re PR c/5609 (ICE on named operands in inline assembler)

        PR c/5609
        * stmt.c (resolve_operand_name_1): Take more care with mixed
        named and unnamed operands.

        * gcc.dg/asm-4.c: Add case with an unnamed operand in the middle.

From-SVN: r49560

1 files changed, 14 insertions, 6 deletions

diff --git a/gcc/stmt.c b/gcc/stmt.c
index 99f910a..17b4d0b 100644
--- a/gcc/stmt.c
+++ b/gcc/stmt.c
@@ -2149,15 +2149,23 @@ resolve_operand_name_1 (p, outputs, inputs)
   /* Resolve the name to a number.  */
   for (op = 0, t = outputs; t ; t = TREE_CHAIN (t), op++)
     {
-      const char *c = IDENTIFIER_POINTER (TREE_PURPOSE (TREE_PURPOSE (t)));
-      if (strncmp (c, p + 1, len) == 0 && c[len] == '\0')
-	goto found;
+      tree id = TREE_PURPOSE (TREE_PURPOSE (t));
+      if (id)
+	{
+	  const char *c = IDENTIFIER_POINTER (id);
+	  if (strncmp (c, p + 1, len) == 0 && c[len] == '\0')
+	    goto found;
+	}
     }
   for (t = inputs; t ; t = TREE_CHAIN (t), op++)
     {
-      const char *c = IDENTIFIER_POINTER (TREE_PURPOSE (TREE_PURPOSE (t)));
-      if (strncmp (c, p + 1, len) == 0 && c[len] == '\0')
-	goto found;
+      tree id = TREE_PURPOSE (TREE_PURPOSE (t));
+      if (id)
+	{
+	  const char *c = IDENTIFIER_POINTER (id);
+	  if (strncmp (c, p + 1, len) == 0 && c[len] == '\0')
+	    goto found;
+	}
     }
 
   *q = '\0';