Fix last commit

util.h

@@ -0,0 +1,23 @@
+#ifndef INCLUDED_UTIL_H
+#define INCLUDED_UTIL_H
+
+#include <stddef.h>
+
+#if __has_attribute(format)
+#define PRINTF_LIKE(i, j) __attribute__((format(printf, i, j)))
+#else
+#define PRINTF_LIKE(i, j)
+#endif
+
+void *realloc_safe(void *oldptr, size_t size);
+void *malloc_safe(size_t size);
+
+// asprintf is not POSIX
+PRINTF_LIKE(2, 3)
+int alloc_sprintf(char *restrict *restrict out, const char *restrict fmt, ...);
+
+PRINTF_LIKE(1, 2)
+void log_error(const char *restrict fmt, ...);
+void log_errno(const char *detail);
+
+#endif