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(record_label_references): Check for undefined label.

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From-SVN: r11454
This commit is contained in:
Richard Kenner 1996-03-05 09:32:16 -05:00
parent 8d95e9ad11
commit 13684373cc
1 changed files with 4 additions and 0 deletions
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4
gcc/reg-stack.c
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@ -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);