diff options
| author | manu <manu@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-05-20 20:29:55 +0000 |
|---|---|---|
| committer | manu <manu@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-05-20 20:29:55 +0000 |
| commit | e6e352cb895ddae21a403a3425c71701717b7637 (patch) | |
| tree | 90312ab1a9121fa6e7864a7b15bdaf3260ab1b8b /gcc/c.opt | |
| parent | b64b77f22174f1992747752c0d24334ea555bbcd (diff) | |
| download | gcc-e6e352cb895ddae21a403a3425c71701717b7637.tar.gz | |
2007-05-20 Manuel Lopez-Ibanez <manu@gcc.gnu.org>
PR middle-end/7651
PR c++/11856
PR c/12963
PR c/23587
PR other/29694
* c.opt (Wtype-limits): New.
* doc/invoke.texi (Wtype-limits): Document it.
(Wextra): Enabled by -Wextra.
* c-opts.c (c_common_post_options): Enabled by -Wextra.
* c-common.c (shorten_compare): Warn with Wtype-limits.
testsuite/
* gcc.dg/compare6.c: Replace Wall with Wtype-limits.
* gcc.dg/Wtype-limits.c: New.
* gcc.dg/Wtype-limits-Wextra.c: New.
* gcc.dg/Wtype-limits-no.c: New.
* g++.dg/warn/Wtype-limits.C: New.
* g++.dg/warn/Wtype-limits-Wextra.C: New.
* g++.dg/warn/Wtype-limits-no.C: New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@124875 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/c.opt')
| -rw-r--r-- | gcc/c.opt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/c.opt b/gcc/c.opt index 0ef76937947..63e2bda5b42 100644 --- a/gcc/c.opt +++ b/gcc/c.opt @@ -124,6 +124,10 @@ Wall C ObjC C++ ObjC++ Warning Enable most warning messages +Wtype-limits +C ObjC C++ ObjC++ Var(warn_type_limits) Init(-1) Warning +Warn if a comparison is always true or always false due to the limited range of the data type + Wassign-intercept ObjC ObjC++ Var(warn_assign_intercept) Warning Warn whenever an Objective-C assignment is being intercepted by the garbage collector |