Rather print the backtrace before the useful message

include/starpu_util.h

@@ -110,7 +110,7 @@ extern "C"
 #    define STARPU_ASSERT_MSG(x, msg, ...)	do { if (STARPU_UNLIKELY(!(x))) { fprintf(stderr, "\n[starpu][%s][assert failure] " msg "\n\n", __starpu_func__, ## __VA_ARGS__); *(int*)NULL = 0; }} while(0)
 #  else
 #    define STARPU_ASSERT(x)		do { if (STARPU_UNLIKELY(!(x))) { STARPU_DUMP_BACKTRACE(); assert(x); } } while (0)
-#    define STARPU_ASSERT_MSG(x, msg, ...)	do { if (STARPU_UNLIKELY(!(x))) { fprintf(stderr, "\n[starpu][%s][assert failure] " msg "\n\n", __starpu_func__, ## __VA_ARGS__); STARPU_DUMP_BACKTRACE(); assert(x); } } while(0)
+#    define STARPU_ASSERT_MSG(x, msg, ...)	do { if (STARPU_UNLIKELY(!(x))) { STARPU_DUMP_BACKTRACE(); fprintf(stderr, "\n[starpu][%s][assert failure] " msg "\n\n", __starpu_func__, ## __VA_ARGS__); assert(x); } } while(0)
 
 #  endif
 #endif