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Re: [C++17] Implement N3928 - Extending static_assert

From: Jason Merrill <jason at redhat dot com>
To: Ed Smith-Rowland <3dw4rd at verizon dot net>, gcc-patches <gcc-patches at gcc dot gnu dot org>, Paolo Carlini <paolo dot carlini at oracle dot com>
Date: Wed, 17 Jun 2015 15:22:58 -0400
Subject: Re: [C++17] Implement N3928 - Extending static_assert
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References: <55453092 dot 5050501 at verizon dot net> <555CA818 dot 7020301 at redhat dot com> <557EF7AF dot 4080009 at redhat dot com> <557F5C53 dot 2090009 at verizon dot net> <558182C8 dot 4070204 at redhat dot com> <5581B436 dot 6060402 at verizon dot net>

On 06/17/2015 01:53 PM, Ed Smith-Rowland wrote:

I tried the obvious: an error message with %qE and got 'false'.
constexpr values are evaluated early on.

Is there a possibility that late folding could help or is that
completely different?

Late folding could help, but I think handling it in libcpp (by actuallystringizing the argument) would work better.


Jason

Follow-Ups:
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References:
- Re: [C++17] Implement N3928 - Extending static_assert
  - From: Jason Merrill
- Re: [C++17] Implement N3928 - Extending static_assert
  - From: Ed Smith-Rowland
- Re: [C++17] Implement N3928 - Extending static_assert
  - From: Jason Merrill
- Re: [C++17] Implement N3928 - Extending static_assert
  - From: Ed Smith-Rowland

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