(compare_strings): Check for null pointers.

From-SVN: r6014

(compare_strings): Check for null pointers.
From-SVN: r6014
6c8747b1 · Richard Stallman · c35a847e · 6c8747b1
Commit 6c8747b1 authored Nov 05, 1993 by Richard Stallman
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gcc/objc/hash.h
+6 -1

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--- a/gcc/objc/hash.h
+++ b/gcc/objc/hash.h
@@ -193,7 +193,12 @@ compare_ptrs (const void *k1, const void *k2)
 static inline int 
 compare_strings (const void *k1, const void *k2)
 {
-  return !strcmp (k1, k2);
+  if (k1 == k2)
+    return 1;
+  else if (k1 == 0 || k2 == 0)
+    return 0;
+  else
+    return !strcmp (k1, k2);
 }