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| author | Alan Modra <amodra@gmail.com> | 2017-09-24 14:36:48 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2017-09-24 16:17:19 +0930 |
| commit | d8010d3e75ec7194a4703774090b27486b742d48 (patch) | |
| tree | 05e62718647ce5cad15cb23687e56146d611465a /bfd | |
| parent | 515f23e63c0074ab531bc954f84ca40c6281a724 (diff) | |
| download | gdb-d8010d3e75ec7194a4703774090b27486b742d48.zip gdb-d8010d3e75ec7194a4703774090b27486b742d48.tar.gz gdb-d8010d3e75ec7194a4703774090b27486b742d48.tar.bz2 | |
PR22186, divide-by-zero in decode_line_info
PR 22186
* dwarf2.c (decode_line_info): Fail on lh.line_range of zero
rather than dividing by zero.
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/ChangeLog | 6 | ||||
| -rw-r--r-- | bfd/dwarf2.c | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index f63a8bb..e232764 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,5 +1,11 @@ 2017-09-24 Alan Modra <amodra@gmail.com> + PR 22186 + * dwarf2.c (decode_line_info): Fail on lh.line_range of zero + rather than dividing by zero. + +2017-09-24 Alan Modra <amodra@gmail.com> + PR 22169 * dwarf2.c (decode_line_info): Correct .debug_line unit_length check. diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c index 89a3f9b..8b2281e 100644 --- a/bfd/dwarf2.c +++ b/bfd/dwarf2.c @@ -2437,6 +2437,8 @@ decode_line_info (struct comp_unit *unit, struct dwarf2_debug *stash) case DW_LNS_set_basic_block: break; case DW_LNS_const_add_pc: + if (lh.line_range == 0) + goto line_fail; if (lh.maximum_ops_per_insn == 1) address += (lh.minimum_instruction_length * ((255 - lh.opcode_base) / lh.line_range)); |