[Lldb-commits] [lldb] r305778 - ProcessLauncherPosixFork: Fetch errno early

[Pavel Labath via lldb-commits]

Author: labath
Date: Tue Jun 20 03:11:37 2017
New Revision: 305778

URL: http://llvm.org/viewvc/llvm-project?rev=305778&view=rev
Log:
ProcessLauncherPosixFork: Fetch errno early

I was seeing some unlikely errno values here. I am not sure if this will
help, but it nontheless seems like a good idea to stash errno value
before issuing other syscalls.

Modified:
    lldb/trunk/source/Host/posix/ProcessLauncherPosixFork.cpp

Modified: lldb/trunk/source/Host/posix/ProcessLauncherPosixFork.cpp
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Host/posix/ProcessLauncherPosixFork.cpp?rev=305778&r1=305777&r2=305778&view=diff
==============================================================================
--- lldb/trunk/source/Host/posix/ProcessLauncherPosixFork.cpp (original)
+++ lldb/trunk/source/Host/posix/ProcessLauncherPosixFork.cpp Tue Jun 20 03:11:37 2017
@@ -52,10 +52,10 @@ static void FixupEnvironment(Args &env)
 
 static void LLVM_ATTRIBUTE_NORETURN ExitWithError(int error_fd,
                                                   const char *operation) {
-  std::ostringstream os;
-  os << operation << " failed: " << strerror(errno);
-  write(error_fd, os.str().data(), os.str().size());
-  close(error_fd);
+  int err = errno;
+  llvm::raw_fd_ostream os(error_fd, true);
+  os << operation << " failed: " << llvm::sys::StrError(err);
+  os.flush();
   _exit(1);
 }