add debug

colinleroy · Jan 30, 2024 · 6564e4c · 6564e4c
1 parent 8123fcb
commit 6564e4c
Showing 1 changed file with 17 additions and 1 deletion.
diff --git a/test/isequal.c b/test/isequal.c
@@ -436,9 +436,18 @@ static int comparefileswithwildcards(FILE *f1, FILE *f2)
     }
 }
 
+static void cat(FILE *fp) {
+  rewind(fp);
+  unsigned char c;
+  while (fread(&c, 1, 1, fp)) {
+    fprintf(stderr, "%02X ", c);
+  }
+}
+
 int main(int argc, char *argv[])
 {
     FILE *f1, *f2;
+    int result;
 
     if (handleparameter(argc, argv) < 0) {
         return EXIT_FAILURE;
@@ -474,7 +483,14 @@ int main(int argc, char *argv[])
             return comparefileswithwildcards(f1, f2);
         }
         else {
-            return comparefiles(f1, f2);
+            result = comparefiles(f1, f2);
+            if (result != 0) {
+              fprintf(stderr, "First file:\n");
+              cat(f1);
+              fprintf(stderr, "\nSecond file:\n");
+              cat(f2);
+              fprintf(stderr, "\n");
+            }
         }
     }
 }