[gcc r12-4691] libgomp.oacc-c-c++-common/loop-gwv-2.c: Use __builtin_alloca

[Tobias Burnus <burnus@gcc.gnu.org>]

https://gcc.gnu.org/g:72dc270be793f159a3a038bef41542d85550b331

commit r12-4691-g72dc270be793f159a3a038bef41542d85550b331
Author: Tobias Burnus <tobias@codesourcery.com>
Date:   Mon Oct 25 20:40:13 2021 +0200

    libgomp.oacc-c-c++-common/loop-gwv-2.c: Use __builtin_alloca
    
    Some systems do not have <alloca.h> but provide alloca differently, e.g.
    via stdlib.h. Do it like other testcases do and use __builtin_alloca.
    
    libgomp/ChangeLog:
    
            PR testsuite/102910
            * testsuite/libgomp.oacc-c-c++-common/loop-gwv-2.c: Use __builtin_alloca
            instead of #include <alloca.h> + alloca.

Diff:
---
 libgomp/testsuite/libgomp.oacc-c-c++-common/loop-gwv-2.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/libgomp/testsuite/libgomp.oacc-c-c++-common/loop-gwv-2.c b/libgomp/testsuite/libgomp.oacc-c-c++-common/loop-gwv-2.c
index cb3878b8d4e..e73ed6064eb 100644
--- a/libgomp/testsuite/libgomp.oacc-c-c++-common/loop-gwv-2.c
+++ b/libgomp/testsuite/libgomp.oacc-c-c++-common/loop-gwv-2.c
@@ -6,7 +6,6 @@
 
 #include <stdio.h>
 #include <openacc.h>
-#include <alloca.h>
 #include <string.h>
 #include <gomp-constants.h>
 #include <stdlib.h>
@@ -78,9 +77,9 @@ int main ()
     vectorsize = __builtin_goacc_parlevel_size (GOMP_DIM_VECTOR);
   }
 
-  gangdist = (int *) alloca (gangsize * sizeof (int));
-  workerdist = (int *) alloca (workersize * sizeof (int));
-  vectordist = (int *) alloca (vectorsize * sizeof (int));
+  gangdist = (int *) __builtin_alloca (gangsize * sizeof (int));
+  workerdist = (int *) __builtin_alloca (workersize * sizeof (int));
+  vectordist = (int *) __builtin_alloca (vectorsize * sizeof (int));
   memset (gangdist, 0, gangsize * sizeof (int));
   memset (workerdist, 0, workersize * sizeof (int));
   memset (vectordist, 0, vectorsize * sizeof (int));