fix strncmp

1 files changed, 10 insertions, 6 deletions

diff --git a/attocc.c b/attocc.c
index 1389f9d..bb6b248 100644
--- a/attocc.c
+++ b/attocc.c
@@ -16,6 +16,7 @@
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 #include <fcntl.h>
+#include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -26,6 +27,8 @@
 #define DEBUG
 #endif
 
+#define TRAP kill(getpid(), SIGTRAP);
+
 const int NUM_KEYWORDS = 32;
 static char *KEYWORDS[] = {
     "auto",     "break",  "case",    "char",   "const",    "continue",
@@ -273,17 +276,19 @@ void *memcpy(void *dest, const void *src, unsigned long size) {
 
 // not to specification but this program only needs to check equality
 int strncmp(const char *a, const char *b, unsigned long len) {
-  while (len--)
-    if (*a++ != *b++)
-      return 1;
+  while (len--) {
+    if (*a != *b)
+      return *a - *b;
+    a++;
+    b++;
+  }
   return 0;
 }
-
 unsigned long strlen(const char *s) {
   int len = 0;
   while (*s++)
     len++;
-  return len - 1;
+  return len;
 }
 char *strdup(const char *s) {
   int len = strlen(s);
@@ -316,7 +321,6 @@ struct token *tokenize(char *source) {
   struct token *tokens = NULL;
   while (*p) {
     unsigned long remaining = end - p;
-    printf("%li\n", p - source);
 
     //* whitespace
     if (p[0] == ' ' || p[0] == '\t' || p[0] == '\n') {