhibit_warnings) should not emit errors

[manu at gcc dot gnu dot org]

------- Comment #4 from manu at gcc dot gnu dot org  2008-08-08 23:58 -------
Subject: Bug 36901

Author: manu
Date: Fri Aug  8 23:57:19 2008
New Revision: 138893

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=138893
Log:
2008-08-09  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        PR 36901
        * diagnostic.def (DK_PEDWARN, DK_PERMERROR): New.  
        * diagnostic.c (pedantic_warning_kind, permissive_error_kind):
        Moved from diagnostic.h
        (diagnostic_report_diagnostic): Return bool. Handle DK_PEDWARN and
        DK_PERMERROR.
        (emit_diagnostic): New.
        (warning0, pedwarn0): Delete.
        (warning, warning_at, pedwarn, permerror): Return bool.  
        * diagnostic.h (pedantic_warning_kind, permissive_error_kind):
        Moved to diagnostic.c.
        (struct diagnostic_context): Use correct type for
        classify_diagnostic.
        (diagnostic_report_diagnostic): Update declaration.
        (emit_diagnostic): Declare.
        * errors.c (warning): Return bool.  
        * errors.h (warning): Update declaration.
        * toplev.h (warning0, pedwarn0): Delete.
        (warning, warning_at, pedwarn, permerror): Return bool.
        * c-errors.c (pedwarn_c99, pedwarn_c90): Use DK_PEDWARN.
        * c-decl.c (locate_old_decl): Delete 'diag' argument. Always use
        inform. Update all calls.
        (diagnose_mismatched_decls): Check return value of warning/pedwarn
        before giving informative note.
        (implicit_decl_warning): Likewise.  
        * c-typeck.c (build_function_call): Likewise.  
        * tree-sssa.c (warn_uninit): Likewise.  
        * builtins.c (gimplify_va_arg_expr): Likewise.
fortran/
        * f95-lang.c (gfc_mark_addressable): Use "pedwarn (0," instead of
        'pedwarn0'.
cp/
        * cp-tree.h (struct diagnostic_context, struct diagnostic_info):
        Delete forward declarations. Check that toplev.h has not been
        included before this file. Include toplev.h and diagnostic.h.
        * error.c (cp_cpp_error): Use DK_PEDWARN.
        (cxx_incomplete_type_diagnostic): Update declaration.
        (cxx_incomplete_type_error): Use DK_ERROR.
        * typeck2.c (cxx_incomplete_type_diagnostic): Take a diagnostic_t
        as argument. Use emit_diagnostic.
        (cxx_incomplete_type_error): Use DK_ERROR.
        (add_exception_specifier): Use diagnostic_t instead of custom
        codes.  
        * typeck.c (complete_type_or_else): Update call to
        cxx_incomplete_type_diagnostic.
        * init.c (build_delete): Likewise.  
        * call.c (diagnostic_fn_t): Remove unused typedef.
        (build_temp): Pass a pointer to diagnostic_t.
        (convert_like_real): Use emit_diagnostic.
        (joust): Check return value of warning before giving informative
        note.  
        * friend.c (do_friend): Check return value of warning
        before giving informative note.
        * parser.c (cp_parser_template_id): Likewise.

