diff options
| author | Ian Lance Taylor <iant@google.com> | 2013-10-18 04:24:48 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2013-10-18 04:24:48 +0000 |
| commit | 6c084a5b37919e3343d58bd8f6e8badd133ba9fc (patch) | |
| tree | c9eec55baa3a24a6f92d0ef72bd1652d33d57700 /libbacktrace | |
| parent | 5628781003fa01e60c0b97be1be6a5177fcecadc (diff) | |
| download | gcc-6c084a5b37919e3343d58bd8f6e8badd133ba9fc.tar.gz | |
elf.c (elf_add): Don't get the wrong offsets if a debug section is missing.
* elf.c (elf_add): Don't get the wrong offsets if a debug section
is missing.
From-SVN: r203810
Diffstat (limited to 'libbacktrace')
| -rw-r--r-- | libbacktrace/ChangeLog | 5 | ||||
| -rw-r--r-- | libbacktrace/elf.c | 11 |
2 files changed, 14 insertions, 2 deletions
diff --git a/libbacktrace/ChangeLog b/libbacktrace/ChangeLog index 9c6a8839f5e..86536a16adb 100644 --- a/libbacktrace/ChangeLog +++ b/libbacktrace/ChangeLog @@ -1,3 +1,8 @@ +2013-10-17 Ian Lance Taylor <iant@google.com> + + * elf.c (elf_add): Don't get the wrong offsets if a debug section + is missing. + 2013-10-15 David Malcolm <dmalcolm@redhat.com> * configure.ac: Add --enable-host-shared, setting up diff --git a/libbacktrace/elf.c b/libbacktrace/elf.c index c1dbc5492e0..2161ad2a258 100644 --- a/libbacktrace/elf.c +++ b/libbacktrace/elf.c @@ -759,6 +759,8 @@ elf_add (struct backtrace_state *state, int descriptor, uintptr_t base_address, { off_t end; + if (sections[i].size == 0) + continue; if (min_offset == 0 || sections[i].offset < min_offset) min_offset = sections[i].offset; end = sections[i].offset + sections[i].size; @@ -785,8 +787,13 @@ elf_add (struct backtrace_state *state, int descriptor, uintptr_t base_address, descriptor = -1; for (i = 0; i < (int) DEBUG_MAX; ++i) - sections[i].data = ((const unsigned char *) debug_view.data - + (sections[i].offset - min_offset)); + { + if (sections[i].size == 0) + sections[i].data = NULL; + else + sections[i].data = ((const unsigned char *) debug_view.data + + (sections[i].offset - min_offset)); + } if (!backtrace_dwarf_add (state, base_address, sections[DEBUG_INFO].data, |