be811d1617
This patch actually runs the tests for picolibc behind an emulator, removing a few workarounds and increasing coverage. Differential Revision: https://reviews.llvm.org/D155521
56 lines
1.2 KiB
C++
56 lines
1.2 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// TODO: Figure out why this fails with Memory Sanitizer.
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// XFAIL: msan
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// This test fails on older llvm, when built with picolibc.
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// XFAIL: clang-16 && LIBCXX-PICOLIBC-FIXME
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#undef NDEBUG
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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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