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GNU nm: Avoid NULL dereference

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bfd_dwarf2_find_line() calls find_line() with NULL functionname_ptr,
which resulted in a crash on certain ELF objects.

This change was implemented independently from upstream binutils, but
I have checked that the crash does not happen there.

MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Ed Maste 2015-02-25 22:12:37 +00:00
parent 75493a82e0
commit 4b8807a4d3
1 changed files with 2 additions and 1 deletions
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3
contrib/binutils/bfd/dwarf2.c
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@ -2382,7 +2382,8 @@ find_line (bfd *abfd,
else
addr += section->vma;
*filename_ptr = NULL;
*functionname_ptr = NULL;
if (!do_line)
*functionname_ptr = NULL;
*linenumber_ptr = 0;
if (! *pinfo)