http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48762
Summary: valgrind: Invalid read/write of size 8 in cse_main
with -O --param max-cse-path-length=0 on basic code
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: zso...@seznam.cz
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
----- testcase.c -----
void foo (void) {};
----------------------
Compiler output (under valgrind):
$ cc1 -O --param max-cse-path-length=0 testcase.c -quiet
==7641== Invalid read of size 8
==7641== at 0x10F8710: search_line_sse2 (lex.c:394)
==7641== by 0x10F88B9: _cpp_clean_line (lex.c:665)
==7641== by 0x10F9297: _cpp_get_fresh_line (lex.c:1886)
==7641== by 0x10FAA50: _cpp_lex_direct (lex.c:1951)
==7641== by 0x10FB836: _cpp_lex_token (lex.c:1825)
==7641== by 0x10FE0BF: cpp_get_token (macro.c:1239)
==7641== by 0x10FE21F: cpp_get_token_with_location (macro.c:1351)
==7641== by 0x56ABA2: c_lex_with_flags (c-lex.c:302)
==7641== by 0x521983: c_lex_one_token (c-parser.c:216)
==7641== by 0x534237: c_parse_file (c-parser.c:398)
==7641== by 0x570274: c_common_parse_file (c-opts.c:1092)
==7641== by 0x9002EB: toplev_main (toplev.c:579)
==7641== Address 0x7231680 is 16 bytes inside a block of size 21 alloc'd
==7641== at 0x4C29504: realloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==7641== by 0x1121D9C: xrealloc (xmalloc.c:179)
==7641== by 0x10ED063: _cpp_convert_input (charset.c:1734)
==7641== by 0x10F5F52: read_file (files.c:648)
==7641== by 0x10F68FA: _cpp_stack_file (files.c:723)
==7641== by 0x10F8135: cpp_read_main_file (init.c:570)
==7641== by 0x56F92A: c_common_post_options (c-opts.c:1031)
==7641== by 0x8FFCF6: toplev_main (toplev.c:1283)
==7641== by 0x644AB6C: (below main) (in /lib64/libc-2.11.3.so)
==7641==
==7641== Invalid write of size 8
==7641== at 0x101CE2E: cse_main (cse.c:6118)
==7641== by 0x101E05D: rest_of_handle_cse (cse.c:7380)
==7641== by 0x8132C5: execute_one_pass (passes.c:1555)
==7641== by 0x8135A4: execute_pass_list (passes.c:1610)
==7641== by 0x8135B6: execute_pass_list (passes.c:1611)
==7641== by 0x95B4AA: tree_rest_of_compilation (tree-optimize.c:423)
==7641== by 0xB3E632: cgraph_expand_function (cgraphunit.c:1576)
==7641== by 0xB40B4B: cgraph_optimize (cgraphunit.c:1635)
==7641== by 0xB410D9: cgraph_finalize_compilation_unit (cgraphunit.c:1096)
==7641== by 0x4F9623: c_write_global_declarations (c-decl.c:9883)
==7641== by 0x900327: toplev_main (toplev.c:591)
==7641== by 0x644AB6C: (below main) (in /lib64/libc-2.11.3.so)
==7641== Address 0x7527030 is 0 bytes inside a block of size 1 alloc'd
==7641== at 0x4C26F30: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==7641== by 0x1121D07: xmalloc (xmalloc.c:147)
==7641== by 0x101CC54: cse_main (cse.c:6473)
==7641== by 0x101E05D: rest_of_handle_cse (cse.c:7380)
==7641== by 0x8132C5: execute_one_pass (passes.c:1555)
==7641== by 0x8135A4: execute_pass_list (passes.c:1610)
==7641== by 0x8135B6: execute_pass_list (passes.c:1611)
==7641== by 0x95B4AA: tree_rest_of_compilation (tree-optimize.c:423)
==7641== by 0xB3E632: cgraph_expand_function (cgraphunit.c:1576)
==7641== by 0xB40B4B: cgraph_optimize (cgraphunit.c:1635)
==7641== by 0xB410D9: cgraph_finalize_compilation_unit (cgraphunit.c:1096)
