(record_label_references): Check for undefined label.

From-SVN: r11454
1996-03-05 09:32:16 -05:00 · 1996-03-05 09:32:16 -05:00 · 13684373cc
parent 8d95e9ad11
commit 13684373cc
1 changed files with 4 additions and 0 deletions
--- a/gcc/reg-stack.c
+++ b/gcc/reg-stack.c
@ -483,6 +483,10 @@ record_label_references (insn, pat)
      if (GET_CODE (label) != CODE_LABEL)
 	abort ();

+      /* If this is an undefined label, LABEL_REFS (label) contains garbage. */
+      if (INSN_UID (label) == 0)
+	return;
+
      /* Don't make a duplicate in the code_label's chain. */

      for (ref = LABEL_REFS (label);