Support/MemoryBuffer: Replace all uses of std::string *ErrMsg with error_code &ec. And fix clients.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121379 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 0 deletions

diff --git a/include/llvm/Support/system_error.h b/include/llvm/Support/system_error.h
index 40f5b3cd7f..e5306ecfb3 100644
--- a/include/llvm/Support/system_error.h
+++ b/include/llvm/Support/system_error.h
@@ -668,6 +668,11 @@ public:
 const error_category& generic_category();
 const error_category& system_category();
 
+/// Get the error_category used for errno values from POSIX functions. This is
+/// the same as the system_category on POISIX systems, but is the same as the
+/// generic_category on Windows.
+const error_category& posix_category();
+
 class error_condition
 {
   int _val_;