[Bug c/53904] New: trunk has valgrind errors for c-c++-common/torture/complex-sign-mul.c on x86-64.

["zadeck at naturalbridge dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53904

             Bug #: 53904
           Summary: trunk has valgrind errors for
                    c-c++-common/torture/complex-sign-mul.c on x86-64.
    Classification: Unclassified
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zadeck@naturalbridge.com


built the trunk on x86-64 under ubuntu.

i know that this bug is at least as old as r 188999 because that is when i
first saw it, but it is still there as of r 189386 from today.

Bug shows up at all -O levels.

shows up on my private port also, but i guess that is not really any use to
anyone else.  But it causes an ice there so that is how i found it.

valgrind ../.././cc1 -quiet -v -iprefix
/home/zadeck/gcc/gbBaseline/gcc/../lib/gcc/x86_64-unknown-linux-gnu/4.8.0/
-isystem ../.././include -isystem ../.././include-fixed -D NO_TRAMPOLINES -D
NO_TRAMPOLINES
/home/zadeck/gcc/c2wide/gcc/gcc/testsuite/c-c++-common/torture/complex-sign-mul.c
-quiet -dumpbase complex-sign-mul.c -mtune=generic -march=x86-64 -auxbase
complex-sign-mul -g -O3 -std=gnu99 -version -fno-diagnostics-show-caret -o
/tmp/ccd2Ykcd.s
==13911== Memcheck, a memory error detector
==13911== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
==13911== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info
==13911== Command: ../.././cc1 -quiet -v -iprefix
/home/zadeck/gcc/gbBaseline/gcc/../lib/gcc/x86_64-unknown-linux-gnu/4.8.0/
-isystem ../.././include -isystem ../.././include-fixed -D NO_TRAMPOLINES -D
NO_TRAMPOLINES
/home/zadeck/gcc/c2wide/gcc/gcc/testsuite/c-c++-common/torture/complex-sign-mul.c
-quiet -dumpbase complex-sign-mul.c -mtune=generic -march=x86-64 -auxbase
complex-sign-mul -g -O3 -std=gnu99 -version -fno-diagnostics-show-caret -o
/tmp/ccd2Ykcd.s
==13911== 
GNU C (GCC) version 4.8.0 20120709 (experimental) [trunk revision 157801]
(x86_64-unknown-linux-gnu)
    compiled by GNU C version 4.6.3, GMP version 5.0.2, MPFR version 3.1.0-p3,
MPC version 0.9
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
ignoring nonexistent directory
"/home/zadeck/gcc/gbBaseline/gcc/../lib/gcc/x86_64-unknown-linux-gnu/4.8.0/include"
ignoring nonexistent directory
"/home/zadeck/gcc/gbBaseline/gcc/../lib/gcc/x86_64-unknown-linux-gnu/4.8.0/include-fixed"
ignoring nonexistent directory
"/home/zadeck/gcc/gbBaseline/gcc/../lib/gcc/x86_64-unknown-linux-gnu/4.8.0/../../../../x86_64-unknown-linux-gnu/include"
ignoring nonexistent directory
"/usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/include"
ignoring nonexistent directory
"/usr/local/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/include-fixed"
ignoring nonexistent directory
"/usr/local/lib/../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 ../.././include
 ../.././include-fixed
 /usr/local/include
 /usr/include
End of search list.
GNU C (GCC) version 4.8.0 20120709 (experimental) [trunk revision 157801]
(x86_64-unknown-linux-gnu)
    compiled by GNU C version 4.6.3, GMP version 5.0.2, MPFR version 3.1.0-p3,
MPC version 0.9
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 91429a3f3152806ffebd3a415263526d
==13911== Invalid read of size 8
==13911==    at 0xD688C9: search_line_sse2 (lex.c:393)
==13911==    by 0xD68AA1: _cpp_clean_line (lex.c:742)
