------- Comment #14 from hjl dot tools at gmail dot com 2010-09-02 13:52
-------
On Linux/x86, -fPIC triggered invalid memory access:
[...@gnu-6 gcc]$ valgrind --tool=memcheck ./cc1 -fpreprocessed
/tmp/sprintf-chk.i -quiet -dumpbase sprintf-chk.i -m32 -mtune=generic
-march=x86-64 -auxbase sprintf-chk -Os -w -version -fpic -o sprintf-chk.s
==8036== Memcheck, a memory error detector
==8036== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al.
==8036== Using Valgrind-3.5.0 and LibVEX; rerun with -h for copyright info
==8036== Command: ./cc1 -fpreprocessed /tmp/sprintf-chk.i -quiet -dumpbase
sprintf-chk.i -m32 -mtune=generic -march=x86-64 -auxbase sprintf-chk -Os -w
-version -fpic -o sprintf-chk.s
==8036==
GNU C (GCC) version 4.6.0 20100901 (experimental) (x86_64-unknown-linux-gnu)
compiled by GNU C version 4.4.4 20100630 (Red Hat 4.4.4-10), GMP
version 4.3.2, MPFR version 2.4.2-p3, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C (GCC) version 4.6.0 20100901 (experimental) (x86_64-unknown-linux-gnu)
compiled by GNU C version 4.4.4 20100630 (Red Hat 4.4.4-10), GMP
version 4.3.2, MPFR version 2.4.2-p3, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 5013623740daff515d54e379ca68fe2e
==8036== Invalid read of size 8
==8036== at 0x67F8A2: dwarf2out_notice_stack_adjust (dwarf2out.c:1624)
==8036== by 0x681BD7: dwarf2out_frame_debug (dwarf2out.c:2744)
==8036== by 0xCC2DD1: output_set_got (i386.c:8127)
==8036== by 0xEACFD2: output_615 (i386.md:11477)
==8036== by 0x719262: get_insn_template (final.c:1731)
==8036== by 0x71A9C7: final_scan_insn (final.c:2609)
==8036== by 0x719178: final (final.c:1716)
==8036== by 0x71D885: rest_of_handle_final (final.c:4235)
==8036== by 0x8F68AA: execute_one_pass (passes.c:1568)
==8036== by 0x8F6A99: execute_pass_list (passes.c:1623)
==8036== by 0x8F6ABA: execute_pass_list (passes.c:1624)
==8036== by 0x8F6ABA: execute_pass_list (passes.c:1624)
==8036== Address 0xb8ee848 is 0 bytes after a block of size 2,472 alloc'd
==8036== at 0x4A0515D: malloc (vg_replace_malloc.c:195)
==8036== by 0x1118BB3: xmalloc (xmalloc.c:147)
==8036== by 0x67EFA1: compute_barrier_args_size (dwarf2out.c:1429)
==8036== by 0x67F873: dwarf2out_notice_stack_adjust (dwarf2out.c:1619)
==8036== by 0x681BD7: dwarf2out_frame_debug (dwarf2out.c:2744)
==8036== by 0x719E79: final_scan_insn (final.c:2015)
==8036== by 0x719178: final (final.c:1716)
==8036== by 0x71D885: rest_of_handle_final (final.c:4235)
==8036== by 0x8F68AA: execute_one_pass (passes.c:1568)
==8036== by 0x8F6A99: execute_pass_list (passes.c:1623)
==8036== by 0x8F6ABA: execute_pass_list (passes.c:1624)
==8036== by 0x8F6ABA: execute_pass_list (passes.c:1624)
==8036==
==8036==
==8036== HEAP SUMMARY:
==8036== in use at exit: 432,089 bytes in 1,754 blocks
==8036== total heap usage: 15,425 allocs, 13,671 frees, 7,502,579 bytes
allocated
==8036==
==8036== LEAK SUMMARY:
==8036== definitely lost: 0 bytes in 0 blocks
==8036== indirectly lost: 0 bytes in 0 blocks
==8036== possibly lost: 16,064 bytes in 2 blocks
==8036== still reachable: 416,025 bytes in 1,752 blocks
==8036== suppressed: 0 bytes in 0 blocks
==8036== Rerun with --leak-check=full to see details of leaked memory
==8036==
==8036== For counts of detected and suppressed errors, rerun with: -v
==8036== ERROR SUMMARY: 5 errors from 1 contexts (suppressed: 6 from 6)
[...@gnu-6 gcc]$
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ubizjak at gmail dot com
GCC build triplet|x86_64-apple-darwin10 |
GCC host triplet|x86_64-apple-darwin10 |
GCC target triplet|x86_64-apple-darwin10 |
Summary|r163660 ICEs gcc.c- |Invalid memory access in
|torture/execute/builtins/spr|gcc.c-
|intf-chk.c compilation, -Os|torture/execute/builtins/spr
|at -m32 |intf-chk.c
Target Milestone|--- |4.6.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45484
