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Diffstat (limited to 'test/scudo/aligned-new.cpp')
-rw-r--r-- | test/scudo/aligned-new.cpp | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/test/scudo/aligned-new.cpp b/test/scudo/aligned-new.cpp new file mode 100644 index 000000000000..0a10ae188c92 --- /dev/null +++ b/test/scudo/aligned-new.cpp @@ -0,0 +1,86 @@ +// RUN: %clangxx_scudo -std=c++1z -faligned-allocation %s -o %t +// RUN: %run %t valid 2>&1 +// RUN: %env_scudo_opts=allocator_may_return_null=1 %run %t invalid 2>&1 +// RUN: %env_scudo_opts=allocator_may_return_null=0 not %run %t invalid 2>&1 | FileCheck %s + +// Tests that the C++17 aligned new/delete operators are working as expected. +// Currently we do not check the consistency of the alignment on deallocation, +// so this just tests that the APIs work. + +#include <assert.h> +#include <stdio.h> +#include <stdint.h> +#include <string.h> + +// Define all new/delete to not depend on the version provided by the platform. + +namespace std { +struct nothrow_t {}; +static const nothrow_t nothrow; +enum class align_val_t : size_t {}; +} // namespace std + +void *operator new(size_t); +void *operator new[](size_t); +void *operator new(size_t, std::nothrow_t const&); +void *operator new[](size_t, std::nothrow_t const&); +void *operator new(size_t, std::align_val_t); +void *operator new[](size_t, std::align_val_t); +void *operator new(size_t, std::align_val_t, std::nothrow_t const&); +void *operator new[](size_t, std::align_val_t, std::nothrow_t const&); + +void operator delete(void*) throw(); +void operator delete[](void*) throw(); +void operator delete(void*, std::nothrow_t const&); +void operator delete[](void*, std::nothrow_t const&); +void operator delete(void*, size_t) throw(); +void operator delete[](void*, size_t) throw(); +void operator delete(void*, std::align_val_t) throw(); +void operator delete[](void*, std::align_val_t) throw(); +void operator delete(void*, std::align_val_t, std::nothrow_t const&); +void operator delete[](void*, std::align_val_t, std::nothrow_t const&); +void operator delete(void*, size_t, std::align_val_t) throw(); +void operator delete[](void*, size_t, std::align_val_t) throw(); + +template<typename T> +inline T* break_optimization(T *arg) { + __asm__ __volatile__("" : : "r" (arg) : "memory"); + return arg; +} + +struct S12 { int a, b, c; }; +struct alignas(128) S12_128 { int a, b, c; }; +struct alignas(256) S12_256 { int a, b, c; }; +struct alignas(512) S1024_512 { char a[1024]; }; +struct alignas(1024) S1024_1024 { char a[1024]; }; + +int main(int argc, char **argv) { + assert(argc == 2); + + if (!strcmp(argv[1], "valid")) { + // Standard use case. + delete break_optimization(new S12); + delete break_optimization(new S12_128); + delete[] break_optimization(new S12_128[4]); + delete break_optimization(new S12_256); + delete break_optimization(new S1024_512); + delete[] break_optimization(new S1024_512[4]); + delete break_optimization(new S1024_1024); + + // Call directly the aligned versions of the operators. + const size_t alignment = 1U << 8; + void *p = operator new(1, static_cast<std::align_val_t>(alignment)); + assert((reinterpret_cast<uintptr_t>(p) & (alignment - 1)) == 0); + operator delete(p, static_cast<std::align_val_t>(alignment)); + } + if (!strcmp(argv[1], "invalid")) { + // Alignment must be a power of 2. + const size_t alignment = (1U << 8) - 1; + void *p = operator new(1, static_cast<std::align_val_t>(alignment), + std::nothrow); + // CHECK: Scudo ERROR: invalid allocation alignment + assert(!p); + } + + return 0; +} |