7d01b85c2a
This reverts commit daa4061d61216456baa83ab404e096200e327fb4. Original PR https://github.com/llvm/llvm-project/pull/129092. I have restricted the test to X86 Windows because it turns out the only reason that `expr x.get()` would change m_memory_id is that on x86 we have to write the return address to the stack in ABIWindows_X86_64::PrepareTrivialCall: ``` // Save return address onto the stack if (!process_sp->WritePointerToMemory(sp, return_addr, error)) return false; ``` This is not required on AArch64 so m_memory_id was not changed: ``` (lldb) expr x.get() (int) $0 = 0 (lldb) process status -d Process 15316 stopped * thread #1, stop reason = Exception 0x80000003 encountered at address 0x7ff764a31034 frame #0: 0x00007ff764a31038 TestProcessModificationIdOnExpr.cpp.tmp`main at TestProcessModificationIdOnExpr.cpp:35 32 __builtin_debugtrap(); 33 __builtin_debugtrap(); 34 return 0; -> 35 } 36 37 // CHECK-LABEL: process status -d 38 // CHECK: m_stop_id: 2 ProcessModID: m_stop_id: 3 m_last_natural_stop_id: 0 m_resume_id: 0 m_memory_id: 0 ``` Really we should find a better way to force a memory write here, but I can't think of one right now.
53 lines
1.2 KiB
C++
53 lines
1.2 KiB
C++
// Tests evaluating expressions with side effects on convenience variable.
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// Applied side effect should be visible to the debugger.
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// UNSUPPORTED: system-windows
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// RUN: %build %s -o %t
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// RUN: %lldb %t \
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// RUN: -o "settings set target.process.track-memory-cache-changes false" \
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// RUN: -o "run" \
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// RUN: -o "expr int \$y = 11" \
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// RUN: -o "expr \$y" \
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// RUN: -o "expr \$y = 100" \
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// RUN: -o "expr \$y" \
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// RUN: -o "continue" \
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// RUN: -o "expr \$y" \
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// RUN: -o "expr X \$mine = {100, 200}" \
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// RUN: -o "expr \$mine.a = 300" \
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// RUN: -o "expr \$mine" \
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// RUN: -o "exit" | FileCheck %s -dump-input=fail
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struct X {
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int a;
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int b;
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};
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int main() {
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X x;
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__builtin_debugtrap();
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__builtin_debugtrap();
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return 0;
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}
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// CHECK-LABEL: expr int $y = 11
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// CHECK-LABEL: expr $y
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// CHECK: (int) $y = 11
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// CHECK-LABEL: expr $y = 100
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// CHECK: (int) $0 = 100
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// CHECK-LABEL: expr $y
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// CHECK: (int) $y = 100
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// CHECK-LABEL: continue
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// CHECK-LABEL: expr $y
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// CHECK: (int) $y = 100
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// CHECK-LABEL: expr X $mine = {100, 200}
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// CHECK-LABEL: expr $mine.a = 300
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// CHECK: (int) $1 = 300
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// CHECK-LABEL: expr $mine
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// CHECK: (X) $mine = (a = 300, b = 200)
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