7fd02b32f9
Issue #178324 was actually fixed by #187755 We lost the "declaration does not declare anything" warning since the regression was introduced, but that was because: 1) Since #78436 we treat __builtin_FUNCSIG in a dependent context effectivelly as if it contained a template parameter. 2) Our decltype implementation treats eexpressions containing template parameters as if they were completely opaque (but alas this goes against the spec, which says in [temp.type]p4 this should be looking only at type dependence). 3) Since the decltype is opaque, we don't know what lookup will find, so we can't issue the warning because we don't know if we are going to end up with a type or an expression. Fixes #178324
C language Family Front-end
Welcome to Clang.
This is a compiler front-end for the C family of languages (C, C++ and Objective-C) which is built as part of the LLVM compiler infrastructure project.
Unlike many other compiler frontends, Clang is useful for a number of things beyond just compiling code: we intend for Clang to be host to a number of different source-level tools. One example of this is the Clang Static Analyzer.
If you're interested in more (including how to build Clang) it is best to read the relevant websites. Here are some pointers:
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Information on Clang: http://clang.llvm.org/
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Building and using Clang: http://clang.llvm.org/get_started.html
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Clang Static Analyzer: http://clang-analyzer.llvm.org/
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Information on the LLVM project: http://llvm.org/
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If you have questions or comments about Clang, a great place to discuss them is on the Clang forums:
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If you find a bug in Clang, please file it in the LLVM bug tracker: