[Bug middle-end/42099] New: Error in 64-bit division for 32-bit target

[ian at airs dot com]

I compiled this test case in a i686-pc-linux-gnu gcc configured with
--with-arch=pentium4:

long long foo(long long v) { return v / -0x080000000LL; }
void main() { if (foo(0x080000000LL) != -1) abort(); exit (0); }

The value of 0x80000000LL / -0x80000000LL is -1.  However, gcc computes it as
0, and the test fails.  It fails at -O0 but succeeds if the division is
inlined.


-- 
           Summary: Error in 64-bit division for 32-bit target
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ian at airs dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42099