Fix valgrind errors

v0/test.c

@@ -9,7 +9,7 @@
 #include <stdlib.h>
 
 static jmp_buf s_testJmp;
-static const char* s_failMsg;
+static const char* s_failMsg = NULL;
 static char* s_logOutput = NULL;
 static const char* s_currentTestName = NULL;
 static char* s_testSource = NULL;
@@ -75,8 +75,8 @@ TokenStream* test_get_tokenstream(void) {
         s_testSource = read_file_content(filepath);
         if (!s_testSource) {
             puts(filepath);
-            fail("could not read test source file");
             free(filepath);
+            fail("could not read test source file");
             return NULL;
         }
         s_currentTokenStream = tokenstream_open(filepath, s_testSource);
@@ -108,24 +108,29 @@ void assert_log_file(const char* msg) {
     if (generate && strcmp(generate, "1") == 0) {
         FILE* f = fopen(filepath, "w");
         if (!f) {
+            free(filepath);
             fail("could not open golden file for writing");
             return;
         }
         fputs(s_logOutput ? s_logOutput : "", f);
         fclose(f);
+        free(filepath);
         return;
     }
 
     content = read_file_content(filepath);
     if (!content) {
-        fail("could not open golden file for reading");
         free(filepath);
+        fail("could not open golden file for reading");
         return;
     }
 
-    assert_str(content, s_logOutput, msg);
+    bool match = strcmp(content, s_logOutput ? s_logOutput : "") == 0;
     free(content);
     free(filepath);
+    if (!match) {
+        fail(msg);
+    }
 }
 
 void assert_int(int expected, int actual, const char* msg) {
@@ -245,7 +250,7 @@ int main(int argc, char** argv) {
             printf(" [OK]\n");
             s_greenTests++;
         } else {
-            printf(" [FAIL]: %s\n", s_failMsg ? s_failMsg : "");
+            printf(" [FAIL]: %s\n", s_failMsg[0] ? s_failMsg : "");
             failedTests[failedCount++] = s_tests[i].name;
         }