[debug.h] Introduce a static assert using the array with negative size trick
It is inspired by the COMPILE_ASSERT from WebKit and is using the well
known trick to get compile time assertions.
diff --git a/include/openbsc/debug.h b/include/openbsc/debug.h
index 55a06d1..06c9edd 100644
--- a/include/openbsc/debug.h
+++ b/include/openbsc/debug.h
@@ -19,6 +19,8 @@
#define DEBUGP(xss, fmt, args...)
#endif
+#define static_assert(exp, name) typedef int dummy##name [(exp) ? 1 : -1];
+
void debugp(unsigned int subsys, char *file, int line, const char *format, ...);
void debug_parse_category_mask(const char* mask);
void debug_use_color(int use_color);