[gcc r13-712] testsuite: mallign: Handle word size of 1 byte

[Dimitar Dimitrov <dimitar@gcc.gnu.org>]

https://gcc.gnu.org/g:e6c04ac9fd9c7b5538a6f5f45e5f9dc22954764b

commit r13-712-ge6c04ac9fd9c7b5538a6f5f45e5f9dc22954764b
Author: Dimitar Dimitrov <dimitar@dinux.eu>
Date:   Sun Apr 3 13:41:04 2022 +0300

    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:
---
 gcc/testsuite/gcc.dg/mallign.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/testsuite/gcc.dg/mallign.c b/gcc/testsuite/gcc.dg/mallign.c
index 349cdaa343f..9a18a00c3b0 100644
--- 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;
 }