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[binutils-gdb] PR22204, Lack of DW_LNE_end_sequence causes "infinite" loop
- From: Alan Modra <amodra at sourceware dot org>
- To: bfd-cvs at sourceware dot org
- Date: 26 Sep 2017 00:14:14 -0000
- Subject: [binutils-gdb] PR22204, Lack of DW_LNE_end_sequence causes "infinite" loop
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=e338894dc2e603683bed2172e8e9f25b29051005
commit e338894dc2e603683bed2172e8e9f25b29051005
Author: Alan Modra <amodra@gmail.com>
Date: Tue Sep 26 09:32:18 2017 +0930
PR22204, Lack of DW_LNE_end_sequence causes "infinite" loop
PR 22204
* dwarf2.c (decode_line_info): Ensure line_ptr stays within
bounds in inner loop.
Diff:
---
bfd/ChangeLog | 6 ++++++
bfd/dwarf2.c | 2 +-
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 54199ad..5c4cc2b 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,9 @@
+2017-09-26 Alan Modra <amodra@gmail.com>
+
+ PR 22204
+ * dwarf2.c (decode_line_info): Ensure line_ptr stays within
+ bounds in inner loop.
+
2017-09-25 Alan Modra <amodra@gmail.com>
PR 22202
diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c
index 9ae5fba..2c45790 100644
--- a/bfd/dwarf2.c
+++ b/bfd/dwarf2.c
@@ -2277,7 +2277,7 @@ decode_line_info (struct comp_unit *unit, struct dwarf2_debug *stash)
bfd_vma high_pc = 0;
/* Decode the table. */
- while (! end_sequence)
+ while (!end_sequence && line_ptr < line_end)
{
op_code = read_1_byte (abfd, line_ptr, line_end);
line_ptr += 1;