diff --git a/ChangeLog b/ChangeLog
index 4cb1915d..b5e80278 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2010-03-25  Akim Demaille  <demaille@gostai.com>
+
+	tests: fix 250: parse.error=verbose overflow.
+	* tests/regression.at (parse.error=verbose overflow): Avoid the
+	double inclusion of stdlib.h as it triggers hard errors.
+
 2010-03-23  Joel E. Denny  <jdenny@ces.clemson.edu>
 
 	portability: fix for BSD make.
diff --git a/tests/regression.at b/tests/regression.at
index ca6ba1dd..4998d370 100644
--- a/tests/regression.at
+++ b/tests/regression.at
@@ -1374,9 +1374,12 @@ AT_DATA_GRAMMAR([input.y],
      large enough to overflow size_t.  */
   #define YYSIZE_T unsigned char
 
-  /* Bring in malloc so yacc.c doesn't try to provide a malloc prototype
-     using our YYSIZE_T.  */
+  /* Bring in malloc and set _STDLIB_H so yacc.c doesn't try to
+     provide a malloc prototype using our YYSIZE_T.  */
   #include <stdlib.h>
+  #ifndef _STDLIB_H
+  # define _STDLIB_H 1
+  #endif
 
   /* Max depth is usually much smaller than YYSTACK_ALLOC_MAXIMUM, and
      we don't want gcc to warn everywhere this constant would be too big