util: Add attribute warn_unused_result to allocation functions

Add the warn_unused_result GCC function attribute to all allocation
functions in xmalloc.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

1 files changed, 1 insertions, 0 deletions

diff --git a/compiler.h b/compiler.h
index a6bf3a6..3559050 100644
--- a/compiler.h
+++ b/compiler.h
@@ -21,6 +21,7 @@
 
 #ifdef __GNUC__
 # define __noreturn		__attribute__((noreturn))
+# define __warn_unused_result	__attribute__((warn_unused_result))
 # define __packed		__attribute__((packed))
 # define __unused		__attribute__((unused))
 # ifndef offsetof