diff --git a/ChangeLog b/ChangeLog
index eec6aa99..3723d6e4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2001-11-27  Paul Eggert  <eggert@twinsun.com>
+
+	* src/bison.simple (YYSTACK_REALLOC): Fix typo that caused us to
+	use alloca when we didn't want to, and vice versa.
+
 2001-11-27  Marc Autret  <autret_m@epita.fr>
 
 	* src/muscle_tab.c (muscle_init): Remove 'verbose' muscle initialization.
diff --git a/src/bison.simple b/src/bison.simple
index 4a3ca508..455c9d87 100644
--- a/src/bison.simple
+++ b/src/bison.simple
@@ -106,6 +106,14 @@
    If WHAT was malloc'ed (not the original automatic ARRAY), free it. */
 #if YYSTACK_USE_ALLOCA
 # define YYSTACK_REALLOC(Type, What, Array)				\
+do {									\
+  Type *old = What;							\
+  What = (Type *) alloca (yystacksize * sizeof (Type));			\
+  __yy_memcpy ((char *) What, (char *) old,				\
+	       (size) * (unsigned int) sizeof (Type));			\
+} while (0)
+#else
+# define YYSTACK_REALLOC(Type, What, Array)				\
 do {									\
   Type *old = What;							\
   What = (Type *) malloc (yystacksize * sizeof (Type));			\
@@ -115,14 +123,6 @@ do {									\
   if (old != Array)							\
     free (old);								\
 } while (0)
-#else
-# define YYSTACK_REALLOC(Type, What, Array)				\
-do {									\
-  Type *old = What;							\
-  What = (Type *) alloca (yystacksize * sizeof (Type));			\
-  __yy_memcpy ((char *) What, (char *) old,				\
-	       (size) * (unsigned int) sizeof (Type));			\
-} while (0)
 #endif
 
 #define YYBISON	1	/* Identify Bison output.  */