Patch to fix x86 gcc.dg/980226-1.c failure report by Manfred Hollstein.

	* reg-stack.c (constrain_asm_operands): Set n_alternatives to zero if
	no operands.

From-SVN: r19236

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b9de0f9afdf8fda8e824956d217e36f6b1ab66ab..d4ef09cfaa52f4e8b01f731e0dc9e20c1951a959 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+Thu Apr 16 13:45:51 1998  Jim Wilson  <wilson@cygnus.com>
+
+       * reg-stack.c (constrain_asm_operands): Set n_alternatives to zero if
+       no operands.
+
 Wed Apr 15 11:33:09 1998  Alexandre Petit-Bianco  <apbianco@sendai.cygnus.com>
 
         * tree.c (build_expr_wfl): Use NULL_TREE if the file name is NULL.

diff --git a/gcc/reg-stack.c b/gcc/reg-stack.c
index ab3ded66eb4a47bb9c37e3a614232450f1831167..c781d0d292674bb7b40e656fec963731878a69cd 100644 (file)
--- a/gcc/reg-stack.c
+++ b/gcc/reg-stack.c
@@ -637,9 +637,14 @@ constrain_asm_operands (n_operands, operands, operand_constraints,
      already guaranteed that all operands have the same number of
      alternatives.  */
 
-  n_alternatives = 1;
-  for (q = constraints[0]; *q; q++)
-    n_alternatives += (*q == ',');
+  if (n_operands == 0)
+    n_alternatives = 0;
+  else
+    {
+      n_alternatives = 1;
+      for (q = constraints[0]; *q; q++)
+       n_alternatives += (*q == ',');
+    }
 
   this_alternative = 0;
   while (this_alternative < n_alternatives)