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https://github.com/ioacademy-jikim/debugging
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39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
// This is a test for complicated stack traces.
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//
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// - In deep-A.vgtest, the stack trace is larger than the asked-for depth
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// (12 vs. 8) so not all of the trace is shown.
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// - In deep-B.vgtest, we have --alloc-fn=a6..a12, which means that get_XCon
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// needs to redo the IP getting, because 7 functions get removed from the
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// trace, which is more than the initial overestimate of 3.
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// - In deep-C.vgtest, we have --alloc-fn=a3..a12, which means that get_XCon
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// ends up with an empty stack trace after removing all the alloc-fns.
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// It then redoes it.
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// - In deep-D.vgtest, we have --alloc-fn=main..a12, which means we have a
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// stack trace with a single "(below main)" entry.
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#include <stdlib.h>
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void a12(int n) { malloc(n); }
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void a11(int n) { a12(n); }
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void a10(int n) { a11(n); }
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void a9 (int n) { a10(n); }
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void a8 (int n) { a9 (n); }
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void a7 (int n) { a8 (n); }
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void a6 (int n) { a7 (n); }
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void a5 (int n) { a6 (n); }
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void a4 (int n) { a5 (n); }
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void a3 (int n) { a4 (n); }
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void a2 (int n) { a3 (n); }
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void a1 (int n) { a2 (n); }
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int main(void)
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{
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int i;
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// This one exceeds the default --depth.
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for (i = 0; i < 10; i++)
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a1(400); // divisible by 16 -- no slop
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return 0;
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}
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