Update from Gnulib

This incorporates: 2019-09-22 Update some URLs 2019-09-15 fcntl-h: fix compilation error of creat.c on MSVC 2019-09-15 creat: new module 2019-09-15 access: new module 2019-09-09 Add option to assume best, not worst, when cross-compiling. * build-aux/config.guess, build-aux/config.sub, doc/misc/texinfo.tex: * lib/careadlinkat.c, lib/careadlinkat.h, lib/count-leading-zeros.h: * lib/count-trailing-zeros.h, lib/diffseq.h, lib/fcntl.in.h: * lib/ftoastr.c, lib/get-permissions.c: * lib/ieee754.in.h, lib/inttypes.in.h, lib/mktime.c, lib/open.c: * lib/pathmax.h, lib/pipe2.c, lib/stddef.in.h, lib/stdint.in.h: * lib/stdlib.in.h, lib/str-two-way.h, lib/string.in.h, lib/time.in.h: * lib/timegm.c, lib/unistd.in.h, m4/canonicalize.m4: * m4/extern-inline.m4, m4/fcntl_h.m4, m4/fdopendir.m4: * m4/getgroups.m4, m4/getopt.m4, m4/gettimeofday.m4: * m4/gnulib-common.m4, m4/largefile.m4: * m4/lstat.m4, m4/memmem.m4, m4/mktime.m4, m4/nocrash.m4, m4/open.m4: * m4/pselect.m4, m4/putenv.m4, m4/readlink.m4, m4/regex.m4: * m4/symlink.m4, m4/unistd_h.m4, m4/utimens.m4, m4/utimes.m4: Copy from Gnulib. * lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate. * m4/open-slash.m4: New file, copied from Gnulib.
author: Paul Eggert <eggert@cs.ucla.edu> 2019-09-22 23:50:59 -0700
committer: Paul Eggert <eggert@cs.ucla.edu> 2019-09-22 23:51:44 -0700
commit: 78669517dc3db4d6d51fb26d71073fc0c196ab5d (patch)
tree: a3dff006cf177da51fd6458203d8e4751e36e78b /lib
parent: a33cda168e35cb93cdf115f7d12765f590226601 (diff)
download: emacs-78669517dc3db4d6d51fb26d71073fc0c196ab5d.tar.gz
23 files changed, 114 insertions, 77 deletions
diff --git a/lib/careadlinkat.c b/lib/careadlinkat.c
index e56d5030856..480326577c1 100644
--- a/lib/careadlinkat.c
+++ b/lib/careadlinkat.c
@@ -54,7 +54,7 @@
 
    The PREADLINKAT function specifies how to read links.  It operates
    like POSIX readlinkat()
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html>
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html>
    but can assume that its first argument is the same as FD.
 
    If successful, return the buffer address; otherwise return NULL and
diff --git a/lib/careadlinkat.h b/lib/careadlinkat.h
index 68b69aa8893..3c08fd6d102 100644
--- a/lib/careadlinkat.h
+++ b/lib/careadlinkat.h
@@ -40,7 +40,7 @@ struct allocator;
 
    The PREADLINKAT function specifies how to read links.  It operates
    like POSIX readlinkat()
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html>
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html>
    but can assume that its first argument is the same as FD.
 
    If successful, return the buffer address; otherwise return NULL and
diff --git a/lib/count-leading-zeros.h b/lib/count-leading-zeros.h
index e5ac2e12606..cf867acc530 100644
--- a/lib/count-leading-zeros.h
+++ b/lib/count-leading-zeros.h
@@ -71,7 +71,7 @@ COUNT_LEADING_ZEROS_INLINE int
 count_leading_zeros_32 (unsigned int x)
 {
   /* <https://github.com/gibsjose/BitHacks>
-     <http://www.fit.vutbr.cz/~ibarina/pub/bithacks.pdf> */
+     <https://www.fit.vutbr.cz/~ibarina/pub/bithacks.pdf> */
   static const char de_Bruijn_lookup[32] = {
     31, 22, 30, 21, 18, 10, 29, 2, 20, 17, 15, 13, 9, 6, 28, 1,
     23, 19, 11, 3, 16, 14, 7, 24, 12, 4, 8, 25, 5, 26, 27, 0
diff --git a/lib/count-trailing-zeros.h b/lib/count-trailing-zeros.h
index 3f78696e30f..7988e4bff44 100644
--- a/lib/count-trailing-zeros.h
+++ b/lib/count-trailing-zeros.h
@@ -69,7 +69,7 @@ COUNT_TRAILING_ZEROS_INLINE int
 count_trailing_zeros_32 (unsigned int x)
 {
   /* <https://github.com/gibsjose/BitHacks>
-     <http://www.fit.vutbr.cz/~ibarina/pub/bithacks.pdf> */
+     <https://www.fit.vutbr.cz/~ibarina/pub/bithacks.pdf> */
   static const char de_Bruijn_lookup[32] = {
     0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8,
     31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9
diff --git a/lib/diffseq.h b/lib/diffseq.h
index c6aac3d8120..c48da0c98d9 100644
--- a/lib/diffseq.h
+++ b/lib/diffseq.h
@@ -28,13 +28,13 @@
    The basic algorithm is described in:
    "An O(ND) Difference Algorithm and its Variations", Eugene W. Myers,
    Algorithmica Vol. 1, 1986, pp. 251-266,
-   <http://dx.doi.org/10.1007/BF01840446>.
+   <https://doi.org/10.1007/BF01840446>.
    See especially section 4.2, which describes the variation used below.
 
