fix forced inlining when -O0

include/vector.h

@@ -12,6 +12,12 @@ typedef struct {
 	void* ptr;
 } vec_t;
 
+#ifdef DEBUG
+#define _FORCE_INLINE static inline __attribute__((gnu_inline))
+#else
+#define _FORCE_INLINE extern inline __attribute__((gnu_inline))
+#endif
+
 #define VEC_DEFAULT_CAP 16
 
 vec_t vec_new_with_cap(size_t elem, size_t cap);
@@ -20,7 +26,7 @@ bool vec_pop(vec_t* restrict self, void* restrict item);
 void* vec_index(const vec_t* restrict self, size_t i);
 vec_t vec_clone(const vec_t* restrict self);
 
-__attribute__((gnu_inline)) inline extern vec_t vec_new(size_t elem) { return vec_new_with_cap(elem, VEC_DEFAULT_CAP); }
+_FORCE_INLINE vec_t vec_new(size_t elem) { return vec_new_with_cap(elem, VEC_DEFAULT_CAP); }
-__attribute__((gnu_inline)) inline extern void vec_free(vec_t v) { free(v.ptr); }
+_FORCE_INLINE void vec_free(vec_t v) { free(v.ptr); }
 
 #endif /* _VECTOR_H */

src/main.c

@@ -3,6 +3,7 @@
 #include <string.h>
 
 #include <map.h>
+#include <vector.h>
 
 static const char* _prog_name = "fcmp";
 
@@ -13,14 +14,14 @@ static const char* _prog_name = "fcmp";
 #define dprintf(fmt, ...)
 #endif
 
-__attribute__((noreturn)) static void usage() 
+__attribute__((noreturn, noinline)) void usage() 
 {
 	fprintf(stderr, "fcmp: compare files for identity\n");
 	fprintf(stderr, "usage: %s <files...>\n", _prog_name);
 	exit(-1);
 }
 
-__attribute__((always_inline)) static inline const void* die_if_null(const void* ptr)
+_FORCE_INLINE const void* die_with_usage_if_null(const void* ptr)
 {
 	if (!ptr) usage();
 	else return ptr;
@@ -62,11 +63,11 @@ int main(int argc, char** argv)
 	const int nrest = argc-2;
 	if (nrest==0) usage();
 	dprintf("There are %d extra files to chk", nrest);
-	const char* f1 = die_if_null(argv[1]);
+	const char* f1 = die_with_usage_if_null(argv[1]);
 	const char* frest[nrest];
 
 	for (register int i=0;i<nrest;i++) {
-		frest[i] = die_if_null(argv[2+i]);
+		frest[i] = die_with_usage_if_null(argv[2+i]);
 		dprintf("frest[%d] = \"%s\"", i, frest[i]);
 	}
 

src/vector.c

@@ -4,7 +4,7 @@
 
 #include <vector.h>
 
-__attribute__((gnu_inline)) inline static void* die_if_null(void* ptr)
+_FORCE_INLINE void* die_if_null(void* ptr)
 {
 	if (!ptr) abort();
 	return ptr;