forked from OSchip/llvm-project
46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
// Regression test for:
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// http://code.google.com/p/address-sanitizer/issues/detail?id=37
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// RUN: %clangxx_asan -O0 %s -o %t && %run %t | FileCheck %s
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// RUN: %clangxx_asan -O1 %s -o %t && %run %t | FileCheck %s
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// RUN: %clangxx_asan -O2 %s -o %t && %run %t | FileCheck %s
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// RUN: %clangxx_asan -O3 %s -o %t && %run %t | FileCheck %s
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// XFAIL: arm-linux-gnueabi
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#include <stdio.h>
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#include <sched.h>
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#include <sys/syscall.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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int Child(void *arg) {
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char x[32] = {0}; // Stack gets poisoned.
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printf("Child: %p\n", x);
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_exit(1); // NoReturn, stack will remain unpoisoned unless we do something.
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}
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int main(int argc, char **argv) {
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const int kStackSize = 1 << 20;
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char child_stack[kStackSize + 1];
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char *sp = child_stack + kStackSize; // Stack grows down.
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printf("Parent: %p\n", sp);
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pid_t clone_pid = clone(Child, sp, CLONE_FILES | CLONE_VM, NULL);
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int status;
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pid_t wait_result = waitpid(clone_pid, &status, __WCLONE);
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if (wait_result < 0) {
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perror("waitpid");
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return 0;
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}
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if (wait_result == clone_pid && WIFEXITED(status)) {
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// Make sure the child stack was indeed unpoisoned.
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for (int i = 0; i < kStackSize; i++)
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child_stack[i] = i;
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int ret = child_stack[argc - 1];
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printf("PASSED\n");
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// CHECK: PASSED
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return ret;
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}
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return 0;
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}
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