Remove more alloca calls

[Alan Modra <amodra at gmail dot com>]

More fallout from -Wstack-usage.  Committed.

	* config/tc-alpha.c (load_expression): Replace alloca with xmalloc.
	(emit_jsrjmp, tc_gen_reloc): Likewise.
	* config/tc-i370.c (i370_macro): Likewise.

diff --git a/gas/config/tc-alpha.c b/gas/config/tc-alpha.c
index e849a95..4b86d4b 100644
--- a/gas/config/tc-alpha.c
+++ b/gas/config/tc-alpha.c
@@ -1384,13 +1384,14 @@ load_expression (int targreg,
 		    ptr1 = strstr (symname, "..") + 2;
 		    if (ptr1 > ptr2)
 		      ptr1 = symname;
-		    ensymname = (char *) alloca (ptr2 - ptr1 + 5);
+		    ensymname = (char *) xmalloc (ptr2 - ptr1 + 5);
 		    memcpy (ensymname, ptr1, ptr2 - ptr1);
 		    memcpy (ensymname + (ptr2 - ptr1), "..en", 5);
 
 		    gas_assert (insn.nfixups + 1 <= MAX_INSN_FIXUPS);
 		    insn.fixups[insn.nfixups].reloc = BFD_RELOC_ALPHA_NOP;
 		    ensym = symbol_find_or_make (ensymname);
+		    free (ensymname);
 		    symbol_mark_used (ensym);
 		    /* The fixup must be the same as the BFD_RELOC_ALPHA_BOH
 		       case in emit_jsrjmp.  See B.4.5.2 of the OpenVMS Linker
@@ -1416,13 +1417,14 @@ load_expression (int targreg,
 		    ptr1 = strstr (symname, "..") + 2;
 		    if (ptr1 > ptr2)
 		      ptr1 = symname;
-		    psymname = (char *) alloca (ptr2 - ptr1 + 1);
+		    psymname = (char *) xmalloc (ptr2 - ptr1 + 1);
 		    memcpy (psymname, ptr1, ptr2 - ptr1);
 		    psymname [ptr2 - ptr1] = 0;
 
 		    gas_assert (insn.nfixups + 1 <= MAX_INSN_FIXUPS);
 		    insn.fixups[insn.nfixups].reloc = BFD_RELOC_ALPHA_LDA;
 		    psym = symbol_find_or_make (psymname);
+		    free (psymname);
 		    symbol_mark_used (psym);
 		    insn.fixups[insn.nfixups].exp.X_op = O_subtract;
 		    insn.fixups[insn.nfixups].exp.X_add_symbol = psym;
@@ -2881,7 +2883,7 @@ emit_jsrjmp (const expressionS *tok,
       char *ensymname;
 
       /* Build the entry name as 'NAME..en'.  */
-      ensymname = (char *) alloca (symlen + 5);
+      ensymname = (char *) xmalloc (symlen + 5);
       memcpy (ensymname, symname, symlen);
       memcpy (ensymname + symlen, "..en", 5);
 
@@ -2903,6 +2905,7 @@ emit_jsrjmp (const expressionS *tok,
       insn.fixups[0].procsym = alpha_evax_proc->symbol;
       insn.nfixups++;
       alpha_linkage_symbol = 0;
+      free (ensymname);
     }
 #endif
 
@@ -6279,11 +6282,12 @@ tc_gen_reloc (asection *sec ATTRIBUTE_UNUSED,
       if (pname_len > 4 && strcmp (pname + pname_len - 4, "..en") == 0)
 	{
 	  symbolS *sym;
-	  char *my_pname = (char *) alloca (pname_len - 4 + 1);
+	  char *my_pname = (char *) xmalloc (pname_len - 4 + 1);
 
 	  memcpy (my_pname, pname, pname_len - 4);
 	  my_pname [pname_len - 4] = 0;
 	  sym = symbol_find (my_pname);
+	  free (my_pname);
 	  if (sym == NULL)
 	    abort ();
 
diff --git a/gas/config/tc-i370.c b/gas/config/tc-i370.c
index bfcc0b3..a20c10c 100644
--- a/gas/config/tc-i370.c
+++ b/gas/config/tc-i370.c
@@ -1867,7 +1867,7 @@ i370_macro (char *str, const struct i370_macro *macro)
     }
 
   /* Put the string together.  */
-  complete = s = alloca (len + 1);
+  complete = s = xmalloc (len + 1);
   format = macro->format;
   while (*format != '\0')
     {
@@ -1885,6 +1885,7 @@ i370_macro (char *str, const struct i370_macro *macro)
 
   /* Assemble the constructed instruction.  */
   md_assemble (complete);
+  free (complete);
 }
 
 /* This routine is called for each instruction to be assembled.  */

-- 
Alan Modra
Australia Development Lab, IBM