    The basic algorithm was independently discovered as described in:
    "Algorithms for Approximate String Matching", Esko Ukkonen,
    Information and Control Vol. 64, 1985, pp. 100-118,
-   <http://dx.doi.org/10.1016/S0019-9958(85)80046-2>.
+   <https://doi.org/10.1016/S0019-9958(85)80046-2>.
 
    Unless the 'find_minimal' flag is set, this code uses the TOO_EXPENSIVE
    heuristic, by Paul Eggert, to limit the cost to O(N**1.5 log N)
diff --git a/lib/fcntl.in.h b/lib/fcntl.in.h
index eb70dc61eca..abe7993e21c 100644
--- a/lib/fcntl.in.h
+++ b/lib/fcntl.in.h
@@ -39,6 +39,12 @@
 #endif
 #@INCLUDE_NEXT@ @NEXT_FCNTL_H@
 
+/* Native Windows platforms declare open(), creat() in <io.h>.  */
+#if (@GNULIB_CREAT@ || @GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \
+    && (defined _WIN32 && ! defined __CYGWIN__)
+# include <io.h>
+#endif
+
 #else
 /* Normal invocation convention.  */
 
@@ -59,6 +65,12 @@
 /* The include_next requires a split double-inclusion guard.  */
 #@INCLUDE_NEXT@ @NEXT_FCNTL_H@
 
+/* Native Windows platforms declare open(), creat() in <io.h>.  */
+#if (@GNULIB_CREAT@ || @GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \
+    && (defined _WIN32 && ! defined __CYGWIN__)
+# include <io.h>
+#endif
+
 #ifndef _@GUARD_PREFIX@_FCNTL_H
 #define _@GUARD_PREFIX@_FCNTL_H
 
@@ -66,12 +78,6 @@
 # include <unistd.h>
 #endif
 
-/* Native Windows platforms declare open(), creat() in <io.h>.  */
-#if (@GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \
-    && (defined _WIN32 && ! defined __CYGWIN__)
-# include <io.h>
-#endif
-
 
 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
 
@@ -82,6 +88,26 @@
 
 /* Declare overridden functions.  */
 
+#if @GNULIB_CREAT@
+# if @REPLACE_CREAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef creat
+#   define creat rpl_creat
+#  endif
+_GL_FUNCDECL_RPL (creat, int, (const char *filename, mode_t mode)
+                             _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (creat, int, (const char *filename, mode_t mode));
+# else
+_GL_CXXALIAS_SYS (creat, int, (const char *filename, mode_t mode));
+# endif
+_GL_CXXALIASWARN (creat);
+#elif defined GNULIB_POSIXCHECK
+# undef creat
+/* Assume creat is always declared.  */
+_GL_WARN_ON_USE (creat, "creat is not always POSIX compliant - "
+                 "use gnulib module creat for portability");
+#endif
+
 #if @GNULIB_FCNTL@
 # if @REPLACE_FCNTL@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
diff --git a/lib/ftoastr.c b/lib/ftoastr.c
index 55f1e02e80f..ffd51d638c5 100644
--- a/lib/ftoastr.c
+++ b/lib/ftoastr.c
@@ -105,7 +105,7 @@ FTOASTR (char *buf, size_t bufsize, int flags, int width, FLOAT x)
 
