http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56673
Bug #: 56673 Summary: multi-versioning not GC safe Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: c++ AssignedTo: unassig...@gcc.gnu.org ReportedBy: rgue...@gcc.gnu.org CC: tmsri...@google.com If you build for example g++.dg/ext/mv1.C with --param ggc-min-expand=0 --param ggc-min-heapsize=0 (or a compiler with gcac checking enabled) you hit /space/rguenther/src/svn/trunk/gcc/testsuite/g++.dg/ext/mv1.C: In function 'int foo()': /space/rguenther/src/svn/trunk/gcc/testsuite/g++.dg/ext/mv1.C:70:6: internal compiler error: Segmentation fault 0xcd3b09 crash_signal /space/rguenther/src/svn/trunk/gcc/toplev.c:332 0x13dc1d6 htab_find /space/rguenther/src/svn/trunk/libiberty/hashtab.c:630 0x9078e7 get_cgraph_node_version(cgraph_node*) /space/rguenther/src/svn/trunk/gcc/cgraph.c:177 0x907ae7 record_function_versions(tree_node*, tree_node*) /space/rguenther/src/svn/trunk/gcc/cgraph.c:244 0x5d8d2b decls_match(tree_node*, tree_node*) /space/rguenther/src/svn/trunk/gcc/cp/decl.c:1062 0x7de156 pushdecl_maybe_friend_1 /space/rguenther/src/svn/trunk/gcc/cp/name-lookup.c:711 0x7e19c5 pushdecl_maybe_friend(tree_node*, bool) /space/rguenther/src/svn/trunk/gcc/cp/name-lookup.c:1221 0x7e19fc pushdecl(tree_node*) /space/rguenther/src/svn/trunk/gcc/cp/name-lookup.c:1231 ...