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// Purpose:
// This ensures that DW_OP_deref is inserted when necessary, such as when
// NRVO of a string object occurs in C++.
//
// REQUIRES: !asan, compiler-rt, lldb
// UNSUPPORTED: system-windows
// Zorg configures the ASAN stage2 bots to not build the asan
// compiler-rt. Only run this test on non-asanified configurations.
//
// RUN: %dexter --fail-lt 1.0 -w \
// RUN: --builder 'clang' --debugger 'lldb' \
// RUN: --cflags "-O0 -glldb -fno-exceptions" -- %s
//
// RUN: %dexter --fail-lt 1.0 -w \
// RUN: --builder 'clang' --debugger 'lldb' \
// RUN: --cflags "-O1 -glldb -fno-exceptions" -- %s
//
// PR34513
volatile int sideeffect = 0;
void __attribute__((noinline)) stop() { sideeffect++; }
struct string {
string() {}
string(int i) : i(i) {}
~string() {}
int i = 0;
};
string __attribute__((noinline)) get_string() {
string unused;
string output = 3;
stop(); // DexLabel('string-nrvo')
return output;
}
void some_function(int) {}
struct string2 {
string2() = default;
string2(string2 &&other) { i = other.i; }
int i;
};
string2 __attribute__((noinline)) get_string2() {
string2 output;
output.i = 5;
some_function(output.i);
// Test that the debugger can get the value of output after another
// function is called.
stop(); // DexLabel('string2-nrvo')
return output;
}
int main() {
get_string();
get_string2();
}
// DexExpectWatchValue('output.i', 3, on_line=ref('string-nrvo'))
// DexExpectWatchValue('output.i', 5, on_line=ref('string2-nrvo'))
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