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| author | Florian Weimer <fweimer@redhat.com> | 2019-02-18 11:49:54 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2019-02-18 16:37:00 +0100 |
| commit | a5406364ac949f91867352cb2ae867629f083c5b (patch) | |
| tree | 0aeeedc3748d3b21cf8e8ea2e670670df1e441db /ChangeLog | |
| parent | 6c29942cbf059aca47fd4bbd852ea42c9d46b71f (diff) | |
| download | glibc-a5406364ac949f91867352cb2ae867629f083c5b.zip glibc-a5406364ac949f91867352cb2ae867629f083c5b.tar.gz glibc-a5406364ac949f91867352cb2ae867629f083c5b.tar.bz2 | |
libio: Eliminate _IO_stdin, _IO_stdout, _IO_stderr
These variables are only used to determine if a stdio stream is
a pre-allocated stream, but it is possible to do so by comparing
a FILE * to all pre-allocated stream objects. As a result, it is
not necessary to keep those pointers in separate variables.
Behavior with symbol interposition is unchanged because _IO_stdin_,
_IO_stdout_, _IO_stderr_ are exported, and refer to objects outside of
libc if symbol interposition or copy relocations are involved. (The
removed variables _IO_stdin, _IO_stdout, _IO_stderr were not exported,
of course.)
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 21 |
1 files changed, 21 insertions, 0 deletions
@@ -1,3 +1,24 @@ +2019-02-18 Florian Weimer <fweimer@redhat.com> + + * libio/libio.h (_IO_stdin, _IO_stdout, _IO_stderr): Remove + declaration. + * libio/stdio.c (AL, AL2, _IO_stdin, _IO_stdout, _IO_stderr): + Remove definitions. + * libio/stdfiles.c: Update comment. + * libio/oldstdfiles.c (_IO_check_libio): Update comment. Do not + set _IO_stdin, _IO_stdout, _IO_stderr. + * libio/libioP.h (_IO_fake_stdiobuf): Remove unused declaration. + [SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)] (_IO_legacy_file): New + inline function. + (_IO_deallocate_file): New inline function. + * libio/iolibio.h (_IO_vprintf): Remove definition. + * libio/iofclose.c (_IO_new_fclose): Use _IO_deallocate_file. + * libio/oldiofclose.c (_IO_old_fclose): Likewise. + * libio/iofwide.c (_IO_fwide): Use __glibc_unlikely and + _IO_legacy_file. + * libio/oldfileops.c (_IO_old_file_init_internal): Remove + __builtin_expect. Use _IO_legacy_file. + 2019-02-18 Stefan Liebler <stli@linux.ibm.com> * sysdeps/unix/sysv/linux/tst-clone3.c (do_test): |