==13911==    by 0xD694C7: _cpp_get_fresh_line (lex.c:2035)
==13911==    by 0xD6AD60: _cpp_lex_direct (lex.c:2100)
==13911==    by 0xD6BB46: _cpp_lex_token (lex.c:1974)
==13911==    by 0xD6FF7F: cpp_get_token_1 (macro.c:2357)
==13911==    by 0x541EEF: c_lex_with_flags (c-lex.c:299)
==13911==    by 0x4F27C3: c_lex_one_token (c-parser.c:218)
==13911==    by 0x4F2B02: c_parser_peek_token (c-parser.c:400)
==13911==    by 0x501E56: c_parser_compound_statement_nostart (c-parser.c:412)
==13911==    by 0x503898: c_parser_compound_statement (c-parser.c:4072)
==13911==    by 0x4FFA8B: c_parser_declaration_or_fndef (c-parser.c:1757)
==13911==  Address 0x5b85b40 is 1,712 bytes inside a block of size 1,716
alloc'd
==13911==    at 0x4C2B7B2: realloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==13911==    by 0xD9691C: xrealloc (xmalloc.c:179)
==13911==    by 0xD5D0CB: _cpp_convert_input (charset.c:1734)
==13911==    by 0xD65F72: read_file (files.c:681)
==13911==    by 0xD66A1A: _cpp_stack_file (files.c:756)
==13911==    by 0xD68335: cpp_read_main_file (init.c:600)
==13911==    by 0x5482B1: c_common_post_options (c-opts.c:1063)
==13911==    by 0x89F218: toplev_main (toplev.c:1216)
==13911==    by 0x573576C: (below main) (libc-start.c:226)
==13911== 
==13911== Invalid read of size 8
==13911==    at 0xD688B3: search_line_sse2 (lex.c:381)
==13911==    by 0xD68AA1: _cpp_clean_line (lex.c:742)
==13911==    by 0xD694C7: _cpp_get_fresh_line (lex.c:2035)
==13911==    by 0xD6AD60: _cpp_lex_direct (lex.c:2100)
==13911==    by 0xD6BB46: _cpp_lex_token (lex.c:1974)
==13911==    by 0xD6FF7F: cpp_get_token_1 (macro.c:2357)
==13911==    by 0x541EEF: c_lex_with_flags (c-lex.c:299)
==13911==    by 0x4F27C3: c_lex_one_token (c-parser.c:218)
==13911==    by 0x4F2B02: c_parser_peek_token (c-parser.c:400)
==13911==    by 0x501E56: c_parser_compound_statement_nostart (c-parser.c:412)
==13911==    by 0x503898: c_parser_compound_statement (c-parser.c:4072)
==13911==    by 0x4FFA8B: c_parser_declaration_or_fndef (c-parser.c:1757)
==13911==  Address 0x5b85b40 is 1,712 bytes inside a block of size 1,716
alloc'd
==13911==    at 0x4C2B7B2: realloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==13911==    by 0xD9691C: xrealloc (xmalloc.c:179)
==13911==    by 0xD5D0CB: _cpp_convert_input (charset.c:1734)
==13911==    by 0xD65F72: read_file (files.c:681)
==13911==    by 0xD66A1A: _cpp_stack_file (files.c:756)
==13911==    by 0xD68335: cpp_read_main_file (init.c:600)
==13911==    by 0x5482B1: c_common_post_options (c-opts.c:1063)
==13911==    by 0x89F218: toplev_main (toplev.c:1216)
==13911==    by 0x573576C: (below main) (libc-start.c:226)
==13911== 
==13911== 
==13911== HEAP SUMMARY:
==13911==     in use at exit: 752,269 bytes in 3,592 blocks
==13911==   total heap usage: 303,298 allocs, 299,706 frees, 195,292,752 bytes
allocated
==13911== 
==13911== LEAK SUMMARY:
==13911==    definitely lost: 35 bytes in 2 blocks
==13911==    indirectly lost: 0 bytes in 0 blocks
==13911==      possibly lost: 30,776 bytes in 3 blocks
==13911==    still reachable: 721,458 bytes in 3,587 blocks
==13911==         suppressed: 0 bytes in 0 blocks
==13911== Rerun with --leak-check=full to see details of leaked memory
==13911== 
==13911== For counts of detected and suppressed errors, rerun with: -v
==13911== ERROR SUMMARY: 4 errors from 2 contexts (suppressed: 2 from 2)
moria:~/gcc/gbBaseline/gcc/testsuite/gcc(30)