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53 lines
1.2 KiB
53 lines
1.2 KiB
4 months ago
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// XFAIL:*
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//// See PR47946.
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// REQUIRES: lldb
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// UNSUPPORTED: system-windows
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// RUN: %dexter --fail-lt 1.0 -w --debugger lldb \
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// RUN: --builder clang-c --cflags "-O2 -glldb" -- %s
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//
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//// Check that once-escaped variable 'param' can still be read after we
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//// perform inlining + mem2reg, and that we see the DSE'd value 255.
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int g;
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__attribute__((__always_inline__))
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static void use(int* p) {
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g = *p;
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*p = 255;
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volatile int step = 0; // DexLabel('use1')
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}
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__attribute__((__noinline__))
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void fun(int param) {
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//// Make sure first step is in 'fun'.
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volatile int step = 0; // DexLabel('fun1')
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use(¶m);
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return; // DexLabel('fun2')
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}
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int main() {
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fun(5);
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}
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/*
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# Expect param == 5 before stepping through inlined 'use'.
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DexExpectWatchValue('param', '5', on_line='fun1')
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# Expect param == 255 after assignment in inlined frame 'use'.
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DexExpectProgramState({
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'frames': [
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{ 'function': 'use',
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'location': { 'lineno': 'use1' },
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},
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{ 'function': 'fun',
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'location': { 'lineno': 20 },
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'watches': { 'param': '255' }
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},
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]
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})
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# Expect param == 255 after inlined call to 'use'.
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DexExpectWatchValue('param', '255', on_line='fun2')
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*/
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