[backported/clang-9][libclang] Fix CXTranslationUnit_KeepGoingrelease_70-based

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https://reviews.llvm.org/D58501
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Since

    commit 56f548bbbb7e4387a69708f70724d00e9e076153
    [modules] Round-trip -Werror flag through explicit module build.

the behavior of CXTranslationUnit_KeepGoing changed:
Unresolved #includes are fatal errors again. As a consequence, some
templates are not instantiated and lead to confusing errors.

Revert to the old behavior: With CXTranslationUnit_KeepGoing fatal
errors are mapped to errors.

Subscribers: arphaman, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D58501

Fixes: QTCREATORBUG-21892
Change-Id: I6b5c2490922a798fcc9080fa73fa1fdaecf7bddd
Reviewed-by: Ivan Donchevskii <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/tools/libclang/CIndex.cpp b/tools/libclang/CIndex.cpp
index 4b508ad22f..33c074632f 100644
--- a/tools/libclang/CIndex.cpp
+++ b/tools/libclang/CIndex.cpp
@@ -3397,7 +3397,7 @@ clang_parseTranslationUnit_Impl(CXIndex CIdx, const char *source_filename,
     Diags(CompilerInstance::createDiagnostics(new DiagnosticOptions));
 
   if (options & CXTranslationUnit_KeepGoing)
-    Diags->setSuppressAfterFatalError(false);
+    Diags->setFatalsAsError(true);
 
   if (options & CXTranslationUnit_IgnoreNonErrorsFromIncludedFiles)
       Diags->setSuppressNonErrorsFromIncludedFiles(true);