      Andrysco M, Jhala R, Lerner S. Printing floating-point numbers:
      a faster, always correct method. ACM SIGPLAN notices - POPL '16.
-     2016;51(1):555-67 <http://dx.doi.org/10.1145/2914770.2837654>; draft at
+     2016;51(1):555-67 <https://doi.org/10.1145/2914770.2837654>; draft at
      <https://cseweb.ucsd.edu/~lerner/papers/fp-printing-popl16.pdf>.  */
 
   PROMOTED_FLOAT promoted_x = x;
diff --git a/lib/get-permissions.c b/lib/get-permissions.c
index 99b4664aae7..aa78d7abf1e 100644
--- a/lib/get-permissions.c
+++ b/lib/get-permissions.c
@@ -108,7 +108,7 @@ get_permissions (const char *name, int desc, mode_t mode,
      When fetching the source ACL, we simply fetch both ACL types.
      When setting the destination ACL, we try either ACL types, assuming
      that the kernel will translate the ACL from one form to the other.
-     (See in <http://docs.sun.com/app/docs/doc/819-2241/6n4huc7ia?l=en&a=view>
+     (See in <https://docs.oracle.com/cd/E86824_01/html/E54765/acl-2.html>
      the description of ENOTSUP.)  */
   for (;;)
     {
diff --git a/lib/gnulib.mk.in b/lib/gnulib.mk.in
index 79580e931ab..9a2709c22a7 100644
--- a/lib/gnulib.mk.in
+++ b/lib/gnulib.mk.in
@@ -249,6 +249,7 @@ GL_GENERATE_STDINT_H = @GL_GENERATE_STDINT_H@
 GMALLOC_OBJ = @GMALLOC_OBJ@
 GMP_LIB = @GMP_LIB@
 GMP_OBJ = @GMP_OBJ@
+GNULIB_ACCESS = @GNULIB_ACCESS@
 GNULIB_ALPHASORT = @GNULIB_ALPHASORT@
 GNULIB_ATOLL = @GNULIB_ATOLL@
 GNULIB_CALLOC_POSIX = @GNULIB_CALLOC_POSIX@
@@ -258,6 +259,7 @@ GNULIB_CHOWN = @GNULIB_CHOWN@
 GNULIB_CLOSE = @GNULIB_CLOSE@
 GNULIB_CLOSEDIR = @GNULIB_CLOSEDIR@
 GNULIB_COPY_FILE_RANGE = @GNULIB_COPY_FILE_RANGE@
+GNULIB_CREAT = @GNULIB_CREAT@
 GNULIB_CTIME = @GNULIB_CTIME@
 GNULIB_DIRFD = @GNULIB_DIRFD@
 GNULIB_DPRINTF = @GNULIB_DPRINTF@
@@ -838,11 +840,13 @@ PTHREAD_H_DEFINES_STRUCT_TIMESPEC = @PTHREAD_H_DEFINES_STRUCT_TIMESPEC@
 PTRDIFF_T_SUFFIX = @PTRDIFF_T_SUFFIX@
 RALLOC_OBJ = @RALLOC_OBJ@
 RANLIB = @RANLIB@
+REPLACE_ACCESS = @REPLACE_ACCESS@
 REPLACE_CALLOC = @REPLACE_CALLOC@
 REPLACE_CANONICALIZE_FILE_NAME = @REPLACE_CANONICALIZE_FILE_NAME@
 REPLACE_CHOWN = @REPLACE_CHOWN@
 REPLACE_CLOSE = @REPLACE_CLOSE@
 REPLACE_CLOSEDIR = @REPLACE_CLOSEDIR@
