gas: ensure XCOFF DWARF subsection are initialized to 0
debug_abbrev doesn't use end_exp to compute its size. However, it must
be NULL. Otherwise, ppc_xcoff_end might try to access uninitialized
memory.
gas/
* config/tc-ppc.c (ppc_dwsect): Use XCNEW instead of XNEW when creating
a new subsection.
diff --git a/gas/config/tc-ppc.c b/gas/config/tc-ppc.c
index 8c3b0a8..1327eab 100644
--- a/gas/config/tc-ppc.c
+++ b/gas/config/tc-ppc.c
@@ -4723,7 +4723,7 @@
else
{
/* Create a new dw subsection. */
- subseg = XNEW (struct dw_subsection);
+ subseg = XCNEW (struct dw_subsection);
if (opt_label == NULL)
{
