commit 568d77ce8e0a508fbbd9e71e9938d6dab1639912

Author: mjw <mjw@a5019735-40e9-0310-863c-91ae7b9d1cf9>

Date:   Wed Nov 20 11:54:38 2013 +0000

    dwz compressed alternate .debug_info and .debug_str not read correctly.

    Bug #327837. The buildid from the .gnu_debugaltlink section was parsed

    incorrectly (from the wrong offset). Causing the debug alt file not to

    be found.

    git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13715 a5019735-40e9-0310-863c-91ae7b9d1cf9

diff --git a/coregrind/m_debuginfo/readelf.c b/coregrind/m_debuginfo/readelf.c

index e72e0d7..b7d574a 100644

--- a/coregrind/m_debuginfo/readelf.c

+++ b/coregrind/m_debuginfo/readelf.c

@@ -2609,7 +2609,8 @@ Bool ML_(read_elf_debug_info) ( struct _DebugInfo* di )

       vg_assert(aimg == NULL);

       if (debugaltlink_escn.img != NULL) {

-         UInt buildid_offset = ML_(img_strlen)(debugaltlink_escn.img, 0)+1;

+         UInt buildid_offset = ML_(img_strlen)(debugaltlink_escn.img,

+                                               debugaltlink_escn.ioff)+1;

          vg_assert(buildid_offset < debugaltlink_escn.szB);