From e338894dc2e603683bed2172e8e9f25b29051005 Mon Sep 17 00:00:00 2001 From: Alan Modra Date: Tue, 26 Sep 2017 09:32:18 +0930 Subject: [PATCH] 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. --- bfd/ChangeLog | 6 ++++++ bfd/dwarf2.c | 2 +- 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 54199ad042..5c4cc2bccd 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,9 @@ +2017-09-26 Alan Modra + + PR 22204 + * dwarf2.c (decode_line_info): Ensure line_ptr stays within + bounds in inner loop. + 2017-09-25 Alan Modra PR 22202 diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c index 9ae5fba637..2c45790935 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; -- 2.34.1