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[Bug c/32102] -Wall stomps on -Wstrict-overflow



------- Comment #5 from manu at gcc dot gnu dot org  2008-01-18 19:02 -------
(In reply to comment #4)
> I think then -Wall shouldn't enable -Wstrict-overflow at all. Because current
> situation is counter intuitive.
> 

This a bug. A quick fix is:

Index: gcc/c-opts.c
===================================================================
--- gcc/c-opts.c        (revision 131530)
+++ gcc/c-opts.c        (working copy)
@@ -403,7 +403,8 @@
       warn_switch = value;
       set_Wstrict_aliasing (value);
       warn_address = value;
-      warn_strict_overflow = value;
+      if (warn_strict_overflow < 2)
+        warn_strict_overflow = value;
       warn_array_bounds = value;

       /* Only warn about unknown pragmas that are not in system

As you can see above, the same happens for other options, e.g.,
-Wstrict-aliasing=2 -Wall.

My proposal to fix this is here: 
http://gcc.gnu.org/ml/gcc/2007-05/msg00719.html
http://gcc.gnu.org/ml/gcc/2007-05/msg00724.html


-- 

manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2008-01-18 19:02:48
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32102


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