<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>I have a python script that automatically launches a simulator and connects to it with gdb-remote. Everything works fine on Linux. But when I issue the “kill” command on Windows, LLDB crashes.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>This only happens if I launch the simulator (or any external program) using python. I’m using subprocess.Popen, but I’ve also tried os.spawnl. I’ve traced the problem down to reading errno in Error::SetErrorToErrno(). In this case, errno is 0, so no error is reported, and the -1 that recv returns is used as a buffer size and LLDB crashes. If I don’t launch a program using Popen, errno is 2, and everything is handled correctly.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Stepping into the errno access, GetLastError() is correctly set to WSAECONNRESET, but ptd->_terrno, which errno is set to, is 0. This seems like a Visual Studio 2012 runtime bug.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I think maybe we shouldn’t rely on errno on Windows, but call GetLastError() and convert their error numbers to POSIX error values.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Ted<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>