[testsuite] Require alloca in gcc.dg/pr83844.c

2018-02-07  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/pr83844.c: Require effective target alloca.

From-SVN: r257447

gcc/testsuite/ChangeLog

 2018-02-07  Tom de Vries  <tom@codesourcery.com>
 
+	* gcc.dg/pr83844.c: Require effective target alloca.
+
+2018-02-07  Tom de Vries  <tom@codesourcery.com>
+
 	* gcc.dg/torture/pr83055.c: Require effective target global_constructor.
 
 2018-02-07  H.J. Lu  <hongjiu.lu@intel.com>

gcc/testsuite/gcc.dg/pr83844.c

 /* PR c/83844 */
 /* { dg-do compile { target int32plus } } */
 /* { dg-options "-O0 -Wall" } */
+/* { dg-require-effective-target alloca } */
 
 typedef unsigned long long __u64 __attribute__((aligned(4),warn_if_not_aligned(8)));
 void bar (void *, void *, void *);