+REPLACE_CREAT = @REPLACE_CREAT@
 REPLACE_CTIME = @REPLACE_CTIME@
 REPLACE_DIRFD = @REPLACE_DIRFD@
 REPLACE_DPRINTF = @REPLACE_DPRINTF@
@@ -1609,12 +1613,14 @@ fcntl.h: fcntl.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H)
 	      -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
 	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
 	      -e 's|@''NEXT_FCNTL_H''@|$(NEXT_FCNTL_H)|g' \
+	      -e 's/@''GNULIB_CREAT''@/$(GNULIB_CREAT)/g' \
 	      -e 's/@''GNULIB_FCNTL''@/$(GNULIB_FCNTL)/g' \
 	      -e 's/@''GNULIB_NONBLOCKING''@/$(GNULIB_NONBLOCKING)/g' \
 	      -e 's/@''GNULIB_OPEN''@/$(GNULIB_OPEN)/g' \
 	      -e 's/@''GNULIB_OPENAT''@/$(GNULIB_OPENAT)/g' \
 	      -e 's|@''HAVE_FCNTL''@|$(HAVE_FCNTL)|g' \
 	      -e 's|@''HAVE_OPENAT''@|$(HAVE_OPENAT)|g' \
+	      -e 's|@''REPLACE_CREAT''@|$(REPLACE_CREAT)|g' \
 	      -e 's|@''REPLACE_FCNTL''@|$(REPLACE_FCNTL)|g' \
 	      -e 's|@''REPLACE_OPEN''@|$(REPLACE_OPEN)|g' \
 	      -e 's|@''REPLACE_OPENAT''@|$(REPLACE_OPENAT)|g' \
@@ -3176,6 +3182,7 @@ unistd.h: unistd.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H
 	      -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
 	      -e 's|@''NEXT_UNISTD_H''@|$(NEXT_UNISTD_H)|g' \
 	      -e 's|@''WINDOWS_64_BIT_OFF_T''@|$(WINDOWS_64_BIT_OFF_T)|g' \
+	      -e 's/@''GNULIB_ACCESS''@/$(GNULIB_ACCESS)/g' \
 	      -e 's/@''GNULIB_CHDIR''@/$(GNULIB_CHDIR)/g' \
 	      -e 's/@''GNULIB_CHOWN''@/$(GNULIB_CHOWN)/g' \
 	      -e 's/@''GNULIB_CLOSE''@/$(GNULIB_CLOSE)/g' \
@@ -3275,7 +3282,8 @@ unistd.h: unistd.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H
 	      -e 's|@''HAVE_OS_H''@|$(HAVE_OS_H)|g' \
 	      -e 's|@''HAVE_SYS_PARAM_H''@|$(HAVE_SYS_PARAM_H)|g' \
 	  | \
-	  sed -e 's|@''REPLACE_CHOWN''@|$(REPLACE_CHOWN)|g' \
+	  sed -e 's|@''REPLACE_ACCESS''@|$(REPLACE_ACCESS)|g' \
+	      -e 's|@''REPLACE_CHOWN''@|$(REPLACE_CHOWN)|g' \
 	      -e 's|@''REPLACE_CLOSE''@|$(REPLACE_CLOSE)|g' \
 	      -e 's|@''REPLACE_DUP''@|$(REPLACE_DUP)|g' \
 	      -e 's|@''REPLACE_DUP2''@|$(REPLACE_DUP2)|g' \
diff --git a/lib/ieee754.in.h b/lib/ieee754.in.h
index a079e59d791..586455384cf 100644
--- a/lib/ieee754.in.h
+++ b/lib/ieee754.in.h
@@ -13,7 +13,7 @@
 
