// RUN: %clangxx_asan -O0 -mllvm -asan-instrument-allocas %s -o %t // RUN: not %run %t 2>&1 | FileCheck %s // // This is reduced testcase based on Chromium code. // See http://reviews.llvm.org/D6055?vs=on&id=15616&whitespace=ignore-all#toc. #include <stdint.h> #include <assert.h> int a = 7; int b; int c; int *p; __attribute__((noinline)) void fn3(int *first, int second) { } int main() { int d = b && c; int e[a]; // NOLINT assert(!(reinterpret_cast<uintptr_t>(e) & 31L)); int f; if (d) fn3(&f, sizeof 0 * (&c - e)); e[a] = 0; // CHECK: ERROR: AddressSanitizer: dynamic-stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] // CHECK: WRITE of size 4 at [[ADDR]] thread T0 return 0; }