http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59098
Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |manu at gcc dot gnu.org
--- Comment #1 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
Possibly related to bug 38341.
Note also that this simple change:
Index: c-common.c
===================================================================
--- c-common.c (revision 204219)
+++ c-common.c (working copy)
@@ -11236,11 +11236,11 @@ warn_for_sign_compare (location_t locati
{
mask = (~ (HOST_WIDE_INT) 0) << bits;
if ((mask & constant) != mask)
{
if (constant == 0)
- warning (OPT_Wsign_compare,
+ warning_at (location, OPT_Wsign_compare,
"promoted ~unsigned is always non-zero");
else
warning_at (location, OPT_Wsign_compare,
"comparison of promoted ~unsigned with
constant");
}
improves the caret information from:
small.c:6:3: warning: promoted ~unsigned is always non-zero [-Wsign-compare]
return (val ^ (small_type_t)0xfffffffful) == 0;
^
to:
small.c:6:45: warning: promoted ~unsigned is always non-zero [-Wsign-compare]
return (val ^ (small_type_t)0xfffffffful) != 0;
^
