X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=compat%2Fcompat.h;h=b2e27368cf0690701c81b692fc0f9dce4c7216f4;hp=173ef680ceb8d9d9d67833fcd9db6e10ea4382aa;hb=bbdbc838547667c880ee38d017f751ebe5da49ab;hpb=8cbb5114a20c1217f23977fd5edca99a0b7a2955

diff --git a/compat/compat.h b/compat/compat.h
index 173ef680..b2e27368 100644
--- a/compat/compat.h
+++ b/compat/compat.h
@@ -26,6 +26,10 @@
 #ifndef NOTMUCH_COMPAT_H
 #define NOTMUCH_COMPAT_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #if !HAVE_GETLINE
 #include <stdio.h>
 #include <unistd.h>
@@ -42,4 +46,16 @@ getdelim (char **lineptr, size_t *n, int delimiter, FILE *fp);
 char* strcasestr(const char *haystack, const char *needle);
 #endif /* !HAVE_STRCASESTR */
 
+/* Silence gcc warnings about unused results.  These warnings exist
+ * for a reason; any use of this needs to be justified. */
+#ifdef __GNUC__
+#define IGNORE_RESULT(x) ({ __typeof__(x) __z = (x); (void)(__z = __z); })
+#else /* !__GNUC__ */
+#define IGNORE_RESULT(x) x
+#endif /* __GNUC__ */
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* NOTMUCH_COMPAT_H */