http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46183
Summary: [4.6 Regression] ICE: in calc_dfs_tree, at dominance.c:396 with -O -fno-dse -fgcse -ftree-pre Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassig...@gcc.gnu.org ReportedBy: zso...@seznam.cz Created attachment 22159 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22159 reduced testcase Compiler output: $ gcc -O -fno-dse -fgcse -ftree-pre pr46183.c pr46183.c: In function 'foo': pr46183.c:16:1: internal compiler error: in calc_dfs_tree, at dominance.c:396 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. Tested revisions: r165915 - crash r161659 - crash r159696 - OK 4.5 r165781 - OK