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| author | Roger Sayle <roger@eyesopen.com> | 2006-05-01 04:27:15 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2006-05-01 04:27:15 +0000 |
| commit | 71834ad346a514c1ef41342403b762503e5ce05e (patch) | |
| tree | e7d7d2ba340760ae4cb7b524b8aab06e994b8769 /gcc/common.opt | |
| parent | 1c56bc4a7ea665c876311f1df1658aa19107f93f (diff) | |
| download | gcc-71834ad346a514c1ef41342403b762503e5ce05e.zip gcc-71834ad346a514c1ef41342403b762503e5ce05e.tar.gz gcc-71834ad346a514c1ef41342403b762503e5ce05e.tar.bz2 | |
common.opt (Woverflow): New command line option.
* common.opt (Woverflow): New command line option.
* c-common.c (constant_expression_warning): Check warn_overflow.
(overflow_waring): Pass OPT_Woverflow to warning.
(unsigned_conversion_warning): Likewise.
(convert_and_check): Likewise.
* doc/invoke.texi: Document new command line option.
* gcc.dg/Woverflow-1.c: New test case.
* gcc.dg/Woverflow-2.c: Likewise.
* gcc.dg/Woverflow-3.c: Likewise.
From-SVN: r113408
Diffstat (limited to 'gcc/common.opt')
| -rw-r--r-- | gcc/common.opt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/common.opt b/gcc/common.opt index f14a1cf..53836f3 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -109,6 +109,10 @@ Wmissing-noreturn Common Var(warn_missing_noreturn) Warn about functions which might be candidates for __attribute__((noreturn)) +Woverflow +Common Var(warn_overflow) Init(1) +Warn about overflow in arithmetic expressions + Wpacked Common Var(warn_packed) Warn when the packed attribute has no effect on struct layout |