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50 lines
1.2 KiB
50 lines
1.2 KiB
// RUN: %clangxx_asan -std=c++11 -O0 %s -o %t
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// RUN: %run %t 2>&1 | FileCheck %s
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// RUN: %env_asan_opts=debug=1,verbosity=2 %run %t 2>&1 | FileCheck %s
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// Test ASan initialization
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// This test closes the 0, 1, and 2 file descriptors before an exec() and relies
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// on them remaining closed across an execve(). This is not the case on newer
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// versions of Android. On PPC with ASLR turned on, this fails when linked with
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// lld - see https://bugs.llvm.org/show_bug.cgi?id=45076.
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// UNSUPPORTED: android, powerpc
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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extern "C" const char *__asan_default_options() {
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return "test_only_emulate_no_memorymap=1";
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}
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void parent(int argc, char **argv) {
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fprintf(stderr, "hello\n");
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// CHECK: hello
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close(0);
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close(1);
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dup2(2, 3);
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close(2);
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char *const newargv[] = {argv[0], (char *)"x", nullptr};
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execv(argv[0], newargv);
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perror("execve");
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exit(1);
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}
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void child() {
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assert(dup(3) == 0);
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assert(dup(3) == 1);
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assert(dup(3) == 2);
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fprintf(stderr, "world\n");
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// CHECK: world
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}
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int main(int argc, char **argv) {
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if (argc == 1) {
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parent(argc, argv);
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} else {
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child();
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}
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}
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