[Bug 1090085] New: GCC 8: apr is miscompiled

http://bugzilla.opensuse.org/show_bug.cgi?id=1090085 Bug ID: 1090085 Summary: GCC 8: apr is miscompiled Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Basesystem Assignee: bnc-team-screening@forge.provo.novell.com Reporter: martin.liska@suse.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- Reduced from the package: $ cat chunk.i int c; int main() { for (long int off = 1; off < 0x7fffffffffffffffL && off > 0; off *= 2) { c++; } return 0; } Which ends as infinite loop. Started with: SVN revision: 251141 Author: rguenth 2017-08-17 Richard Biener * tree-vrp.c (vrp_int_const_binop): Do not set *overflow_p to true when overflow is undefined and we saturated the result. * gcc.dg/tree-ssa/vrp117.c: New testcase. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@251141 138bc75d-0d04-0410-961f-82ee72b054a4 UBSAN detects that: $ gcc -O2 chunk.i -fsanitize=undefined && ./a.out chunk.i:5:68: runtime error: signed integer overflow: 4611686018427387904 * 2 cannot be represented in type 'long int' Richi can you please confirm it's expected handling of the ubsan? -- You are receiving this mail because: You are on the CC list for the bug.