[llvm-bugs] [Bug 50107] New: ASTReader uses `err_pch_langopt_mismatch` wrong

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=50107

            Bug ID: 50107
           Summary: ASTReader uses `err_pch_langopt_mismatch` wrong
           Product: clang
           Version: 8.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: jdoerfert at anl.gov
                CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
                    richard-llvm at metafoo.co.uk

The diagnostic expects 0 or 1, but the usage simply forwards LangOpts.Name,
which is often much bigger. Triggers an unrelated assertion when it tries to
diagnose that you used pch wrong.

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