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Update from Gnulib

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This incorporates:
2019-10-11 Simplify and regularize regex use of ‘assert’
2019-10-09 regex: omit debug assignment when not debugging
2019-10-09 regex: tell compiler there’s at most 256 arcs out
2019-10-09 regex: simplify by assuming C99
2019-10-09 regex: avoid copying of uninitialized storage
2019-09-29 fbufmode: Fix compilation error on glibc >= 2.28 systems
2019-09-28 Update comments that refer to POSIX
2019-09-23 Update URLs and associated text
* doc/misc/texinfo.tex, lib/open.c, lib/regcomp.c:
* lib/regex_internal.c, lib/regex_internal.h, lib/regexec.c:
* lib/stdio-impl.h:
Copy from Gnulib.
This commit is contained in:
Paul Eggert 2019-10-11 18:23:47 -07:00
parent f9d8babe6a
commit 4b60e0722d
7 changed files with 78 additions and 125 deletions
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16
lib/open.c
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@ -92,9 +92,13 @@ open (const char *filename, int flags, ...)
#endif
#if OPEN_TRAILING_SLASH_BUG
/* If the filename ends in a slash and one of O_CREAT, O_WRONLY, O_RDWR
is specified, then fail.
Rationale: POSIX <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html>
/* Fail if one of O_CREAT, O_WRONLY, O_RDWR is specified and the filename
ends in a slash, as POSIX says such a filename must name a directory
<https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13>:
"A pathname that contains at least one non-<slash> character and that
ends with one or more trailing <slash> characters shall not be resolved
successfully unless the last pathname component before the trailing
<slash> characters names an existing directory"
If the named file already exists as a directory, then
- if O_CREAT is specified, open() must fail because of the semantics
of O_CREAT,
@ -164,6 +168,12 @@ open (const char *filename, int flags, ...)
#if OPEN_TRAILING_SLASH_BUG
/* If the filename ends in a slash and fd does not refer to a directory,
then fail.
Rationale: POSIX says such a filename must name a directory
<https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13>:
"A pathname that contains at least one non-<slash> character and that
ends with one or more trailing <slash> characters shall not be resolved
successfully unless the last pathname component before the trailing
<slash> characters names an existing directory"
If the named file without the slash is not a directory, open() must fail
with ENOTDIR. */
if (fd >= 0)