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Diffstat (limited to 'test/scudo/realloc.cpp')
| -rw-r--r-- | test/scudo/realloc.cpp | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/test/scudo/realloc.cpp b/test/scudo/realloc.cpp deleted file mode 100644 index 26f6373b918e..000000000000 --- a/test/scudo/realloc.cpp +++ /dev/null @@ -1,92 +0,0 @@ -// RUN: %clangxx_scudo %s -lstdc++ -o %t -// RUN: %run %t pointers 2>&1 -// RUN: %run %t contents 2>&1 -// RUN: %run %t usablesize 2>&1 - -// Tests that our reallocation function returns the same pointer when the -// requested size can fit into the previously allocated chunk. Also tests that -// a new chunk is returned if the size is greater, and that the contents of the -// chunk are left unchanged. Finally, checks that realloc copies the usable -// size of the old chunk to the new one (as opposed to the requested size). - -#include <assert.h> -#include <malloc.h> -#include <string.h> - -#include <vector> - -#include <sanitizer/allocator_interface.h> - -int main(int argc, char **argv) -{ - void *p, *old_p; - // Those sizes will exercise both allocators (Primary & Secondary). - std::vector<size_t> sizes{1, 16, 1024, 32768, 1 << 16, 1 << 17, 1 << 20}; - - assert(argc == 2); - - if (!strcmp(argv[1], "usablesize")) { - // This tests a sketchy behavior inherited from poorly written libraries - // that have become somewhat standard. When realloc'ing a chunk, the - // copied contents should span the usable size of the chunk, not the - // requested size. - size_t size = 496, usable_size; - p = nullptr; - // Make sure we get a chunk with a usable size actually larger than size. - do { - if (p) free(p); - size += 16; - p = malloc(size); - usable_size = __sanitizer_get_allocated_size(p); - assert(usable_size >= size); - } while (usable_size == size); - for (int i = 0; i < usable_size; i++) - reinterpret_cast<char *>(p)[i] = 'A'; - old_p = p; - // Make sure we get a different chunk so that the data is actually copied. - do { - size *= 2; - p = realloc(p, size); - assert(p); - } while (p == old_p); - // The contents of the new chunk must match the old one up to usable_size. - for (int i = 0; i < usable_size; i++) - assert(reinterpret_cast<char *>(p)[i] == 'A'); - free(p); - } else { - for (size_t size : sizes) { - if (!strcmp(argv[1], "pointers")) { - old_p = p = realloc(nullptr, size); - assert(p); - size = __sanitizer_get_allocated_size(p); - // Our realloc implementation will return the same pointer if the size - // requested is lower than or equal to the usable size of the associated - // chunk. - p = realloc(p, size - 1); - assert(p == old_p); - p = realloc(p, size); - assert(p == old_p); - // And a new one if the size is greater. - p = realloc(p, size + 1); - assert(p != old_p); - // A size of 0 will free the chunk and return nullptr. - p = realloc(p, 0); - assert(!p); - old_p = nullptr; - } - if (!strcmp(argv[1], "contents")) { - p = realloc(nullptr, size); - assert(p); - for (int i = 0; i < size; i++) - reinterpret_cast<char *>(p)[i] = 'A'; - p = realloc(p, size + 1); - // The contents of the reallocated chunk must match the original one. - for (int i = 0; i < size; i++) - assert(reinterpret_cast<char *>(p)[i] == 'A'); - } - } - } - return 0; -} - -// CHECK: ERROR: invalid chunk type when reallocating address |
