Matijs van Zuijlen writes: > Package: gcc-3.3 > Version: 1:3.3.3-0pre2 > Severity: normal > > When complied with -O -funroll-loops on powerpc, the attached test.i > produces the following output: > > Bytes in main: 0 1 > Bytes in: 0 1 0 1 0 1 ( 0 10 15 254) > x = 282 > Bytes in: 0 1 0 1 0 1 ( 94 52 15 254) > x = 418 > Bytes in: 0 1 0 1 0 1 ( 7 208 15 254) > x = 487 > > The reported x's should be the sum of the first six numbers on the line > above. Instead, it is the sum of _all_ the numbers on the line above. > Changing -O to -O2, or removing -funroll-loops generates the following > (correct) result: > > Bytes in main: 0 1 > Bytes in: 0 1 0 1 0 1 ( 70 148 15 234) > x = 3 > Bytes in: 0 1 0 1 0 1 ( 0 10 15 254) > x = 3 > Bytes in: 0 1 0 1 0 1 ( 7 76 15 234) > x = 3 > > On 386, this problem does not occur. > > Note that this could be the same bug as PR13222, in which case this would > be a nice, small, test case. I have not actually looked at the test case > in PR13222 however, since it is rather large.
please could you recheck with other compiler versions, i.e. gcc-snapshot (if it's fixed upstream), gcc-3.2, gcc-2.95 (to check if the bug is a regression) Thanks, Matthias