testsuite/
        * gcc.dg/pr36901-1.c: New.
        * gcc.dg/pr36901-3.c: New.
        * gcc.dg/pr36901-2.c: New.
        * gcc.dg/pr36901-4.c: New.
        * gcc.dg/pr36901-system.h: New.
        * gcc.dg/pr36901.h: New.
        * gcc.target/powerpc/altivec-macros.c: Update.
        * gcc.target/i386/regparm.c: Update.
        * gcc.dg/funcdef-var-1.c: Update.
        * gcc.dg/parm-mismatch-1.c: Update.
        * gcc.dg/attr-noinline.c: Update.
        * gcc.dg/wtr-static-1.c: Update.
        * gcc.dg/redecl-11.c: Update.
        * gcc.dg/pr27953.c: Update.
        * gcc.dg/proto-1.c: Update.
        * gcc.dg/decl-3.c: Update.
        * gcc.dg/redecl-13.c: Update.
        * gcc.dg/pr15360-1.c: Update.
        * gcc.dg/redecl-15.c: Update.
        * gcc.dg/enum-compat-1.c: Update.
        * gcc.dg/dll-3.c: Update.
        * gcc.dg/array-5.c: Update.
        * gcc.dg/Wredundant-decls-2.c: Update.
        * gcc.dg/inline4.c: Update.
        * gcc.dg/redecl-2.c: Update.
        * gcc.dg/inline-14.c: Update.
        * gcc.dg/tls/diag-3.c: Update.
        * gcc.dg/funcdef-var-2.c: Update.
        * gcc.dg/20041213-1.c: Update.
        * gcc.dg/old-style-then-proto-1.c: Update.
        * gcc.dg/decl-2.c: Update.
        * gcc.dg/redecl-12.c: Update.
        * gcc.dg/decl-4.c: Update.
        * gcc.dg/Wshadow-1.c: Update.
        * gcc.dg/transparent-union-2.c: Update.
        * gcc.dg/visibility-7.c: Update.
        * gcc.dg/dll-2.c: Update.
        * gcc.dg/redecl-16.c: Update.
        * gcc.dg/inline1.c: Update.
        * gcc.dg/decl-8.c: Update.
        * gcc.dg/nested-redef-1.c: Update.
        * gcc.dg/inline3.c: Update.
        * gcc.dg/redecl-1.c: Update.
        * gcc.dg/inline5.c: Update.
        * gcc.dg/pr35899.c: Update.
        * gcc.dg/noncompile/label-lineno-1.c: Update.
        * gcc.dg/noncompile/label-1.c: Update.
        * gcc.dg/noncompile/20020220-1.c: Update.
        * gcc.dg/noncompile/redecl-1.c: Update.
        * gcc.dg/redecl-5.c: Update.
        * gcc.dg/qual-return-3.c: Update.
        * gcc.dg/label-decl-4.c: Update.

Added:
    trunk/gcc/testsuite/gcc.dg/pr36901-1.c
    trunk/gcc/testsuite/gcc.dg/pr36901-2.c
    trunk/gcc/testsuite/gcc.dg/pr36901-3.c
    trunk/gcc/testsuite/gcc.dg/pr36901-4.c
    trunk/gcc/testsuite/gcc.dg/pr36901-system.h
    trunk/gcc/testsuite/gcc.dg/pr36901.h
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/builtins.c
    trunk/gcc/c-decl.c
    trunk/gcc/c-errors.c
    trunk/gcc/c-typeck.c
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/call.c
    trunk/gcc/cp/cp-tree.h
    trunk/gcc/cp/error.c
    trunk/gcc/cp/friend.c
    trunk/gcc/cp/init.c
    trunk/gcc/cp/parser.c
    trunk/gcc/cp/typeck.c
    trunk/gcc/cp/typeck2.c
    trunk/gcc/diagnostic.c
    trunk/gcc/diagnostic.def
    trunk/gcc/diagnostic.h
    trunk/gcc/errors.c
    trunk/gcc/errors.h
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/f95-lang.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/20041213-1.c
    trunk/gcc/testsuite/gcc.dg/Wredundant-decls-2.c
    trunk/gcc/testsuite/gcc.dg/Wshadow-1.c
    trunk/gcc/testsuite/gcc.dg/array-5.c
    trunk/gcc/testsuite/gcc.dg/attr-noinline.c
    trunk/gcc/testsuite/gcc.dg/decl-2.c
    trunk/gcc/testsuite/gcc.dg/decl-3.c
    trunk/gcc/testsuite/gcc.dg/decl-4.c
    trunk/gcc/testsuite/gcc.dg/decl-8.c
    trunk/gcc/testsuite/gcc.dg/dll-2.c
    trunk/gcc/testsuite/gcc.dg/dll-3.c
    trunk/gcc/testsuite/gcc.dg/enum-compat-1.c
    trunk/gcc/testsuite/gcc.dg/funcdef-var-1.c
    trunk/gcc/testsuite/gcc.dg/funcdef-var-2.c
    trunk/gcc/testsuite/gcc.dg/inline-14.c
    trunk/gcc/testsuite/gcc.dg/inline1.c
    trunk/gcc/testsuite/gcc.dg/inline3.c
    trunk/gcc/testsuite/gcc.dg/inline4.c
    trunk/gcc/testsuite/gcc.dg/inline5.c
    trunk/gcc/testsuite/gcc.dg/label-decl-4.c
    trunk/gcc/testsuite/gcc.dg/nested-redef-1.c
    trunk/gcc/testsuite/gcc.dg/noncompile/20020220-1.c
    trunk/gcc/testsuite/gcc.dg/noncompile/label-1.c
    trunk/gcc/testsuite/gcc.dg/noncompile/label-lineno-1.c
    trunk/gcc/testsuite/gcc.dg/noncompile/redecl-1.c
    trunk/gcc/testsuite/gcc.dg/old-style-then-proto-1.c
    trunk/gcc/testsuite/gcc.dg/parm-mismatch-1.c
    trunk/gcc/testsuite/gcc.dg/pr15360-1.c
    trunk/gcc/testsuite/gcc.dg/pr27953.c
    trunk/gcc/testsuite/gcc.dg/pr35899.c
    trunk/gcc/testsuite/gcc.dg/proto-1.c
    trunk/gcc/testsuite/gcc.dg/qual-return-3.c
    trunk/gcc/testsuite/gcc.dg/redecl-1.c
    trunk/gcc/testsuite/gcc.dg/redecl-11.c
    trunk/gcc/testsuite/gcc.dg/redecl-12.c
    trunk/gcc/testsuite/gcc.dg/redecl-13.c
    trunk/gcc/testsuite/gcc.dg/redecl-15.c
    trunk/gcc/testsuite/gcc.dg/redecl-16.c
    trunk/gcc/testsuite/gcc.dg/redecl-2.c
    trunk/gcc/testsuite/gcc.dg/redecl-5.c
    trunk/gcc/testsuite/gcc.dg/tls/diag-3.c
    trunk/gcc/testsuite/gcc.dg/transparent-union-2.c
    trunk/gcc/testsuite/gcc.dg/visibility-7.c
    trunk/gcc/testsuite/gcc.dg/wtr-static-1.c
    trunk/gcc/testsuite/gcc.target/i386/regparm.c
    trunk/gcc/testsuite/gcc.target/powerpc/altivec-macros.c
    trunk/gcc/toplev.h
    trunk/gcc/tree-ssa.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36901

