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| author | Nick Clifton <nickc@redhat.com> | 2018-04-16 16:39:15 +0100 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2018-04-16 16:39:15 +0100 |
| commit | c77852c8916415b089e56271b6ab9f793fdb413c (patch) | |
| tree | 7a18a1c89e154da7ec5282448c5c63bcf49f9047 /gas/stabs.c | |
| parent | fc7aa874aad7eea29014c5591174d57f81500d69 (diff) | |
| download | gdb-c77852c8916415b089e56271b6ab9f793fdb413c.zip gdb-c77852c8916415b089e56271b6ab9f793fdb413c.tar.gz gdb-c77852c8916415b089e56271b6ab9f793fdb413c.tar.bz2 | |
Fix illegal memory accesses in the assembler when attempting to parse corrup tinput files.
PR 23054
* cond.c (s_ifsef): Replace use of obstack_copy with obstack_alloc
followed by memcpy.
(s_if, s_ifb, s_ifc, s_ifeqs): Likewise.
* obj-elf.c (elf_adjust_symtab): Check for local symbols before
attempting to dereference the sy_next field of a symbol.
* stabs.c (get_stab_string_offset): Fail if there is no string
following the stab directive.
Diffstat (limited to 'gas/stabs.c')
| -rw-r--r-- | gas/stabs.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gas/stabs.c b/gas/stabs.c index 73d1361..d82de31 100644 --- a/gas/stabs.c +++ b/gas/stabs.c @@ -202,6 +202,12 @@ s_stab_generic (int what, int length; string = demand_copy_C_string (&length); + if (string == NULL) + { + as_warn (_(".stab%c: missing string"), what); + ignore_rest_of_line (); + return; + } /* FIXME: We should probably find some other temporary storage for string, rather than leaking memory if someone else happens to use the notes obstack. */ |