6fd55bba61
Running tests for libunwind is a lot simpler than running tests for libc++, so a simple Lit config file is sufficient. The benefit is that we disentangle the libunwind test configuration from the libc++ and libc++abi test configuration. The setup was too complicated, which led to some bugs (notably we were running against the system libunwind on Apple platforms). Differential Revision: https://reviews.llvm.org/D111664
43 lines
720 B
C++
43 lines
720 B
C++
// TODO: Investigate these failures
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// XFAIL: asan, tsan, ubsan
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#include <assert.h>
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#include <stdlib.h>
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#include <unwind.h>
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#define EXPECTED_NUM_FRAMES 50
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#define NUM_FRAMES_UPPER_BOUND 100
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_Unwind_Reason_Code callback(_Unwind_Context *context, void *cnt) {
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(void)context;
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int *i = (int *)cnt;
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++*i;
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if (*i > NUM_FRAMES_UPPER_BOUND) {
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abort();
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}
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return _URC_NO_REASON;
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}
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void test_backtrace() {
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int n = 0;
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_Unwind_Backtrace(&callback, &n);
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if (n < EXPECTED_NUM_FRAMES) {
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abort();
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}
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}
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int test(int i) {
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if (i == 0) {
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test_backtrace();
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return 0;
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} else {
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return i + test(i - 1);
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}
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}
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int main(int, char**) {
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int total = test(50);
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assert(total == 1275);
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return 0;
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}
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