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.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@19236 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 8 insertions, 3 deletions

diff --git a/gcc/reg-stack.c b/gcc/reg-stack.c
index ab3ded66eb4..c781d0d2926 100644
--- 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)