| 1 | // XFAIL:* |
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| 2 | //// See PR47946. |
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| 3 | |
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| 4 | // REQUIRES: lldb |
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| 5 | // UNSUPPORTED: system-windows |
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| 6 | // RUN: %clang -std=gnu11 -O2 -glldb %s -o %t |
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| 7 | // RUN: %dexter --fail-lt 1.0 -w --debugger lldb --binary %t -- %s |
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| 8 | // |
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| 9 | //// Check that once-escaped variable 'param' can still be read after we |
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| 10 | //// perform inlining + mem2reg, and that we see the DSE'd value 255. |
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| 11 | |
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| 12 | |
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| 13 | int g; |
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| 14 | __attribute__((__always_inline__)) |
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| 15 | static void use(int* p) { |
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| 16 | g = *p; |
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| 17 | *p = 255; |
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| 18 | volatile int step = 0; // DexLabel('use1') |
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| 19 | } |
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| 20 | |
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| 21 | __attribute__((__noinline__)) |
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| 22 | void fun(int param) { |
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| 23 | //// Make sure first step is in 'fun'. |
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| 24 | volatile int step = 0; // DexLabel('fun1') |
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| 25 | use(p: ¶m); |
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| 26 | return; // DexLabel('fun2') |
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| 27 | } |
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| 28 | |
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| 29 | int main() { |
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| 30 | fun(param: 5); |
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| 31 | } |
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| 32 | |
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| 33 | /* |
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| 34 | # Expect param == 5 before stepping through inlined 'use'. |
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| 35 | DexExpectWatchValue('param', '5', on_line=ref('fun1')) |
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| 36 | |
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| 37 | # Expect param == 255 after assignment in inlined frame 'use'. |
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| 38 | DexExpectProgramState({ |
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| 39 | 'frames': [ |
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| 40 | { 'function': 'use', |
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| 41 | 'location': { 'lineno': ref('use1') }, |
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| 42 | }, |
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| 43 | { 'function': 'fun', |
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| 44 | 'location': { 'lineno': 20 }, |
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| 45 | 'watches': { 'param': '255' } |
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| 46 | }, |
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| 47 | ] |
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| 48 | }) |
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| 49 | |
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| 50 | # Expect param == 255 after inlined call to 'use'. |
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| 51 | DexExpectWatchValue('param', '255', on_line=ref('fun2')) |
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| 52 | */ |
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| 53 | |
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