http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46107
Summary: verify_loop_structure problem Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassig...@gcc.gnu.org ReportedBy: dcb...@hotmail.com Created attachment 22100 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22100 C source code I just tried to compile package gambas2-2.21.0 with the latest 4.6 snapshot 20101016 on a Fedora Linux box. The compiler said gbx_subr_math.c: In function 'SUBR_add_quick': gbx_subr_math.c:295:6: error: edge from 7 to 9 should be marked irreducible gbx_subr_math.c:295:6: internal compiler error: in verify_loop_structure, at cfgloop.c:1562 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. Source code attached. Flag -O3 required.