==7641== by 0x4F9623: c_write_global_declarations (c-decl.c:9883)
==7641==
==7641== Invalid read of size 8
==7641== at 0x101D218: cse_main (cse.c:6266)
==7641== by 0x101E05D: rest_of_handle_cse (cse.c:7380)
==7641== by 0x8132C5: execute_one_pass (passes.c:1555)
==7641== by 0x8135A4: execute_pass_list (passes.c:1610)
==7641== by 0x8135B6: execute_pass_list (passes.c:1611)
==7641== by 0x95B4AA: tree_rest_of_compilation (tree-optimize.c:423)
==7641== by 0xB3E632: cgraph_expand_function (cgraphunit.c:1576)
==7641== by 0xB40B4B: cgraph_optimize (cgraphunit.c:1635)
==7641== by 0xB410D9: cgraph_finalize_compilation_unit (cgraphunit.c:1096)
==7641== by 0x4F9623: c_write_global_declarations (c-decl.c:9883)
==7641== by 0x900327: toplev_main (toplev.c:591)
==7641== by 0x644AB6C: (below main) (in /lib64/libc-2.11.3.so)
==7641== Address 0x7527030 is 0 bytes inside a block of size 1 alloc'd
==7641== at 0x4C26F30: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==7641== by 0x1121D07: xmalloc (xmalloc.c:147)
==7641== by 0x101CC54: cse_main (cse.c:6473)
==7641== by 0x101E05D: rest_of_handle_cse (cse.c:7380)
==7641== by 0x8132C5: execute_one_pass (passes.c:1555)
==7641== by 0x8135A4: execute_pass_list (passes.c:1610)
==7641== by 0x8135B6: execute_pass_list (passes.c:1611)
==7641== by 0x95B4AA: tree_rest_of_compilation (tree-optimize.c:423)
==7641== by 0xB3E632: cgraph_expand_function (cgraphunit.c:1576)
==7641== by 0xB40B4B: cgraph_optimize (cgraphunit.c:1635)
==7641== by 0xB410D9: cgraph_finalize_compilation_unit (cgraphunit.c:1096)
==7641== by 0x4F9623: c_write_global_declarations (c-decl.c:9883)
==7641==
==7641== Invalid read of size 8
==7641== at 0x101D0AD: cse_main (cse.c:6106)
==7641== by 0x101E05D: rest_of_handle_cse (cse.c:7380)
==7641== by 0x8132C5: execute_one_pass (passes.c:1555)
==7641== by 0x8135A4: execute_pass_list (passes.c:1610)
==7641== by 0x8135B6: execute_pass_list (passes.c:1611)
==7641== by 0x95B4AA: tree_rest_of_compilation (tree-optimize.c:423)
==7641== by 0xB3E632: cgraph_expand_function (cgraphunit.c:1576)
==7641== by 0xB40B4B: cgraph_optimize (cgraphunit.c:1635)
==7641== by 0xB410D9: cgraph_finalize_compilation_unit (cgraphunit.c:1096)
==7641== by 0x4F9623: c_write_global_declarations (c-decl.c:9883)
==7641== by 0x900327: toplev_main (toplev.c:591)
==7641== by 0x644AB6C: (below main) (in /lib64/libc-2.11.3.so)
==7641== Address 0x7527030 is 0 bytes inside a block of size 1 alloc'd
==7641== at 0x4C26F30: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==7641== by 0x1121D07: xmalloc (xmalloc.c:147)
==7641== by 0x101CC54: cse_main (cse.c:6473)
==7641== by 0x101E05D: rest_of_handle_cse (cse.c:7380)
==7641== by 0x8132C5: execute_one_pass (passes.c:1555)
==7641== by 0x8135A4: execute_pass_list (passes.c:1610)
==7641== by 0x8135B6: execute_pass_list (passes.c:1611)
==7641== by 0x95B4AA: tree_rest_of_compilation (tree-optimize.c:423)
==7641== by 0xB3E632: cgraph_expand_function (cgraphunit.c:1576)
==7641== by 0xB40B4B: cgraph_optimize (cgraphunit.c:1635)
==7641== by 0xB410D9: cgraph_finalize_compilation_unit (cgraphunit.c:1096)
==7641== by 0x4F9623: c_write_global_declarations (c-decl.c:9883)
==7641==
Tested revisions:
r172929 - fail
4.6 r172337 - fail
4.5 r172337 - fail
4.4 r172337 - fail
