diff options
| author | Mark Wielaard <[email protected]> | 2015-04-22 12:47:46 +0200 |
|---|---|---|
| committer | Mark Wielaard <[email protected]> | 2015-04-28 14:14:09 +0200 |
| commit | 32d5b6f61a90b3c0c777b73eee973d6816a21294 (patch) | |
| tree | 67b34b8ac760b51a0ca48193dff8919d4994c1bc /src/readelf.c | |
| parent | 65a211f9028304757df8f4fa7cb3cc77d1501420 (diff) | |
readelf: Fix cie_offset calculation comparison on 32bit.
gcc -fsanitize=undefined pointed out that on 32bit systems the calculation
to match the cie_offset to the cie_id could be undefined because a cie_id
could be an unsigned 64bit value while ptrdiff_t is only 32bits. Correct
the calculation to use 64bit values.
Signed-off-by: Mark Wielaard <[email protected]>
Diffstat (limited to 'src/readelf.c')
| -rw-r--r-- | src/readelf.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/readelf.c b/src/readelf.c index 26c7eedb..b4cb3a82 100644 --- a/src/readelf.c +++ b/src/readelf.c @@ -5619,8 +5619,8 @@ print_debug_frame_section (Dwfl_Module *dwflmod, Ebl *ebl, GElf_Ehdr *ehdr, struct cieinfo *cie = cies; while (cie != NULL) if (is_eh_frame - ? start - (ptrdiff_t) cie_id == cie->cie_offset - : (ptrdiff_t) cie_id == cie->cie_offset) + ? ((Dwarf_Off) start - cie_id) == (Dwarf_Off) cie->cie_offset + : cie_id == (Dwarf_Off) cie->cie_offset) break; else cie = cie->next; |