57 lines · cpp
1// Purpose:2// This ensures that DW_OP_deref is inserted when necessary, such as when3// NRVO of a string object occurs in C++.4//5// REQUIRES: !asan, compiler-rt, lldb6// UNSUPPORTED: system-windows7// Zorg configures the ASAN stage2 bots to not build the asan8// compiler-rt. Only run this test on non-asanified configurations.9//10// RUN: %clang++ -std=gnu++11 -O0 -glldb -fno-exceptions %s -o %t11// RUN: %dexter --fail-lt 1.0 -w \12// RUN: --binary %t %dexter_lldb_args -- %s13//14// RUN: %clang++ -std=gnu++11 -O1 -glldb -fno-exceptions %s -o %t15// RUN: %dexter --fail-lt 1.0 -w \16// RUN: --binary %t %dexter_lldb_args -- %s17//18// PR3451319volatile int sideeffect = 0;20void __attribute__((noinline)) stop() { sideeffect++; }21 22struct string {23 string() {}24 string(int i) : i(i) {}25 ~string() {}26 int i = 0;27};28string __attribute__((noinline)) get_string() {29 string unused;30 string output = 3;31 stop(); // DexLabel('string-nrvo')32 return output;33}34void some_function(int) {}35struct string2 {36 string2() = default;37 string2(string2 &&other) { i = other.i; }38 int i;39};40string2 __attribute__((noinline)) get_string2() {41 string2 output;42 output.i = 5;43 some_function(output.i);44 // Test that the debugger can get the value of output after another45 // function is called.46 stop(); // DexLabel('string2-nrvo')47 return output;48}49int main() {50 get_string();51 get_string2();52}53 54// DexExpectWatchValue('output.i', 3, on_line=ref('string-nrvo'))55// DexExpectWatchValue('output.i', 5, on_line=ref('string2-nrvo'))56 57