configure: enable -Wsuggest-attribute=format

[lttng-tools.git] / src / common / macros.h

diff --git a/src/common/macros.h b/src/common/macros.h
index 74f9096c7cf3b83fded3864bc76d0b0d1e0c5fb0..99d4fb31f600fc2776348623e1821b0f76fba1b9 100644 (file)
--- a/src/common/macros.h
+++ b/src/common/macros.h
@@ -75,6 +75,24 @@ void *zmalloc(size_t len)
 
 #define ASSERT_LOCKED(lock) LTTNG_ASSERT(pthread_mutex_trylock(&lock))
 
+/* Attribute suitable to tag functions as having printf()-like arguments. */
+#define ATTR_FORMAT_PRINTF(_string_index, _first_to_check) \
+       __attribute__((format(printf, _string_index, _first_to_check)))
+
+/* Macros used to ignore specific compiler diagnostics. */
+
+#define DIAGNOSTIC_PUSH _Pragma("GCC diagnostic push")
+#define DIAGNOSTIC_POP _Pragma("GCC diagnostic pop")
+
+#if defined(__clang__)
+  /* Clang */
+# define DIAGNOSTIC_IGNORE_SUGGEST_ATTRIBUTE_FORMAT
+#else
+  /* GCC */
+# define DIAGNOSTIC_IGNORE_SUGGEST_ATTRIBUTE_FORMAT \
+       _Pragma("GCC diagnostic ignored \"-Wsuggest-attribute=format\"")
+#endif
+
 /*
  * lttng_strncpy returns 0 on success, or nonzero on failure.
  * It checks that the @src string fits into @dst_len before performing