1 // RUN: %clangxx_asan -O0 -mllvm -asan-instrument-allocas %s -o %t 2 // RUN: not %run %t 2>&1 | FileCheck %s 3 // 4 5 // This is reduced testcase based on Chromium code. 6 // See http://reviews.llvm.org/D6055?vs=on&id=15616&whitespace=ignore-all#toc. 7 8 #include <stdint.h> 9 #include <assert.h> 10 11 int a = 7; 12 int b; 13 int c; 14 int *p; 15 16 __attribute__((noinline)) void fn3(int *first, int second) { 17 } 18 19 int main() { 20 int d = b && c; 21 int e[a]; // NOLINT 22 assert(!(reinterpret_cast<uintptr_t>(e) & 31L)); 23 int f; 24 if (d) 25 fn3(&f, sizeof 0 * (&c - e)); 26 e[a] = 0; 27 // CHECK: ERROR: AddressSanitizer: dynamic-stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] 28 // CHECK: WRITE of size 4 at [[ADDR]] thread T0 29 return 0; 30 } 31
