forked from OSchip/llvm-project
38 lines
615 B
C++
38 lines
615 B
C++
#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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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() {
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int total = test(50);
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assert(total == 1275);
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}
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