初始化内容

third/mimalloc/test/test-wrong.c

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+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2020, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+/* test file for valgrind/asan support.
+
+   VALGRIND:
+   ----------
+   Compile in an "out/debug" folder:
+
+   > cd out/debug
+   > cmake ../.. -DMI_TRACK_VALGRIND=1
+   > make -j8
+
+   and then compile this file as:
+
+   > gcc -g -o test-wrong -I../../include ../../test/test-wrong.c libmimalloc-valgrind-debug.a -lpthread
+
+   and test as:
+
+   > valgrind ./test-wrong
+
+   
+   ASAN
+   ----------
+   Compile in an "out/debug" folder:
+
+   > cd out/debug
+   > cmake ../.. -DMI_TRACK_ASAN=1
+   > make -j8
+
+   and then compile this file as:
+
+   > clang -g -o test-wrong -I../../include ../../test/test-wrong.c libmimalloc-asan-debug.a -lpthread -fsanitize=address -fsanitize-recover=address
+
+   and test as:
+
+   > ASAN_OPTIONS=verbosity=1:halt_on_error=0 ./test-wrong
+
+
+*/
+#include <stdio.h>
+#include <stdlib.h>
+#include "mimalloc.h"
+
+#ifdef USE_STD_MALLOC
+# define mi(x) x
+#else
+# define mi(x) mi_##x
+#endif
+
+int main(int argc, char** argv) {
+  (void)(argc);
+  (void)(argv);
+  int* p = (int*)mi(malloc)(3*sizeof(int));
+  p[0] = 1;
+  
+  int* r = (int*)mi_malloc_aligned(8,16);
+  mi_free(r);
+
+  // illegal byte wise read
+  char* c = (char*)mi(malloc)(3);
+  printf("invalid byte: over: %d, under: %d\n", c[4], c[-1]);
+  mi(free)(c);
+  
+  // double free
+  mi(free)(c);
+
+  // undefined access
+  long* q = (long*)mi(malloc)(sizeof(long));
+  printf("undefined: %ld\n", *q);
+
+  // illegal int read
+  printf("invalid: over: %ld, under: %ld\n", q[1], q[-1]);
+
+  *q = 42;
+
+  // buffer overflow
+  q[1] = 43;
+  q[2] = 44;
+
+  // buffer underflow
+  q[-1] = 41;
+
+  mi(free)(q);
+
+  // double free
+  mi(free)(q);
+
+  // use after free
+  printf("use-after-free: %ld\n", *q);
+
+  // leak p
+  // mi_free(p)
+  return 0;
+}