[Bug other/36901] pedwarn() + -pedantic-errors + -w (inhibit_warnings) should not emit errors

[manu at gcc dot gnu dot org]

------- Comment #5 from manu at gcc dot gnu dot org  2008-08-08 23:59 -------
Fixed in GCC 4.4


-- 

manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36901

[Bug other/36901] pedwarn() + -pedantic-errors + -w (inhibit_warnings) should not emit errors

[eric dot weddington at atmel dot com]

------- Comment #7 from eric dot weddington at atmel dot com  2008-08-09 17:16 -------
*** Bug 37069 has been marked as a duplicate of this bug. ***


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36901

[Bug other/36901] pedwarn() + -pedantic-errors + -w (inhibit_warnings) should not emit errors

[eric dot weddington at atmel dot com]

------- Comment #6 from eric dot weddington at atmel dot com  2008-08-09 17:15 -------
Your fix causes a regression on the AVR:

FAIL: gcc.dg/pr36901-4.c #include_next (test for errors, line )

Success with trunk revision 138883
Failed with trunk revision 138904


-- 

eric dot weddington at atmel dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |eric dot weddington at atmel
                   |                            |dot com
             Status|RESOLVED                    |UNCONFIRMED
         Resolution|FIXED                       |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36901

[Bug other/36901] pedwarn() + -pedantic-errors + -w (inhibit_warnings) should not emit errors

[manu at gcc dot gnu dot org]

------- Comment #8 from manu at gcc dot gnu dot org  2008-08-09 17:30 -------
I don't have AVR so I cannot know what exactly is going on or test a fix.
However, I guess that the limits.h used by AVR do not use #include_next. So you
could try by adding #include_next in pr36901-system.h, that is:

- #include "pr36901.h"
+ #include_next "pr36901.h"

Could you test that?


-- 

manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |manu at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36901

[Bug other/36901] pedwarn() + -pedantic-errors + -w (inhibit_warnings) should not emit errors

[eric dot weddington at atmel dot com]

------- Comment #9 from eric dot weddington at atmel dot com  2008-08-09 19:34 -------
You're right in that limits.h for the AVR does not use #include_next. The
limits.h that the AVR toolchain uses is installed by gcc.

Unfortunately your suggestion makes the situation worse. There are now 4
failures instead of one:
FAIL: gcc.dg/pr36901-1.c (test for excess errors)
FAIL: gcc.dg/pr36901-4.c overflow (test for warnings, line )
FAIL: gcc.dg/pr36901-4.c overflow (test for errors, line )
FAIL: gcc.dg/pr36901-4.c (test for excess errors)


Here are the details from the log:
Executing on host: /usr/local/avrdev/gcc/build/gcc/xgcc
-B/usr/local/avrdev/gcc/build/gcc/
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-1.c   -pedantic-errors
-DSTACK_SIZE=2048 -DNO_TRAMPOLINES -fno-show-column -S  -DSIGNAL_SUPPRESS
-mmcu=atmega128   -o pr36901-1.s    (timeout = 300)
In file included from
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-1.c:3:
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-system.h:2: error:
pr36901.h: No such file or directory
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-1.c: In function 'foo':
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-1.c:6: error: 'sc'
undeclared (first use in this function)
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-1.c:6: error: (Each
undeclared identifier is reported only once
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-1.c:6: error: for each
function it appears in.)
compiler exited with status 1
output is:
In file included from
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-1.c:3:
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-system.h:2: error:
pr36901.h: No such file or directory
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-1.c: In function 'foo':
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-1.c:6: error: 'sc'
undeclared (first use in this function)
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-1.c:6: error: (Each
undeclared identifier is reported only once
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-1.c:6: error: for each
function it appears in.)

