[Bug middle-end/38999] [4.4/4.5/4.6/4.7 Regression] Extra overflow warning in 32-bit HWI compiler

["rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38999

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |WAITING
      Known to fail|                            |

--- Comment #7 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-16 13:22:28 UTC ---
Since 4.7 we have need_64bit_hwint=yes for the target the bug was reported
against.

But I'm confused.  Do we want two warnings here?

3.3.6 and 3.4.6 say:

/space/rguenther/install/gcc-3.3.6/bin/gcc -S -std=c99 t.c
t.c:10:13: warning: integer constant is so large that it is unsigned
t.c: In function `f':
t.c:10: warning: integer overflow in expression

while since 4.0.0 we say

t.c:10:13: warning: integer constant is so large that it is unsigned

I don't think we anywhere have a 'integer overflow in expression' warning
(not by default at least) that triggers during optimization.

So - is 4.7 fixed (because hwint 64 is default)?  I didn't really check
hwint32 builds of 4.x.