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

...

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