Silence -Wunused-but-set-variable error with clang

[babeltrace.git] / src / common / macros.h

diff --git a/src/common/macros.h b/src/common/macros.h
index 34ac393f76bda366a8ad142ff4d568ba3465bb25..6a3e061d5f17464222d85701e96a0cbf6e871121 100644 (file)
--- a/src/common/macros.h
+++ b/src/common/macros.h
@@ -81,6 +81,17 @@ extern "C" {
        ((void) sizeof((void) (_expr1), (void) (_expr2),                \
                (void) (_expr3), (void) (_expr4), (void) (_expr5), 0))
 
+#if defined __clang__
+#  if __has_warning("-Wunused-but-set-variable")
+#    define BT_DIAG_IGNORE_UNUSED_BUT_SET_VARIABLE \
+       _Pragma("GCC diagnostic ignored \"-Wunused-but-set-variable\"")
+#  endif
+#endif
+
+#if !defined BT_DIAG_IGNORE_UNUSED_BUT_SET_VARIABLE
+#  define BT_DIAG_IGNORE_UNUSED_BUT_SET_VARIABLE
+#endif
+
 #ifdef __cplusplus
 }
 #endif