[cfe-dev] Calling main() is ub based optimizations

[David Chisnall via cfe-dev]

On 14 Nov 2016, at 09:43, Eric Fiselier via cfe-dev <cfe-dev at lists.llvm.org> wrote:
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> On Sat, Nov 12, 2016 at 11:09 AM, Mehdi Amini via cfe-dev <cfe-dev at lists.llvm.org> wrote:
> main is marked as “norecurse” in C++ and not in C:
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> I would be interested in seeing the standardese associated with each behavior.
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> /Eric

Indeed.  If I implement main in C++ and call it from C, or implement main in C and call it from C++, is it undefined behaviour in both cases?  This seems like a very odd inconsistency if I have to know the source language for both the caller and callee to determine whether something is UB.

David