[llvm-bugs] [Bug 40813] New: Crash when trying to get layout information of undeductible auto type

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=40813

            Bug ID: 40813
           Summary: Crash when trying to get layout information of
                    undeductible auto type
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: libclang
          Assignee: unassignedclangbugs at nondot.org
          Reporter: emilio at crisal.io
                CC: klimek at google.com, llvm-bugs at lists.llvm.org,
                    richard-llvm at metafoo.co.uk

https://github.com/rust-lang-nursery/rust-bindgen crashes when ran on:

class BrowsingContext {
  auto Tie(void* aUnused) const;
};

When trying to call getSizeOf on the auto type.

LLVM asserts:

/home/emilio/src/llvm-project/clang/lib/AST/ASTContext.cpp:2052:
clang::TypeInfo clang::ASTContext::getTypeInfoImpl(const clang::Type *) const:
Assertion `!A->getDeducedType().isNull() && "cannot request the size of an
undeduced or dependent auto type"' failed.

Got a patch, just figuring out how to write a test :)

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