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re PR c/68833 (-Werror=format issues an error now) 

PR c/68833
	* common.opt (Wmissing-noreturn): Add Warning option.
	* opts-common.c (control_warning_option): If opt is
	alias_target with alias_arg, set arg to it.

	* c.opt (Wmissing-format-attribute, Wnormalized): Add Warning option.

	* c-c++-common/pr68833-1.c: New test.
	* c-c++-common/pr68833-2.c: New test.

From-SVN: r231624
This commit is contained in:
Jakub Jelinek 2015-12-14 17:59:05 +01:00 committed by Jakub Jelinek
parent d84ffc0a56
commit 54d62f5148
9 changed files with 73 additions and 4 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2015-12-14 Jakub Jelinek <jakub@redhat.com>
PR c/68833
* common.opt (Wmissing-noreturn): Add Warning option.
* opts-common.c (control_warning_option): If opt is
alias_target with alias_arg, set arg to it.
2015-12-14 Segher Boessenkool <segher@kernel.crashing.org>
PR target/68865

5
gcc/c-family/ChangeLog
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@ -1,3 +1,8 @@
2015-12-14 Jakub Jelinek <jakub@redhat.com>
PR c/68833
* c.opt (Wmissing-format-attribute, Wnormalized): Add Warning option.
2014-12-12 Tobias Burnus <burnus@net-b.de>
PR fortran/68815

4
gcc/c-family/c.opt
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@ -627,7 +627,7 @@ C++ ObjC++ Var(warn_templates) Warning
Warn on primary template declaration.
Wmissing-format-attribute
C ObjC C++ ObjC++ Alias(Wsuggest-attribute=format)
C ObjC C++ ObjC++ Warning Alias(Wsuggest-attribute=format)
;
Wmissing-include-dirs
@ -678,7 +678,7 @@ C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wall)
;
Wnormalized
C ObjC C++ ObjC++ Alias(Wnormalized=,nfc,none)
C ObjC C++ ObjC++ Warning Alias(Wnormalized=,nfc,none)
;
Wnormalized=

2
gcc/common.opt
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@ -612,7 +612,7 @@ Common Var(warn_unsafe_loop_optimizations) Warning
Warn if the loop cannot be optimized due to nontrivial assumptions.
Wmissing-noreturn
Common Alias(Wsuggest-attribute=noreturn)
Common Warning Alias(Wsuggest-attribute=noreturn)
Wodr
Common Var(warn_odr_violations) Init(1) Warning

8
gcc/opts-common.c
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@ -1361,7 +1361,13 @@ control_warning_option (unsigned int opt_index, int kind, const char *arg,
diagnostic_context *dc)
{
if (cl_options[opt_index].alias_target != N_OPTS)
opt_index = cl_options[opt_index].alias_target;
{
gcc_assert (!cl_options[opt_index].cl_separate_alias
&& !cl_options[opt_index].cl_negative_alias);
if (cl_options[opt_index].alias_arg)
arg = cl_options[opt_index].alias_arg;
opt_index = cl_options[opt_index].alias_target;
}
if (opt_index == OPT_SPECIAL_ignore)
return;
if (dc)

6
gcc/testsuite/ChangeLog
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@ -1,3 +1,9 @@
2015-12-14 Jakub Jelinek <jakub@redhat.com>
PR c/68833
* c-c++-common/pr68833-1.c: New test.
* c-c++-common/pr68833-2.c: New test.
2015-12-14 Richard Biener <rguenther@suse.de>
PR tree-optimization/68852

22
gcc/testsuite/c-c++-common/pr68833-1.c Normal file
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@ -0,0 +1,22 @@
/* PR c/68833 */
/* { dg-do compile } */
/* { dg-options "-Werror=larger-than-65536 -Werror=format -Werror=missing-noreturn" } */
int a[131072]; /* { dg-error "size of 'a' is \[1-9]\[0-9]* bytes" } */
int b[1024]; /* { dg-bogus "size of 'b' is \[1-9]\[0-9]* bytes" } */
void
f1 (const char *fmt)
{
__builtin_printf ("%d\n", 1.2); /* { dg-error "expects argument of type" } */
__builtin_printf (fmt, 1.2); /* { dg-bogus "format not a string literal, argument types not checked" } */
}
extern void f2 (void);
void
f2 (void) /* { dg-error "candidate for attribute 'noreturn'" "detect noreturn candidate" } */
{
__builtin_exit (0);
}
/* { dg-prune-output "treated as errors" } */

16
gcc/testsuite/c-c++-common/pr68833-2.c Normal file
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@ -0,0 +1,16 @@
/* PR c/68833 */
/* { dg-do compile } */
/* { dg-options "-Werror=missing-format-attribute" } */
#include <stdarg.h>
void
foo (const char *fmt, ...)
{
va_list ap;
va_start (ap, fmt);
__builtin_vprintf (fmt, ap); /* { dg-error "candidate" "printf attribute warning" } */
va_end (ap);
}
/* { dg-prune-output "treated as errors" } */

7
gcc/testsuite/c-c++-common/pr68833-3.c Normal file
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@ -0,0 +1,7 @@
/* PR c/68833 */
/* { dg-do preprocess } */
/* { dg-options "-Werror=normalized" } */
\u0F43 // { dg-error "`.U00000f43' is not in NFC .-Werror=normalized=." }
/* { dg-prune-output "treated as errors" } */