diff options
Diffstat (limited to 'clang/lib/Lex/HeaderSearch.cpp')
| -rw-r--r-- | clang/lib/Lex/HeaderSearch.cpp | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/clang/lib/Lex/HeaderSearch.cpp b/clang/lib/Lex/HeaderSearch.cpp index 60cb13ba15b..7cadc1bde54 100644 --- a/clang/lib/Lex/HeaderSearch.cpp +++ b/clang/lib/Lex/HeaderSearch.cpp @@ -309,9 +309,18 @@ const FileEntry *HeaderSearch::getFileAndSuggestModule( ModuleMap::KnownHeader *SuggestedModule) { // If we have a module map that might map this header, load it and // check whether we'll have a suggestion for a module. - auto File = getFileMgr().getFile(FileName, /*OpenFile=*/true); - if (!File) + llvm::ErrorOr<const FileEntry *> File = + getFileMgr().getFile(FileName, /*OpenFile=*/true); + if (!File) { + // For rare, surprising errors (e.g. "out of file handles"), diag the EC + // message. + std::error_code EC = File.getError(); + if (EC != std::errc::no_such_file_or_directory && + EC != std::errc::is_a_directory) { + Diags.Report(IncludeLoc, diag::err_cannot_open_file) << EC.message(); + } return nullptr; + } // If there is a module that corresponds to this header, suggest it. if (!findUsableModuleForHeader(*File, Dir ? Dir : (*File)->getDir(), |
