* c-typeck.c (comptypes): Exit early on NULL input.

From-SVN: r17347

* c-typeck.c (comptypes): Exit early on NULL input.
From-SVN: r17347
8d47dfc5 · Richard Henderson · Jeff Law · c995fea1 · 8d47dfc5 · 8d47dfc5
Commit 8d47dfc5 authored Jan 13, 1998 by Richard Henderson Committed by Jeff Law Jan 13, 1998
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gcc/ChangeLog
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gcc/c-typeck.c
+2 -1

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
 Tue Jan 13 22:39:40 1998  Richard Henderson  (rth@cygnus.com)

+	* c-typeck.c (comptypes): Exit early on NULL input.
+
 	* haifa-sched.c (schedule_insns): Correctly remove inter-block
 	dependencies after reload.


--- a/gcc/c-typeck.c
+++ b/gcc/c-typeck.c
@@ -441,7 +441,8 @@ comptypes (type1, type2)

  /* Suppress errors caused by previously reported errors.  */

-  if (t1 == t2 || TREE_CODE (t1) == ERROR_MARK || TREE_CODE (t2) == ERROR_MARK)
+  if (t1 == t2 || !t1 || !t2
+      || TREE_CODE (t1) == ERROR_MARK || TREE_CODE (t2) == ERROR_MARK)
    return 1;

  /* Treat an enum type as the integer type of the same width and