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authorJoseph Myers <josmyers@redhat.com>2024-02-01 11:02:01 +0000
committerJoseph Myers <josmyers@redhat.com>2024-02-01 11:02:01 +0000
commit42cc619dfbc44e263239c2de870bae11ad65810a (patch)
tree13f7e2f0ad1e9b3c4a36f9ecd4e3e49b1d268120 /NEWS
parent7c8df0b9441e34928f2d7d70531e3d55e016c32e (diff)
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Refer to C23 in place of C2X in glibc
WG14 decided to use the name C23 as the informal name of the next revision of the C standard (notwithstanding the publication date in 2024). Update references to C2X in glibc to use the C23 name. This is intended to update everything *except* where it involves renaming files (the changes involving renaming tests are intended to be done separately). In the case of the _ISOC2X_SOURCE feature test macro - the only user-visible interface involved - support for that macro is kept for backwards compatibility, while adding _ISOC23_SOURCE. Tested for x86_64.
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diff --git a/NEWS b/NEWS
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--- a/NEWS
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@@ -14,6 +14,13 @@ Major new features:
in order to support unsigned __int128 and/or unsigned _BitInt(N) operands
with arbitrary precisions when supported by the target.
+* The GNU C Library now supports a feature test macro _ISOC23_SOURCE to
+ enable features from the ISO C23 standard. Only some features from
+ this standard are supported by the GNU C Library. The older name
+ _ISOC2X_SOURCE is still supported. Features from C23 are also enabled
+ by _GNU_SOURCE, or by compiling with the GCC options -std=c23,
+ -std=gnu23, -std=c2x or -std=gnu2x.
+
Deprecated and removed features, and other changes affecting compatibility:
[Add deprecations, removals and changes affecting compatibility here]