From 0d76029f92182c3682d8be2c833d45bc9a2068fe Mon Sep 17 00:00:00 2001 From: Alan Modra Date: Sun, 24 Sep 2017 14:35:33 +0930 Subject: [PATCH] PR22167, NULL pointer dereference in scan_unit_for_symbols PR 22167 * dwarf2.c (scan_unit_for_symbols): Check u.blk->data is non-NULL. --- bfd/ChangeLog | 5 +++++ bfd/dwarf2.c | 3 ++- 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/bfd/ChangeLog b/bfd/ChangeLog index af04da9e69e..57f5ad3b560 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,8 @@ +2017-09-24 Alan Modra + + PR 22167 + * dwarf2.c (scan_unit_for_symbols): Check u.blk->data is non-NULL. + 2017-09-24 Alan Modra PR 22166 diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c index 856c963985c..d1cf1aa71fc 100644 --- a/bfd/dwarf2.c +++ b/bfd/dwarf2.c @@ -3210,7 +3210,8 @@ scan_unit_for_symbols (struct comp_unit *unit) case DW_FORM_block2: case DW_FORM_block4: case DW_FORM_exprloc: - if (*attr.u.blk->data == DW_OP_addr) + if (attr.u.blk->data != NULL + && *attr.u.blk->data == DW_OP_addr) { var->stack = 0; -- 2.30.2