[Bug tree-optimization/45412] New: [4.6 Regression] ICE: SIGSEGV in update_ssa (tree-flow-inline.h:479) with -O2 -fipa-cp-clone -ftracer

["zsojka at seznam dot cz" <gcc-bugzilla at gcc dot gnu dot org>]

Command line:
$ g++ -O2 -fipa-cp-clone -ftracer testcase.C

Valgrind output:
$ valgrind -q --trace-children=yes
/mnt/svn/gcc-trunk/binary-163468-lto-fortran-checking-yes-rtl-df/bin/g++ -O2
-fipa-cp-clone -ftracer testcase.C
==31083== Invalid read of size 8
==31083==    at 0x112BDF0: search_line_sse2 (lex.c:384)
==31083==    by 0x112BFD9: _cpp_clean_line (lex.c:649)
==31083==    by 0x112C9D7: _cpp_get_fresh_line (lex.c:1862)
==31083==    by 0x112E161: _cpp_lex_direct (lex.c:1927)
==31083==    by 0x112EF56: _cpp_lex_token (lex.c:1801)
==31083==    by 0x1131697: cpp_get_token (macro.c:1240)
==31083==    by 0x113194F: cpp_get_token_with_location (macro.c:1352)
==31083==    by 0x687E5C: c_lex_with_flags (c-lex.c:302)
==31083==    by 0x59ADAF: cp_lexer_get_preprocessor_token (parser.c:525)
==31083==    by 0x5C19BA: c_parse_file (parser.c:425)
==31083==    by 0x68D4EA: c_common_parse_file (c-opts.c:1206)
==31083==    by 0x9E7518: toplev_main (toplev.c:971)
==31083==  Address 0x71085b8 is 216 bytes inside a block of size 217 alloc'd
==31083==    at 0x4C261DF: realloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==31083==    by 0x115545C: xrealloc (xmalloc.c:179)
==31083==    by 0x1120BAF: _cpp_convert_input (charset.c:1734)
==31083==    by 0x1129542: read_file (files.c:648)
==31083==    by 0x1129F6A: _cpp_stack_file (files.c:723)
==31083==    by 0x112B850: cpp_read_main_file (init.c:570)
==31083==    by 0x68CB9A: c_common_post_options (c-opts.c:1124)
==31083==    by 0x9E6A14: toplev_main (toplev.c:1743)
==31083==    by 0x6589BBC: (below main) (in /lib64/libc-2.11.2.so)
==31083== 
==31083== Invalid read of size 8
==31083==    at 0x112BDE3: search_line_sse2 (lex.c:372)
==31083==    by 0x112BFD9: _cpp_clean_line (lex.c:649)
==31083==    by 0x112C9D7: _cpp_get_fresh_line (lex.c:1862)
==31083==    by 0x112E161: _cpp_lex_direct (lex.c:1927)
==31083==    by 0x112EF56: _cpp_lex_token (lex.c:1801)
==31083==    by 0x1131697: cpp_get_token (macro.c:1240)
==31083==    by 0x113194F: cpp_get_token_with_location (macro.c:1352)
==31083==    by 0x687E5C: c_lex_with_flags (c-lex.c:302)
==31083==    by 0x59ADAF: cp_lexer_get_preprocessor_token (parser.c:525)
==31083==    by 0x5C19BA: c_parse_file (parser.c:425)
==31083==    by 0x68D4EA: c_common_parse_file (c-opts.c:1206)
==31083==    by 0x9E7518: toplev_main (toplev.c:971)
==31083==  Address 0x71085b8 is 216 bytes inside a block of size 217 alloc'd
==31083==    at 0x4C261DF: realloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==31083==    by 0x115545C: xrealloc (xmalloc.c:179)
==31083==    by 0x1120BAF: _cpp_convert_input (charset.c:1734)
==31083==    by 0x1129542: read_file (files.c:648)
==31083==    by 0x1129F6A: _cpp_stack_file (files.c:723)
==31083==    by 0x112B850: cpp_read_main_file (init.c:570)
==31083==    by 0x68CB9A: c_common_post_options (c-opts.c:1124)
==31083==    by 0x9E6A14: toplev_main (toplev.c:1743)
==31083==    by 0x6589BBC: (below main) (in /lib64/libc-2.11.2.so)
==31083== 
==31083== Invalid read of size 8
==31083==    at 0xA2CDE5: update_ssa (tree-flow-inline.h:479)
==31083==    by 0x8F95D7: execute_function_todo (passes.c:1206)
==31083==    by 0x8F9BEE: execute_todo (passes.c:1283)
==31083==    by 0x8FC2B9: execute_one_pass (passes.c:1591)
==31083==    by 0x8FC4E4: execute_pass_list (passes.c:1623)
==31083==    by 0x8FC4F6: execute_pass_list (passes.c:1624)
==31083==    by 0xA3EE65: tree_rest_of_compilation (tree-optimize.c:452)
==31083==    by 0xBFB595: cgraph_expand_function (cgraphunit.c:1469)
==31083==    by 0xBFDF99: cgraph_optimize (cgraphunit.c:1548)
==31083==    by 0xBFE4E9: cgraph_finalize_compilation_unit (cgraphunit.c:1012)
==31083==    by 0x58BD9C: cp_write_global_declarations (decl2.c:3924)
==31083==    by 0x9E7554: toplev_main (toplev.c:983)
==31083==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
==31083== 
testcase.C: In member function 'virtual int S::vm()':
testcase.C:11:1: 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.

Tested revisions:
r163468 - crash
r162940 - crash
r161659 - OK


-- 
           Summary: [4.6 Regression] ICE: SIGSEGV in update_ssa (tree-flow-
                    inline.h:479) with -O2 -fipa-cp-clone -ftracer
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        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=45412