utils: introduce assert_static()

assert_static() will help us to find false asserts in compile time. Of course it only works in case of expressions which can be evaluated compile time. It cannot be used in global scope.

utils: introduce assert_static()
457a6f4b · Laszlo Ashin · 0bad8406 · 457a6f4b
Commit 457a6f4b authored Nov 22, 2008 by Laszlo Ashin
Show whitespace changes
Inline Side-by-side

Showing with 9 additions and 0 deletions

utils.h src/utils.h +9 -0

No files found.
--- a/src/utils.h
+++ b/src/utils.h
@@ -29,6 +29,15 @@

 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))

+#ifndef assert_static
+/* Compile time assertion developed by Ralf Holly */
+/* http://pera-software.com/articles/compile-time-assertions.pdf */
+#define assert_static(e) \
+	do { \
+		enum { assert_static__ = 1/(e) }; \
+	} while (0)
+#endif /* !assert_static */
+
 char *myFgets(char *buffer, int bufferSize, FILE * fp);

 void stripReturnChar(char *string);