@@@ tvec doc wip

[mLib] / utils / macros.h

diff --git a/utils/macros.h b/utils/macros.h
index a5263e19ed319ef09d795284a52370706450e28b..95d0ddba93d9105dc7d43af99b0bffa5ef430534 100644 (file)
--- a/utils/macros.h
+++ b/utils/macros.h
@@ -51,12 +51,14 @@
 #define GLUE(x, y) MLIB__GLUE(x, y)
 
 #ifdef static_assert
-#  define STATIC_ASSERT(cond, msg) static_assert(cond, msg)
+#  define STATIC_ASSERT(cond, msg) static_assert(!!(cond), msg)
 #else
 #  define STATIC_ASSERT(cond, msg)                                     \
        IGNORABLE extern char static_assert_failed[2*!!(cond) - 1]
 #endif
 
+#define COMMA ,
+
 /*----- String and character hacks ----------------------------------------*/
 
 #define CTYPE_HACK(func, ch) (func((unsigned char)(ch)))
@@ -94,6 +96,10 @@
 #  define IGNORABLE __attribute__((__unused__))
 #endif
 
+#if GCC_VERSION_P(3, 4) || CLANG_VERSION_P(3, 3)
+#  define MUST_CHECK __attribute__((__warn_unused_result__))
+#endif
+
 #if GCC_VERSION_P(4, 5) || CLANG_VERSION_P(3, 3)
 #  define DEPRECATED(msg) __attribute__((__deprecated__(msg)))
 #elif GCC_VERSION_P(3, 1)
@@ -104,6 +110,12 @@
 #  define EXECL_LIKE(ntrail) __attribute__((__sentinel__(ntrail)))
 #endif
 
+#if GCC_VERSION_P(2, 7) || CLANG_VERSION_P(0, 0)
+#  define LAUNDER(x)                                                   \
+       ({ __typeof__(x) _y; __asm__("" : "=g"(_y) : "0"(x)); _y; })
+#  define RELAX do __asm__ __volatile__("" ::: "memory"); while (0)
+#endif
+
 #if CLANG_VERSION_P(3, 3)
 
 #  define MLIB__PRAGMA_HACK(x) _Pragma(#x)
@@ -121,7 +133,9 @@
 #  define MUFFLE_WARNINGS_STMT(warns, body)                            \
        do { MLIB__MUFFLE_WARNINGS(warns, body) } while (0)
 
-#elif GCC_VERSION_P(4, 6)
+#endif
+
+#if GCC_VERSION_P(4, 6)
 
    /* --- Diagnostic suppression in GCC: a tale of woe --- *
     *
@@ -223,6 +237,18 @@
 #  define IGNORABLE
 #endif
 
+#ifndef MUST_CHECK
+#  define MUST_CHECK
+#endif
+
+#ifndef LAUNDER
+#  define LAUNDER
+#endif
+
+#ifndef RELAX
+#  define RELAX
+#endif
+
 #ifndef GCC_WARNING
 #  define GCC_WARNING(warn)
 #endif