FAIL: gcc.dg/pr36901-1.c (test for excess errors)
Excess errors:
In file included from
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-1.c:3:
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-system.h:2: error:
pr36901.h: No such file or directory
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-1.c:6: error: 'sc'
undeclared (first use in this function)
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-1.c:6: error: (Each
undeclared identifier is reported only once
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-1.c:6: error: for each
function it appears in.)

Executing on host: /usr/local/avrdev/gcc/build/gcc/xgcc
-B/usr/local/avrdev/gcc/build/gcc/
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-2.c   -pedantic-errors
-w -DSTACK_SIZE=2048 -DNO_TRAMPOLINES -fno-show-column -S  -DSIGNAL_SUPPRESS
-mmcu=atmega128   -o pr36901-2.s    (timeout = 300)
PASS: gcc.dg/pr36901-2.c (test for excess errors)
Executing on host: /usr/local/avrdev/gcc/build/gcc/xgcc
-B/usr/local/avrdev/gcc/build/gcc/
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-3.c   -pedantic-errors
-DSTACK_SIZE=2048 -DNO_TRAMPOLINES -fno-show-column -S  -DSIGNAL_SUPPRESS
-mmcu=atmega128   -o pr36901-3.s    (timeout = 300)
In file included from
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-3.c:3:
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901.h:2: warning: integer
overflow in expression
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901.h:2: error: overflow in
constant expression
compiler exited with status 1
output is:
In file included from
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-3.c:3:
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901.h:2: warning: integer
overflow in expression
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901.h:2: error: overflow in
constant expression

PASS: gcc.dg/pr36901-3.c In file included (test for warnings, line )
PASS: gcc.dg/pr36901-3.c overflow (test for warnings, line )
PASS: gcc.dg/pr36901-3.c overflow (test for errors, line )
PASS: gcc.dg/pr36901-3.c (test for excess errors)
Executing on host: /usr/local/avrdev/gcc/build/gcc/xgcc
-B/usr/local/avrdev/gcc/build/gcc/
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-4.c   -pedantic-errors
-Wsystem-headers -DSTACK_SIZE=2048 -DNO_TRAMPOLINES -fno-show-column -S 
-DSIGNAL_SUPPRESS -mmcu=atmega128   -o pr36901-4.s    (timeout = 300)
In file included from
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-4.c:3:
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-system.h:2: error:
#include_next is a GCC extension
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-system.h:2: error:
pr36901.h: No such file or directory
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-4.c: In function 'foo':
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-4.c:6: error: 'sc'
undeclared (first use in this function)
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-4.c:6: error: (Each
undeclared identifier is reported only once
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-4.c:6: error: for each
function it appears in.)
compiler exited with status 1
output is:
In file included from
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-4.c:3:
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-system.h:2: error:
#include_next is a GCC extension
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-system.h:2: error:
pr36901.h: No such file or directory
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-4.c: In function 'foo':
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-4.c:6: error: 'sc'
undeclared (first use in this function)
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-4.c:6: error: (Each
undeclared identifier is reported only once
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-4.c:6: error: for each
function it appears in.)

PASS: gcc.dg/pr36901-4.c In file included (test for warnings, line )
FAIL: gcc.dg/pr36901-4.c overflow (test for warnings, line )
FAIL: gcc.dg/pr36901-4.c overflow (test for errors, line )
PASS: gcc.dg/pr36901-4.c #include_next (test for errors, line )
FAIL: gcc.dg/pr36901-4.c (test for excess errors)
Excess errors:
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-system.h:2: error:
pr36901.h: No such file or directory
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-4.c:6: error: 'sc'
undeclared (first use in this function)
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-4.c:6: error: (Each
undeclared identifier is reported only once
/usr/local/avrdev/gcc/gcc/gcc/testsuite/gcc.dg/pr36901-4.c:6: error: for each
function it appears in.)


