[OBSOLETE]new experiment

hax/haxlib.cc

Index: hax/haxlib.cc
diff --git a/hax/haxlib.cc b/hax/haxlib.cc
new file mode 100644
index 0000000000000000000000000000000000000000..cd6b9d31194355d61dab8a2c06e9b27e4416b5b5
--- /dev/null
+++ b/hax/haxlib.cc
@@ -0,0 +1,40 @@
+#include "base/allocator/allocator_shim.h"
+#include "base/logging.h"
+#include "base/process/memory.h"
+
+volatile bool did_call_new_handler = false;
+
+static void NewHandler() {
+  printf("Did call the std::new_handler. SUCCESS.\n");
+  fflush(stdout);
+  exit(0);
+}
+
+extern "C" void __attribute__((visibility("default"))) Hax() {
+  void* ptr;
+
+  // Normal malloc/free - no problems
+  ptr = malloc(64);
+  free(ptr);
+
+  // Unchecked malloc/free - problems!
+  CHECK(base::UncheckedMalloc(42, &ptr));
+  free(ptr);
+
+  printf("malloc and unchecked malloc test passed, now testing SetCallNewHandlerOnMallocFailure\n");
+
+  std::set_new_handler(&NewHandler);
+  base::allocator::SetCallNewHandlerOnMallocFailure(true);
+  while(true) {
+    const size_t kAllocSize = 128 * 1024 * 102;
+    volatile uint8_t* x = (volatile uint8_t*) malloc(kAllocSize);
+    if (!x) {
+      printf("Bummer, malloc returned nullptr without calling the new handler. FAIL\n");
+      exit(1);
+      break;
+    }
+    x[0] = 1;
+    x[kAllocSize - 1] = 1;
+  }
+
+}