From: David P. Riedel (driedel_at_[hidden])
Date: 2021-08-25 18:59:05
On 8/25/21 2:43 PM, Peter Dimov wrote:
> David P. Riedel wrote:
>> On 8/21/21 11:54 AM, Peter Dimov via Boost wrote:
>>> Ivan Matek wrote:
>>>> As you may know assert does not play nicely with constexpr evaluation.
>>> It does. https://www.godbolt.org/z/KhPja6cEs
>> What am I missing here?
>> I click the above link and see the code
>> If I compile with gcc x86-64 trunk, I get the following:
>>> source>: In function 'int main()':
>>> <source>:12:21: error: non-constant condition for static assertion
>>> 12 | static_assert(5 == func(9,1));
>>> | ~~^~~~~~~~~~~~
>>> In file included from /opt/compiler-explorer/gcc-trunk-
>>> from <source>:2:
>>> <source>:12:28: in 'constexpr' expansion of 'func(9, 1)'
>>> <source>:6:5: error: call to non-'constexpr' function 'void
>> __assert_fail(const char*, const char*, unsigned int, const char*)'
>>> 6 | assert(a<b);
>>> | ^~~~~~
> That's because the assertion fails. a=9, b=1.
> Doh (smacks head)
Thank you !Â ð
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