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, 8 insertions, 7 deletions

diff --git a/lib/VMCore/Core.cpp b/lib/VMCore/Core.cpp
index 858f49cdf5..a4c77a2670 100644
--- a/lib/VMCore/Core.cpp
+++ b/lib/VMCore/Core.cpp
@@ -28,6 +28,7 @@
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/system_error.h"
 #include <cassert>
 #include <cstdlib>
 #include <cstring>
@@ -2220,25 +2221,25 @@ LLVMBool LLVMCreateMemoryBufferWithContentsOfFile(
     LLVMMemoryBufferRef *OutMemBuf,
     char **OutMessage) {
 
-  std::string Error;
-  if (MemoryBuffer *MB = MemoryBuffer::getFile(Path, &Error)) {
+  error_code ec;
+  if (MemoryBuffer *MB = MemoryBuffer::getFile(Path, ec)) {
     *OutMemBuf = wrap(MB);
     return 0;
   }
-  
-  *OutMessage = strdup(Error.c_str());
+
+  *OutMessage = strdup(ec.message().c_str());
   return 1;
 }
 
 LLVMBool LLVMCreateMemoryBufferWithSTDIN(LLVMMemoryBufferRef *OutMemBuf,
                                          char **OutMessage) {
-  std::string Error;
-  if (MemoryBuffer *MB = MemoryBuffer::getSTDIN(&Error)) {
+  error_code ec;
+  if (MemoryBuffer *MB = MemoryBuffer::getSTDIN(ec)) {
     *OutMemBuf = wrap(MB);
     return 0;
   }
 
-  *OutMessage = strdup(Error.c_str());
+  *OutMessage = strdup(ec.message().c_str());
   return 1;
 }