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Disable signal frame unwinding tests on arm64

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The current libunwind.a LLVM prebuilt lacks the special arm64 signal
frame unwinder (https://reviews.llvm.org/D90898), so disable the signal
frame unwinding tests temporarily. (It's not clear who needs this
functionality on Android -- typically crash dumping should use
libunwindstack instead of _Unwind_Backtrace.)

Bug: http://b/153025717
Test: bionic unit tests
Change-Id: I36644dfe4acbedd937768c3aaaad1010099d602c
This commit is contained in:
Ryan Prichard 2021-01-13 20:34:32 -08:00
parent b4fd072976
commit 315969a67e
1 changed files with 12 additions and 2 deletions
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14
tests/stack_unwinding_test.cpp
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@ -82,7 +82,7 @@ struct UnwindData {
static UnwindData g_unwind_data;
static void noinline UnwindSignalHandler(int) {
__attribute__((unused)) static void noinline UnwindSignalHandler(int) {
_Unwind_Backtrace(FrameCounter, &g_unwind_data.handler_frame_count);
g_unwind_data.handler_one_deeper_frame_count = unwind_one_frame_deeper();
@ -98,7 +98,7 @@ static void verify_unwind_data(const UnwindData& unwind_data) {
EXPECT_EQ(unwind_data.handler_frame_count + 1, unwind_data.handler_one_deeper_frame_count);
}
static void noinline UnwindTest() {
__attribute__((unused)) static void noinline UnwindTest() {
g_unwind_data = {};
_Unwind_Backtrace(FrameCounter, &g_unwind_data.expected_frame_count);
@ -112,14 +112,24 @@ static void noinline UnwindTest() {
}
TEST(stack_unwinding, unwind_through_signal_frame) {
#if defined(__aarch64__)
// A newer libunwind.a update should restore signal frame unwinding on arm64.
GTEST_SKIP() << "signal frame unwinding temporarily broken on arm64 -- b/153025717";
#else
ScopedSignalHandler ssh(SIGUSR1, UnwindSignalHandler);
UnwindTest();
#endif
}
// On LP32, the SA_SIGINFO flag gets you __restore_rt instead of __restore.
TEST(stack_unwinding, unwind_through_signal_frame_SA_SIGINFO) {
#if defined(__aarch64__)
// A newer libunwind.a update should restore signal frame unwinding on arm64.
GTEST_SKIP() << "signal frame unwinding temporarily broken on arm64 -- b/153025717";
#else
ScopedSignalHandler ssh(SIGUSR1, UnwindSignalHandler, SA_SIGINFO);
UnwindTest();
#endif
}