37 lines
1.4 KiB
C++
37 lines
1.4 KiB
C++
// Test to make sure basic initialization order errors are caught.
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// Check that on Linux initialization order bugs are caught
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// independently on order in which we list source files (if we specify
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// strict init-order checking).
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// RUN: %clangxx_asan -O0 %s %p/../Helpers/initialization-bug-extra.cc -o %t
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// RUN: %env_asan_opts=strict_init_order=true not %run %t 2>&1 | FileCheck %s
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// RUN: %clangxx_asan -O0 %p/../Helpers/initialization-bug-extra.cc %s -o %t
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// RUN: %env_asan_opts=strict_init_order=true not %run %t 2>&1 | FileCheck %s
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// Do not test with optimization -- the error may be optimized away.
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#include <cstdio>
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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: {{#0 0x.* in .*initX.* .*initialization-bug-any-order.cc:}}[[@LINE-3]]
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// CHECK: {{0x.* is located 0 bytes inside of global variable .*y.*}}
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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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