xmalloc section name

[Alan Modra]

Found while testing my "hash table for bfd sections" patch.
get_stab_string_offset calls subseg_new, which calls subseg_get,
which calls bfd_make_section_old_way.  If the section doesn't already
exist, a new section is made with a reference back to the string.

gas/ChangeLog
	* config/obj-elf.c (obj_elf_init_stab_section): References are
	kept to section name strings.  Don't alloca them!

Index: gas/config/obj-elf.c
===================================================================
RCS file: /cvs/src/src/gas/config/obj-elf.c,v
retrieving revision 1.44
diff -u -p -r1.44 obj-elf.c
--- obj-elf.c	2001/11/13 03:24:25	1.44
+++ obj-elf.c	2001/12/14 15:47:14
@@ -1641,7 +1641,7 @@ obj_elf_init_stab_section (seg)
   /* Zero it out.  */
   memset (p, 0, 12);
   as_where (&file, (unsigned int *) NULL);
-  stabstr_name = (char *) alloca (strlen (segment_name (seg)) + 4);
+  stabstr_name = (char *) xmalloc (strlen (segment_name (seg)) + 4);
   strcpy (stabstr_name, segment_name (seg));
   strcat (stabstr_name, "str");
   stroff = get_stab_string_offset (file, stabstr_name);