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Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/NEWS b/NEWS index 922a5004ff..4fe8886e83 100644 --- a/NEWS +++ b/NEWS @@ -22,6 +22,19 @@ Version 2.25 from that TS. Note that most features from that TS are not supported by the GNU C Library. +* The nonstandard feature selection macros _REENTRANT and _THREAD_SAFE are + now treated as compatibility synonyms for _POSIX_C_SOURCE=199506L. + Since the GNU C Library defaults to a much newer revision of POSIX, this + will only affect programs that specifically request an old conformance + mode. For instance, a program compiled with -std=c89 -D_REENTRANT will + see a change in the visible declarations, but a program compiled with + just -D_REENTRANT, or -std=c99 -D_POSIX_C_SOURCE=200809L -D_REENTRANT, + will not. + + Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be + defined by all multithreaded code, but glibc has not required this for + many years. + * The inclusion of <sys/sysmacros.h> by <sys/types.h> is deprecated. This means that in a future release, the macros “major”, “minor”, and “makedev” will only be available from <sys/sysmacros.h>. |