[PATCH] libstdc++: bvector: undef always_inline macro

[Alexandre Oliva <oliva@adacore.com>]

On Nov  9, 2023, Jonathan Wakely <jwakely@redhat.com> wrote:

> But I've just realised we probably want to #undef the macro at the end
> of bits/stl_bvector.h too.

I'm not sure why (what if another libstdc++ header were to define the
macro, includes stl_bvector.h, and then use the macro expecting it to
still be there?), but I suppose this is what you mean.  Regstrapped on
x86_64-linux-gnu just to be sure.  Ok to install?


From: Alexandre Oliva <oliva@adacore.com>

It's customary to undefine temporary internal macros at the end of the
header that defines them, even such widely-usable ones as
_GLIBCXX_ALWAYS_INLINE, so do so in the header where the define was
recently introduced.


for  libstdc++-v3/ChangeLog

	* include/bits/stl_bvector.h (_GLIBCXX_ALWAYS_INLINE): Undef.
---
 libstdc++-v3/include/bits/stl_bvector.h |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/libstdc++-v3/include/bits/stl_bvector.h b/libstdc++-v3/include/bits/stl_bvector.h
index 2b91af2005f2d..1b7648535c523 100644
--- a/libstdc++-v3/include/bits/stl_bvector.h
+++ b/libstdc++-v3/include/bits/stl_bvector.h
@@ -1628,4 +1628,6 @@ _GLIBCXX_END_NAMESPACE_CONTAINER
 _GLIBCXX_END_NAMESPACE_VERSION
 } // namespace std
 
+#undef _GLIBCXX_ALWAYS_INLINE
+
 #endif

-- 
Alexandre Oliva, happy hacker            https://FSFLA.org/blogs/lxo/
   Free Software Activist                   GNU Toolchain Engineer
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