https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79732
Bug ID: 79732 Summary: ICE in set_ssa_default_def, at tree-dfa.c:327 Product: gcc Version: 7.0.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: gerhard.steinmetz.fort...@t-online.de Target Milestone: --- With a mismatch (int/void), down to at least 4.8, at -Os, -O1 or higher. No ICE seen with 4.9 : $ cat z1.c int bar () __attribute__ ((alias ("foo"))); void foo () { } int main () { return bar(); } $ gcc-7-20170226 -O2 -c z1.c z1.c: In function 'main': z1.c:3:22: internal compiler error: Segmentation fault int main () { return bar(); } ^~~~~ 0xbf9f9f crash_signal ../../gcc/toplev.c:337 0xc4fe42 set_ssa_default_def(function*, tree_node*, tree_node*) ../../gcc/tree-dfa.c:327 0xc7e012 expand_call_inline ../../gcc/tree-inline.c:4790 0xc7f4a4 gimple_expand_calls_inline ../../gcc/tree-inline.c:4868 0xc7f4a4 optimize_inline_calls(tree_node*) ../../gcc/tree-inline.c:5008 0x1328d91 early_inliner(function*) ../../gcc/ipa-inline.c:2721