[core] log_failed_assert() __attribute__((cold))

src/buffer.h

@@ -173,12 +173,9 @@ static inline void buffer_append_slash(buffer *b); /* append '/' no non-empty st
 #define CONST_BUF_LEN(x) ((x) ? (x)->ptr : NULL), buffer_string_length(x)
 
 
-#ifdef __GNUC__
-# define LI_NORETURN __attribute__((noreturn))
-#else
-# define LI_NORETURN
-#endif
+#define LI_NORETURN __attribute_noreturn__
 
+__attribute_cold__
 void log_failed_assert(const char *filename, unsigned int line, const char *msg) LI_NORETURN;
 #define force_assert(x) do { if (!(x)) log_failed_assert(__FILE__, __LINE__, "assertion failed: " #x); } while(0)
 #define SEGFAULT() log_failed_assert(__FILE__, __LINE__, "aborted");

src/first.h

@@ -55,4 +55,43 @@
 
 #define UNUSED(x) ( (void)(x) )
 
+
+#ifndef __has_attribute       /* clang */
+#define __has_attribute(x) 0
+#endif
+
+#ifdef __GNUC__
+#ifndef __GNUC_PREREQ
+#  ifdef __GNUC_PREREQ__
+#    define __GNUC_PREREQ __GNUC_PREREQ__
+#  elif defined __GNUC__ && defined __GNUC_MINOR__
+#    define __GNUC_PREREQ(maj, min) \
+       ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+#  else
+#    define __GNUC_PREREQ(maj, min) 0
+#  endif
+#endif
+#else
+#define __GNUC_PREREQ(maj,min) 0
+#endif
+
+#ifndef __attribute_cold__
+#if __has_attribute(cold) \
+ || __GNUC_PREREQ(4,3)
+#define __attribute_cold__  __attribute__((__cold__))
+#else
+#define __attribute_cold__
+#endif
+#endif
+
+#ifndef __attribute_noreturn__
+#if __has_attribute(noreturn) \
+ || __GNUC_PREREQ(2,5)
+#define __attribute_noreturn__  __attribute__((__noreturn__))
+#else
+#define __attribute_noreturn__
+#endif
+#endif
+
+
 #endif