testsuite: mallign: Handle word size of 1 byte

This patch fixes a spurious warning for the pru-unknown-elf target:
  gcc/testsuite/gcc.dg/mallign.c:12:27: warning: ignoring return value of 'malloc' declared with attribute 'warn_unused_result' [-Wunused-result]

For 8-bit targets the resulting mask ignores all bits in the value
returned by malloc.  Fix by first checking the target word size.

gcc/testsuite/ChangeLog:

	* gcc.dg/mallign.c: Skip check if sizeof(word)==1.

Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>

diff --git a/gcc/testsuite/gcc.dg/mallign.c b/gcc/testsuite/gcc.dg/mallign.c
index 349cdaa..9a18a00 100644 (file)
--- a/gcc/testsuite/gcc.dg/mallign.c
+++ b/gcc/testsuite/gcc.dg/mallign.c
@@ -9,7 +9,7 @@ typedef int word __attribute__((mode(word)));
 
 int main()
 {
-    if ((__UINTPTR_TYPE__)malloc (1) & (sizeof(word)-1))
+    if ((sizeof(word)>1) && ((__UINTPTR_TYPE__)malloc (1) & (sizeof(word)-1)))
        abort ();
     return 0;
 }