cross-project-tests/debuginfo-tests/dexter-tests/inline-line-gap.cpp

   1 // REQUIRES: system-windows
   2 //
   3 // RUN: %dexter --fail-lt 1.0 -w --builder 'clang-cl_vs2015' \
   4 // RUN:      --debugger 'dbgeng' --cflags '/Od /Z7 /Zi' \
   5 // RUN:      --ldflags '/Od /Z7 /Zi' -- %s
   6 //
   7 // RUN: %dexter --fail-lt 1.0 -w --builder 'clang-cl_vs2015' \
   8 // RUN:      --debugger 'dbgeng' --cflags '/O2 /Z7 /Zi' \
   9 // RUN:      --ldflags '/O2 /Z7 /Zi' -- %s
  10
  11 // This code is structured to have an early exit with an epilogue in the middle
  12 // of the function, which creates a gap between the beginning of the inlined
  13 // code region and the end. Previously, this confused cdb.
  14
  15 volatile bool shutting_down_ = true;
  16 volatile bool tearing_down_ = true;
  17
  18 void __attribute__((optnone)) setCrashString(const char *) {}
  19 void __attribute__((optnone)) doTailCall() {}
  20 extern "C" void __declspec(noreturn) abort();
  21
  22 void __forceinline inlineCrashFrame() {
  23   if (shutting_down_ || tearing_down_) {
  24     setCrashString("crashing");
  25     // MSVC lays out calls to abort out of line, gets the layout we want.
  26     abort(); // DexLabel('stop')
  27   }
  28 }
  29
  30 void __declspec(noinline) callerOfInlineCrashFrame(bool is_keeping_alive) {
  31   if (is_keeping_alive)
  32     inlineCrashFrame();
  33   else
  34     doTailCall();
  35 }
  36
  37 int __attribute__((optnone)) main() {
  38   callerOfInlineCrashFrame(true);
  39 }
  40
  41 /*
  42 DexExpectProgramState({'frames':[
  43      {'function': 'inlineCrashFrame', 'location':{'lineno' : ref('stop')} },
  44      {'function': 'callerOfInlineCrashFrame'},
  45      {'function': 'main'}
  46 ]})
  47 */