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* [Bug c++/85461] A simple recursive TMP static const initializer defeats gcc
[not found] <bug-85461-4@http.gcc.gnu.org/bugzilla/>
@ 2021-12-22 1:45 ` pinskia at gcc dot gnu.org
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From: pinskia at gcc dot gnu.org @ 2021-12-22 1:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85461
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Using constexpr is a decent workaround.
Note enum version of this is rejected by all compilers:
template<unsigned int v>
struct bitWidthHolding {
enum {width = (v == 0) ? 0 : bitWidthHolding<(v>>1)>::width + 1};
};
int a = bitWidthHolding<255>::width;
Which I find interesting.
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[not found] <bug-85461-4@http.gcc.gnu.org/bugzilla/>
2021-12-22 1:45 ` [Bug c++/85461] A simple recursive TMP static const initializer defeats gcc pinskia at gcc dot gnu.org
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