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* [Bug middle-end/90302] Implement __builtin_warning
[not found] <bug-90302-4@http.gcc.gnu.org/bugzilla/>
@ 2020-05-21 8:35 ` tkoenig at gcc dot gnu.org
2023-05-09 13:18 ` redi at gcc dot gnu.org
1 sibling, 0 replies; 2+ messages in thread
From: tkoenig at gcc dot gnu.org @ 2020-05-21 8:35 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90302
--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
There is a prototype patch by Martin Sebor at
https://gcc.gnu.org/pipermail/gcc-patches/2019-October/531812.html
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug middle-end/90302] Implement __builtin_warning
[not found] <bug-90302-4@http.gcc.gnu.org/bugzilla/>
2020-05-21 8:35 ` [Bug middle-end/90302] Implement __builtin_warning tkoenig at gcc dot gnu.org
@ 2023-05-09 13:18 ` redi at gcc dot gnu.org
1 sibling, 0 replies; 2+ messages in thread
From: redi at gcc dot gnu.org @ 2023-05-09 13:18 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90302
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |redi at gcc dot gnu.org
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This would be very useful for the C++ library where we currently have
precondition checks that:
- abort at runtime if you compile with -D_GLIBCXX_ASSERTIONS, or
- fail at compile-time if they are constexpr **and** are actually evaluated
during constexpr evaluation
The runtime assertions are good, but not enabled by default, and an earlier
warning at compile time means the problem can be found sooner.
The constexpr errors are good, but don't apply to non-constexpr calls, even if
all the arguments are known during compilation.
It would be nice to be able to also issue warnings for non-constexpr calls,
when compiled without -D_GLIBCXX_ASSERTIONS.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2020-05-21 8:35 ` [Bug middle-end/90302] Implement __builtin_warning tkoenig at gcc dot gnu.org
2023-05-09 13:18 ` redi at gcc dot gnu.org
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