From ed2ef8c3691811bc18faf48c6dac883faf18557c Mon Sep 17 00:00:00 2001
From: jvoisin <julien.voisin@dustri.org>
Date: Wed, 3 Jan 2024 17:00:21 +0100
Subject: [PATCH] Add some pathological cases to the testsuite

---
 Makefile             |  3 ++-
 tests/pathological.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+), 1 deletion(-)
 create mode 100644 tests/pathological.c

diff --git a/Makefile b/Makefile
index c779471..01f0c52 100644
--- a/Makefile
+++ b/Makefile
@@ -440,7 +440,8 @@ libc_sanity_tests: clean library_debug_unit_tests
 	$(CC) $(CFLAGS) $(EXE_CFLAGS) $(DEBUG_LOG_FLAGS) $(GDB_FLAGS) $(OS_FLAGS) tests/memcpy_sanity.c $(ISO_ALLOC_PRINTF_SRC) -o $(BUILD_DIR)/memcpy_sanity $(LDFLAGS)
 	$(CC) $(CFLAGS) $(EXE_CFLAGS) $(DEBUG_LOG_FLAGS) $(GDB_FLAGS) $(OS_FLAGS) tests/memmove_sanity.c $(ISO_ALLOC_PRINTF_SRC) -o $(BUILD_DIR)/memmove_sanity $(LDFLAGS)
 	$(CC) $(CFLAGS) $(EXE_CFLAGS) $(DEBUG_LOG_FLAGS) $(GDB_FLAGS) $(OS_FLAGS) tests/bzero_sanity.c $(ISO_ALLOC_PRINTF_SRC) -o $(BUILD_DIR)/bzero_sanity $(LDFLAGS)
-	build/memset_sanity ; build/memcpy_sanity; build/memmove_sanity; build/bzero_sanity ;
+	$(CC) $(CFLAGS) $(EXE_CFLAGS) $(DEBUG_LOG_FLAGS) $(GDB_FLAGS) $(OS_FLAGS) tests/pathological.c $(ISO_ALLOC_PRINTF_SRC) -o $(BUILD_DIR)/pathological $(LDFLAGS)
+	build/memset_sanity; build/memcpy_sanity; build/memmove_sanity; build/bzero_sanity; build/pathological;
 
 fuzz_test: clean library_debug_unit_tests
 	@echo "make fuzz_test"
diff --git a/tests/pathological.c b/tests/pathological.c
new file mode 100644
index 0000000..b8e5dd0
--- /dev/null
+++ b/tests/pathological.c
@@ -0,0 +1,44 @@
+/* iso_alloc memset_sanity.c
+ * Copyright 2023 - chris.rohlf@gmail.com */
+
+#include "iso_alloc.h"
+#include "iso_alloc_internal.h"
+
+#if !MEMSET_SANITY
+#error "This test intended to be run with -DMEMSET_SANITY=1"
+#endif
+
+int main(int argc, char *argv[]) {
+    iso_free(iso_alloc(-1234));
+    iso_free(iso_alloc(-1));
+    iso_free(iso_alloc(0));
+    iso_free(iso_alloc(1));
+
+    iso_free(iso_calloc(-1234, 1));
+    iso_free(iso_calloc(-1, 1));
+    iso_free(iso_calloc(0, 1));
+    iso_free(iso_calloc(1, 1));
+
+    iso_free(iso_calloc(1, -1234));
+    iso_free(iso_calloc(1, -1));
+    iso_free(iso_calloc(1, 0));
+    iso_free(iso_calloc(1, 1));
+
+    iso_free(iso_calloc(0, 0));
+    iso_free(iso_calloc(0, 1));
+    iso_free(iso_calloc(1, 0));
+
+    iso_free(iso_strdup(""));
+    iso_free(iso_strdup(NULL));
+
+    iso_free(iso_realloc(NULL, -1234));
+    iso_free(iso_realloc(NULL, -1));
+    iso_free(iso_realloc(NULL, 0));
+    iso_free(iso_realloc(NULL, 1));
+
+    iso_free(iso_realloc(iso_alloc(1), 0));
+
+    iso_verify_zones();
+
+    return OK;
+}