Command line: g++ -flto testcase.C Tested revisions: r157965 - crash r157805 - crash
Valgrind output: $ valgrind -q --trace-children=yes /mnt/svn/gcc-trunk/binary-157965-lto/bin/g++ -flto testcase.C ==6163== Conditional jump or move depends on uninitialised value(s) ==6163== at 0xDF5175: longest_match (deflate.c:1143) ==6163== by 0xDF573A: deflate_slow (deflate.c:1595) ==6163== by 0xDF66CC: deflate (deflate.c:790) ==6163== by 0xD71E3C: lto_end_compression (lto-compress.c:196) ==6163== by 0xD6EEE4: lto_end_section (lto-section-out.c:192) ==6163== by 0xD6F3DD: lto_destroy_simple_output_block (lto-section-out.c:556) ==6163== by 0xD6DBC3: lto_output (lto-streamer-out.c:2125) ==6163== by 0x854370: ipa_write_summaries_2 (passes.c:1652) ==6163== by 0x85446E: ipa_write_summaries_1 (passes.c:1678) ==6163== by 0x856EFA: ipa_write_summaries (passes.c:1727) ==6163== by 0xAD4284: cgraph_optimize (cgraphunit.c:1793) ==6163== by 0xAD46E4: cgraph_finalize_compilation_unit (cgraphunit.c:1096) ==6163== ... ==6175== Invalid read of size 2 ==6175== at 0x5F87AE: aggregate_value_p (function.c:1859) ==6175== by 0x5FD107: allocate_struct_function (function.c:4145) ==6175== by 0x4A58A6: materialize_cgraph (lto.c:114) ==6175== by 0x4A6460: lto_main (lto.c:2080) ==6175== by 0x75C3CC: toplev_main (toplev.c:1053) ==6175== by 0x6586A3C: (below main) (in /lib64/libc-2.10.1.so) ==6175== Address 0x0 is not stack'd, malloc'd or (recently) free'd ==6175== In function 'foo': lto1: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. lto-wrapper: /mnt/svn/gcc-trunk/binary-157965-lto/bin/g++ returned 1 exit status collect2: lto-wrapper returned 1 exit status -- Summary: ICE: SIGSEGV with -flto in aggregate_value_p (function.c:1859) Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: lto AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: zsojka at seznam dot cz GCC host triplet: x86_64-pc-linux-gnu GCC target triplet: x86_64-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43658
