ci2_mem

tests/06_memory_exception.c

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+/* - | Copyright / About | ----------------------------------------------------
+   Copyright (c) 2026 Randy Jordan
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+ * --------------------------------------------------------------------------*/
+#define DEBUG
+#define GUI_DEBUG_CLOSE
+#include "../include/ci2.h"
+#include <stdlib.h>
+#include <string.h>
+
+static int
+test_caught_exception()
+{
+  size_t nbytes = CI2_GB(1024);
+  void* buf = NULL;
+  const char* str = "Hello World";
+  buf = CI2_CALLOC(1, strlen(str + 1)); /* You have no enable asan options. */
+  strncpy(buf, str, strlen(str));
+
+  char* opts = "ASAN_OPTIONS=allocator_may_fail=1";
+
+  printf("Attempting oom re-allocation of %zu at %p\n", nbytes, buf);
+  printf("Adding %s to env....%d\n", opts, putenv(opts));
+
+  CI2_TRY
+  {
+    printf("Trying something dumb.\n");
+    CI2_RESIZE(buf, nbytes);
+  }
+  CI2_EXCEPT(oom)
+  {
+    /* handle memory failure gracefully */
+    printf("Caught: %s\n", oom.msg);
+    return EXIT_SUCCESS; /* requested behavior */
+  }
+  CI2_FINALLY
+  {
+    /* cleanup if needed, runs always */
+    printf("Have to free allocation of %zu at %p\n", strlen(buf), buf);
+    if (buf)
+      free(buf);
+  }
+  CI2_END_TRY;
+  return EXIT_FAILURE;
+}
+
+static int
+test_uncaught_exception(void)
+{
+#ifdef CI2_EXCEPTION_CRASH
+  printf("CI2_MSG — Deliberate Failure (expect a debug break)\n");
+  printf("  Triggering ci2_raise_exception() now...\n");
+  fflush(stdout);
+
+  struct CI2_Exception u = { EFAULT, "Deliberate uncaught exception test." };
+  CI2_RAISE(u);
+  printf("  [FAIL] Execution continued past a failing ASSERT_MSG!\n");
+  return EXIT_FAILURE; // Shouldn't but still.
+#endif
+  return EXIT_SUCCESS;
+}
+
+int
+main(int argc, ci2_sys_char* argv[])
+{
+  UNUSED(argc);
+  UNUSED(argv);
+  int result = -1;
+  result = test_uncaught_exception();
+  result = test_caught_exception();
+
+  return result;
+}