feat: include <assert.h>

3 files changed, 17 insertions, 7 deletions

diff --git a/include/assert.h b/include/assert.h
new file mode 100644
index 0000000..aac81d7
--- /dev/null
+++ b/include/assert.h
@@ -0,0 +1,16 @@
+#ifndef __DUCC_BUILTIN___ASSERT_H__
+#define __DUCC_BUILTIN___ASSERT_H__
+
+#ifdef NDEBUG
+#define assert(x) ((void)0)
+#else
+#define assert(x) \
+    do { \
+        if (!(x)) { \
+            fprintf(stderr, "%s:%d: assertion failed.\n", __FILE__, __LINE__); \
+            abort(); \
+        } \
+    } while (0)
+#endif
+
+#endif
diff --git a/src/preprocess.c b/src/preprocess.c
index a32e0e5..34c2fe0 100644
--- a/src/preprocess.c
+++ b/src/preprocess.c
@@ -1,4 +1,5 @@
 #include "preprocess.h"
+#include <assert.h>
 #include <ctype.h>
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/src/std.h b/src/std.h
index 140eea8..2e4dbb1 100644
--- a/src/std.h
+++ b/src/std.h
@@ -6,13 +6,6 @@
 // TODO: <stdlib.h>
 int mkstemps(char*, int);
 
-#define assert(x) \
-    do { \
-        if (!(x)) { \
-            fatal_error("%s:%d: assertion failed", __FILE__, __LINE__); \
-        } \
-    } while (0)
-
 #define F_OK 0
 #define R_OK 4
 int access(const char*, int);