-- 

eric dot weddington at atmel dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2008-08-09 19:34:42
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36901

[Bug other/36901] pedwarn() + -pedantic-errors + -w (inhibit_warnings) should not emit errors

[manu at gcc dot gnu dot org]

------- Comment #10 from manu at gcc dot gnu dot org  2008-08-09 20:38 -------
Yeah, silly me, it obviously fails because there is no "next" pr36901.h to
include.

Since we include limits.h, we are at the mercy of the contents of the limits.h
that is found. This isn't very reliable. We just need to a pedantic warning in
the header. This works in x86_64, could you test on your side?


Index: gcc/testsuite/gcc.dg/pr36901-3.c
===================================================================
--- gcc/testsuite/gcc.dg/pr36901-3.c    (revision 138906)
+++ gcc/testsuite/gcc.dg/pr36901-3.c    (working copy)
@@ -4,7 +4,6 @@
 void foo(void)
 {
   int s = sc;
 }
 /* { dg-message "file included" "In file included" { target *-*-* } 0 } */
-/* { dg-warning "overflow" "overflow" { target *-*-* } 0 } */
-/* { dg-error "overflow" "overflow" { target *-*-* } 0 } */
+/* { dg-error "ordered comparison of pointer with integer zero" "pedantic
error" { target *-*-* } 0 } */
Index: gcc/testsuite/gcc.dg/pr36901-4.c
===================================================================
--- gcc/testsuite/gcc.dg/pr36901-4.c    (revision 138906)
+++ gcc/testsuite/gcc.dg/pr36901-4.c    (working copy)
@@ -4,8 +4,6 @@
 void foo(void)
 {
   int s = sc;
 }
 /* { dg-message "from " "In file included" { target *-*-* } 0 } */
-/* { dg-warning "overflow" "overflow" { target *-*-* } 0 } */
-/* { dg-error "overflow" "overflow" { target *-*-* } 0 } */
-/* { dg-error "#include_next is a GCC extension" "#include_next" { target
*-*-* } 0 } */
+/* { dg-error "ordered comparison of pointer with integer zero" "pedantic
error" { target *-*-* } 0 } */
Index: gcc/testsuite/gcc.dg/pr36901.h
===================================================================
--- gcc/testsuite/gcc.dg/pr36901.h      (revision 138906)
+++ gcc/testsuite/gcc.dg/pr36901.h      (working copy)
@@ -1,2 +1,2 @@
-#include <limits.h>
-static int sc = INT_MAX + 1;
+int sc = (&sc > 0);
+


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36901

[Bug other/36901] pedwarn() + -pedantic-errors + -w (inhibit_warnings) should not emit errors

[eric dot weddington at atmel dot com]

------- Comment #11 from eric dot weddington at atmel dot com  2008-08-10 03:13 -------
(In reply to comment #10)

> Since we include limits.h, we are at the mercy of the contents of the limits.h
> that is found. This isn't very reliable. We just need to a pedantic warning in
> the header. This works in x86_64, could you test on your side?

Yes, this patch causes all of the tests to pass for the AVR.

Thanks for working to find a solution for the AVR target.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36901

[Bug other/36901] pedwarn() + -pedantic-errors + -w (inhibit_warnings) should not emit errors

[manu at gcc dot gnu dot org]

------- Comment #12 from manu at gcc dot gnu dot org  2008-08-10 14:48 -------
Closing again.


-- 

manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36901

[Bug other/36901] pedwarn() + -pedantic-errors + -w (inhibit_warnings) should not emit errors

[eric dot weddington at atmel dot com]

------- Comment #13 from eric dot weddington at atmel dot com  2008-08-10 16:50 -------
Manuel,
Note that I have *not committed* your patch to fix this. I don't have
assignment papers done yet, nor do I have commit privs. You'll need to commit
this to fix the problem.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36901

[Bug other/36901] pedwarn() + -pedantic-errors + -w (inhibit_warnings) should not emit errors

[manu at gcc dot gnu dot org]

------- Comment #14 from manu at gcc dot gnu dot org  2008-08-10 18:34 -------
Subject: Bug 36901

Author: manu
Date: Sun Aug 10 18:32:52 2008
New Revision: 138932

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=138932
Log:
2008-08-10  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

        PR 36901
testsuite/
        * gcc.dg/pr36901.h: Do not depend on limits.h.
        * gcc.dg/pr36901-3.c: Update.
        * gcc.dg/pr36901-4.c: Update.

Modified:
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/pr36901-3.c
    trunk/gcc/testsuite/gcc.dg/pr36901-4.c
    trunk/gcc/testsuite/gcc.dg/pr36901.h


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36901