forked from OSchip/llvm-project
52 lines
1.7 KiB
C++
52 lines
1.7 KiB
C++
// Test to make sure basic initialization order errors are caught.
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// RUN: %clangxx_asan %macos_min_target_10_11 -O0 %s %p/Helpers/initialization-bug-extra2.cpp -o %t-INIT-ORDER-EXE
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// RUN: %env_asan_opts=check_initialization_order=true not %run %t-INIT-ORDER-EXE 2>&1 | FileCheck %s
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// Do not test with optimization -- the error may be optimized away.
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// FIXME: https://code.google.com/p/address-sanitizer/issues/detail?id=186
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// XFAIL: windows-msvc
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// The test is expected to fail on OS X Yosemite and older
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// UNSUPPORTED: osx-no-ld64-live_support
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// UNSUPPORTED: ios
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#include <cstdio>
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// The structure of the test is:
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// "x", "y", "z" are dynamically initialized globals.
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// Value of "x" depends on "y", value of "y" depends on "z".
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// "x" and "z" are defined in this TU, "y" is defined in another one.
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// Thus we shoud stably report initialization order fiasco independently of
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// the translation unit order.
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int initZ() {
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return 5;
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}
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int z = initZ();
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// 'y' is a dynamically initialized global residing in a different TU. This
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// dynamic initializer will read the value of 'y' before main starts. The
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// result is undefined behavior, which should be caught by initialization order
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// checking.
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extern int y;
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int __attribute__((noinline)) initX() {
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return y + 1;
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// CHECK: {{AddressSanitizer: initialization-order-fiasco}}
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// CHECK: {{READ of size .* at 0x.* thread T0}}
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// CHECK: {{0x.* is located 0 bytes inside of global variable .*(y|z).*}}
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// CHECK: registered at:
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// CHECK: 0x{{.*}} in __asan_register_globals
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}
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// This initializer begins our initialization order problems.
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static int x = initX();
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int main() {
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// ASan should have caused an exit before main runs.
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printf("PASS\n");
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// CHECK-NOT: PASS
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return 0;
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}
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