1600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// Test the behavior of malloc/calloc/realloc when the allocation size is huge. 2600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// By default (allocator_may_return_null=0) the process should crash. 3600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// With allocator_may_return_null=1 the allocator should return 0. 4600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// 5600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// RUN: %clangxx_msan -O0 %s -o %t 62d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: not %run %t malloc 2>&1 | FileCheck %s --check-prefix=CHECK-mCRASH 72d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: MSAN_OPTIONS=allocator_may_return_null=0 not %run %t malloc 2>&1 | FileCheck %s --check-prefix=CHECK-mCRASH 82d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: MSAN_OPTIONS=allocator_may_return_null=1 %run %t malloc 2>&1 | FileCheck %s --check-prefix=CHECK-mNULL 92d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: MSAN_OPTIONS=allocator_may_return_null=0 not %run %t calloc 2>&1 | FileCheck %s --check-prefix=CHECK-cCRASH 102d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: MSAN_OPTIONS=allocator_may_return_null=1 %run %t calloc 2>&1 | FileCheck %s --check-prefix=CHECK-cNULL 112d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: MSAN_OPTIONS=allocator_may_return_null=0 not %run %t calloc-overflow 2>&1 | FileCheck %s --check-prefix=CHECK-coCRASH 122d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: MSAN_OPTIONS=allocator_may_return_null=1 %run %t calloc-overflow 2>&1 | FileCheck %s --check-prefix=CHECK-coNULL 132d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: MSAN_OPTIONS=allocator_may_return_null=0 not %run %t realloc 2>&1 | FileCheck %s --check-prefix=CHECK-rCRASH 142d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: MSAN_OPTIONS=allocator_may_return_null=1 %run %t realloc 2>&1 | FileCheck %s --check-prefix=CHECK-rNULL 152d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: MSAN_OPTIONS=allocator_may_return_null=0 not %run %t realloc-after-malloc 2>&1 | FileCheck %s --check-prefix=CHECK-mrCRASH 162d1fdb26e458c4ddc04155c1d421bced3ba90cd0Stephen Hines// RUN: MSAN_OPTIONS=allocator_may_return_null=1 %run %t realloc-after-malloc 2>&1 | FileCheck %s --check-prefix=CHECK-mrNULL 17600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov 18600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov#include <limits.h> 19600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov#include <stdlib.h> 20600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov#include <string.h> 21600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov#include <stdio.h> 22600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov#include <assert.h> 23600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov#include <limits> 24600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanovint main(int argc, char **argv) { 25600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov volatile size_t size = std::numeric_limits<size_t>::max() - 10000; 26600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov assert(argc == 2); 27600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov char *x = 0; 28600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov if (!strcmp(argv[1], "malloc")) { 29600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov fprintf(stderr, "malloc:\n"); 30600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov x = (char*)malloc(size); 31600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov } 32600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov if (!strcmp(argv[1], "calloc")) { 33600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov fprintf(stderr, "calloc:\n"); 34600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov x = (char*)calloc(size / 4, 4); 35600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov } 36600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov 37600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov if (!strcmp(argv[1], "calloc-overflow")) { 38600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov fprintf(stderr, "calloc-overflow:\n"); 39600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max(); 40600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov size_t kArraySize = 4096; 41600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10; 42600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov x = (char*)calloc(kArraySize, kArraySize2); 43600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov } 44600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov 45600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov if (!strcmp(argv[1], "realloc")) { 46600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov fprintf(stderr, "realloc:\n"); 47600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov x = (char*)realloc(0, size); 48600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov } 49600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov if (!strcmp(argv[1], "realloc-after-malloc")) { 50600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov fprintf(stderr, "realloc-after-malloc:\n"); 51600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov char *t = (char*)malloc(100); 52600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov *t = 42; 53600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov x = (char*)realloc(t, size); 54600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov assert(*t == 42); 55600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov } 56600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov // The NULL pointer is printed differently on different systems, while (long)0 57600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov // is always the same. 58600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov fprintf(stderr, "x: %lx\n", (long)x); 59600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov return x != 0; 60600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov} 61600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-mCRASH: malloc: 62600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-mCRASH: MemorySanitizer's allocator is terminating the process 63600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-cCRASH: calloc: 64600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-cCRASH: MemorySanitizer's allocator is terminating the process 65600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-coCRASH: calloc-overflow: 66600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-coCRASH: MemorySanitizer's allocator is terminating the process 67600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-rCRASH: realloc: 68600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-rCRASH: MemorySanitizer's allocator is terminating the process 69600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-mrCRASH: realloc-after-malloc: 70600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-mrCRASH: MemorySanitizer's allocator is terminating the process 71600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov 72600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-mNULL: malloc: 73600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-mNULL: x: 0 74600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-cNULL: calloc: 75600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-cNULL: x: 0 76600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-coNULL: calloc-overflow: 77600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-coNULL: x: 0 78600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-rNULL: realloc: 79600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-rNULL: x: 0 80600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-mrNULL: realloc-after-malloc: 81600d51680fb20f670695e931de60df4d88616e96Evgeniy Stepanov// CHECK-mrNULL: x: 0 82