Use xmalloc in tst-setcontext-fpscr.c (bug 19668).

Bug 19668 reports an unchecked malloc call in the test
sysdeps/powerpc/fpu/tst-setcontext-fpscr.c.  This patch makes that
test use xmalloc.  It does not otherwise move this test to the
support/ infrastructure or support/test-driver.c; the test has various
uses of exit and _exit on error cases, and uses atexit, and while I
think those things would all still work in the context of
test-driver.c, it's not an immediately obvious conversion the way it
would be for many tests that don't use test-driver.c.

Tested for powerpc.

	[BZ #19668]
	* sysdeps/powerpc/fpu/tst-setcontext-fpscr.c: Include
	<support/support.h>.  Do not include <malloc.h>.
	(query_auxv): Use xmalloc instead of malloc.

2 files changed, 7 insertions, 2 deletions

diff --git a/ChangeLog b/ChangeLog
index c9734c46b6..ca14746ce6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2018-02-06  Joseph Myers  <joseph@codesourcery.com>
 
+	[BZ #19668]
+	* sysdeps/powerpc/fpu/tst-setcontext-fpscr.c: Include
+	<support/support.h>.  Do not include <malloc.h>.
+	(query_auxv): Use xmalloc instead of malloc.
+
 	[BZ #14553]
 	* posix/sys/types.h (loff_t): Only define for [__USE_MISC].
 	* sysdeps/unix/sysv/linux/sys/quota.h (dqoff): Use __loff_t
diff --git a/sysdeps/powerpc/fpu/tst-setcontext-fpscr.c b/sysdeps/powerpc/fpu/tst-setcontext-fpscr.c
index c64ca88a85..4b25ec3e40 100644
--- a/sysdeps/powerpc/fpu/tst-setcontext-fpscr.c
+++ b/sysdeps/powerpc/fpu/tst-setcontext-fpscr.c
@@ -23,11 +23,11 @@
 #include <string.h>
 #include <ucontext.h>
 #include <unistd.h>
-#include <malloc.h>
 #include <link.h>
 #include <elf.h>
 #include <fpu_control.h>
 #include <sys/auxv.h>
+#include <support/support.h>
 
 static ucontext_t ctx[3];
 
@@ -59,7 +59,7 @@ ElfW(Addr) query_auxv(int type)
 	  perror("Error opening file for reading");
 	  return 0;
 	}
-      auxv = (ElfW(auxv_t) *)malloc(getpagesize());
+      auxv = xmalloc (getpagesize ());
 
       do
 	{