Workaround build error for mingw-g++

mingw-g++ does not correctly support the full `std::errc` namespace as
worded in the standard[1]. As such, we cannot reliably use all names
therein. This patch changes the use of
`std::errc::state_not_recoverable`, to use portable error codes from the
`llvm::errc` equivalent.

[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71444

Reviewed by v.g.vassilev
Differential Revision: https://reviews.llvm.org/D111315

1 files changed, 6 insertions, 5 deletions

diff --git a/clang/lib/Interpreter/Interpreter.cpp b/clang/lib/Interpreter/Interpreter.cpp
index 3e8d388..28c6c4f 100644
--- a/clang/lib/Interpreter/Interpreter.cpp
+++ b/clang/lib/Interpreter/Interpreter.cpp
@@ -30,6 +30,7 @@
 #include "clang/Lex/PreprocessorOptions.h"
 
 #include "llvm/IR/Module.h"
+#include "llvm/Support/Errc.h"
 #include "llvm/Support/Host.h"
 
 using namespace clang;
@@ -47,14 +48,14 @@ GetCC1Arguments(DiagnosticsEngine *Diagnostics,
   // failed. Extract that job from the Compilation.
   const driver::JobList &Jobs = Compilation->getJobs();
   if (!Jobs.size() || !isa<driver::Command>(*Jobs.begin()))
-    return llvm::createStringError(std::errc::state_not_recoverable,
+    return llvm::createStringError(llvm::errc::not_supported,
                                    "Driver initialization failed. "
                                    "Unable to create a driver job");
 
   // The one job we find should be to invoke clang again.
   const driver::Command *Cmd = cast<driver::Command>(&(*Jobs.begin()));
   if (llvm::StringRef(Cmd->getCreator().getName()) != "clang")
-    return llvm::createStringError(std::errc::state_not_recoverable,
+    return llvm::createStringError(llvm::errc::not_supported,
                                    "Driver initialization failed");
 
   return &Cmd->getArguments();
@@ -89,13 +90,13 @@ CreateCI(const llvm::opt::ArgStringList &Argv) {
   // Create the actual diagnostics engine.
   Clang->createDiagnostics();
   if (!Clang->hasDiagnostics())
-    return llvm::createStringError(std::errc::state_not_recoverable,
+    return llvm::createStringError(llvm::errc::not_supported,
                                    "Initialization failed. "
                                    "Unable to create diagnostics engine");
 
   DiagsBuffer->FlushDiagnostics(Clang->getDiagnostics());
   if (!Success)
-    return llvm::createStringError(std::errc::state_not_recoverable,
+    return llvm::createStringError(llvm::errc::not_supported,
                                    "Initialization failed. "
                                    "Unable to flush diagnostics");
 
@@ -106,7 +107,7 @@ CreateCI(const llvm::opt::ArgStringList &Argv) {
   Clang->setTarget(TargetInfo::CreateTargetInfo(
       Clang->getDiagnostics(), Clang->getInvocation().TargetOpts));
   if (!Clang->hasTarget())
-    return llvm::createStringError(std::errc::state_not_recoverable,
+    return llvm::createStringError(llvm::errc::not_supported,
                                    "Initialization failed. "
                                    "Target is missing");