macro-fundamental: add _nonnull_if_nonzero_

Introduced in gcc 15:
https://github.com/gcc-mirror/gcc/commit/19fe55c4801de50deee03b333e94d007aae222e3

diff --git a/src/fundamental/macro-fundamental.h b/src/fundamental/macro-fundamental.h
index 5eb31cd74283d623ac971721dd652906a66e1028..78a87d150b5c33f3eaa2d6027af05e692cf2f6bc 100644 (file)
--- a/src/fundamental/macro-fundamental.h
+++ b/src/fundamental/macro-fundamental.h
@@ -112,6 +112,12 @@
 #  define _fallthrough_ __attribute__((__fallthrough__))
 #endif
 
+#if __GNUC__ >= 15
+#  define _nonnull_if_nonzero_(p, n) __attribute__((nonnull_if_nonzero(p, n)))
+#else
+#  define _nonnull_if_nonzero_(p, n)
+#endif
+
 #define XSTRINGIFY(x) #x
 #define STRINGIFY(x) XSTRINGIFY(x)