I got: mayalias-2.c:2: internal compiler error: in splice_child_die, at dwarf2out.c:5552
with a modified compiler, but I see that it fails on powerpc64-linux <http://gcc.gnu.org/ml/gcc-testresults/2006-08/msg01176.html> and arm-none-eabi <http://gcc.gnu.org/ml/gcc-testresults/2006-08/msg01185.html>, so it's probably pretty common. The problem is that the front-end is calling the DWARF output code with two shallow copies of the same structure, 'S'. The DWARF code detects that two different structures have the same members and aborts. -- Summary: gcc.c-torture/execute/mayalias-2.c failure with -O3 - gdwarf-2 Product: gcc Version: 4.2.0 Status: UNCONFIRMED Keywords: ice-on-valid-code, ice-checking Severity: normal Priority: P3 Component: debug AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: geoffk at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28880