    You should have received a copy of the GNU General Public
    License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _IEEE754_H
 
diff --git a/lib/inttypes.in.h b/lib/inttypes.in.h
index d3c735c12ce..31e40c51a68 100644
--- a/lib/inttypes.in.h
+++ b/lib/inttypes.in.h
@@ -17,7 +17,7 @@
 
 /*
  * ISO C 99 <inttypes.h> for platforms that lack it.
- * <http://www.opengroup.org/susv3xbd/inttypes.h.html>
+ * <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/inttypes.h.html>
  */
 
 #if __GNUC__ >= 3
diff --git a/lib/mktime.c b/lib/mktime.c
index b00af96c8c4..d45eee85ec8 100644
--- a/lib/mktime.c
+++ b/lib/mktime.c
@@ -78,7 +78,7 @@ my_tzset (void)
        - Time zone names based on geography, without slashes, e.g.
          "Singapore".
        - Time zone names that contain explicit DST rules.  Syntax: see
-         <http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_03>
+         <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_03>
      The Microsoft CRT understands only the first kind.  It produces incorrect
      results if the value of TZ is of the other kinds.
      But in a Cygwin environment, /etc/profile.d/tzset.sh sets TZ to a value
diff --git a/lib/open.c b/lib/open.c
index 655260572d4..4572ebf6cd2 100644
--- a/lib/open.c
+++ b/lib/open.c
@@ -94,20 +94,13 @@ open (const char *filename, int flags, ...)
 #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 <http://www.opengroup.org/susv3/basedefs/xbd_chap04.html>
-     says that
-       "A pathname that contains at least one non-slash character and that
-        ends with one or more trailing slashes shall be resolved as if a
-        single dot character ( '.' ) were appended to the pathname."
-     and
-       "The special filename dot shall refer to the directory specified by
-        its predecessor."
+     Rationale: POSIX <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html>
      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,
        - if O_WRONLY or O_RDWR is specified, open() must fail because POSIX
-         <http://www.opengroup.org/susv3/functions/open.html> says that it
-         fails with errno = EISDIR in this case.
+         <https://pubs.opengroup.org/onlinepubs/9699919799/functions/open.html>
+         says that it fails with errno = EISDIR in this case.
      If the named file does not exist or does not name a directory, then
        - if O_CREAT is specified, open() must fail since open() cannot create
          directories,
@@ -171,14 +164,6 @@ 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 <http://www.opengroup.org/susv3/basedefs/xbd_chap04.html>
-     says that
-       "A pathname that contains at least one non-slash character and that
-        ends with one or more trailing slashes shall be resolved as if a
-        single dot character ( '.' ) were appended to the pathname."
-     and
-       "The special filename dot shall refer to the directory specified by
-        its predecessor."
      If the named file without the slash is not a directory, open() must fail
      with ENOTDIR.  */
   if (fd >= 0)
diff --git a/lib/pathmax.h b/lib/pathmax.h
index 9463a1fb2c6..4287d15870c 100644
--- a/lib/pathmax.h
+++ b/lib/pathmax.h
@@ -20,7 +20,7 @@
 
 /* POSIX:2008 defines PATH_MAX to be the maximum number of bytes in a filename,
    including the terminating NUL byte.
-   <http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/limits.h.html>
+   <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/limits.h.html>
    PATH_MAX is not defined on systems which have no limit on filename length,
    such as GNU/Hurd.
 
diff --git a/lib/pipe2.c b/lib/pipe2.c
index 15a5dec9852..134d9f11fc0 100644
--- a/lib/pipe2.c
+++ b/lib/pipe2.c
@@ -107,7 +107,7 @@ pipe2 (int fd[2], int flags)
   if (pipe (fd) < 0)
     return -1;
 
-  /* POSIX <http://www.opengroup.org/onlinepubs/9699919799/functions/pipe.html>
+  /* POSIX <https://pubs.opengroup.org/onlinepubs/9699919799/functions/pipe.html>
      says that initially, the O_NONBLOCK and FD_CLOEXEC flags are cleared on
      both fd[0] and fd[1].  */
 
diff --git a/lib/stddef.in.h b/lib/stddef.in.h
index 5aad1210df0..945f19282d4 100644
--- a/lib/stddef.in.h
+++ b/lib/stddef.in.h
@@ -19,7 +19,7 @@
 
 /*
  * POSIX 2008 <stddef.h> for platforms that have issues.
- * <http://www.opengroup.org/susv3xbd/stddef.h.html>
+ * <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/stddef.h.html>
  */
 
 #if __GNUC__ >= 3
diff --git a/lib/stdint.in.h b/lib/stdint.in.h
index 21dd8d23e3c..d32de34da19 100644
--- a/lib/stdint.in.h
+++ b/lib/stdint.in.h
@@ -17,7 +17,7 @@
 
 /*
  * ISO C 99 <stdint.h> for platforms that lack it.
- * <http://www.opengroup.org/susv3xbd/stdint.h.html>
+ * <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/stdint.h.html>
  */
 
 #ifndef _@GUARD_PREFIX@_STDINT_H
diff --git a/lib/stdlib.in.h b/lib/stdlib.in.h
index f829525c104..e5583d967c1 100644
--- a/lib/stdlib.in.h
+++ b/lib/stdlib.in.h
@@ -238,8 +238,8 @@ _GL_WARN_ON_USE (getloadavg, "getloadavg is not portable - "
        element (or NULL if it doesn't contain an "=" sign),
      - It returns the index of the "token" in the given array of tokens.
    Otherwise it returns -1, and *OPTIONP and *VALUEP are undefined.
-   For more details see the POSIX:2001 specification.
-   http://www.opengroup.org/susv3xsh/getsubopt.html */
+   For more details see the POSIX specification.
+   https://pubs.opengroup.org/onlinepubs/9699919799/functions/getsubopt.html */
 # if !@HAVE_GETSUBOPT@
 _GL_FUNCDECL_SYS (getsubopt, int,
                   (char **optionp, char *const *tokens, char **valuep)
diff --git a/lib/str-two-way.h b/lib/str-two-way.h
index 7078c34bdc7..30806d26d64 100644
--- a/lib/str-two-way.h
+++ b/lib/str-two-way.h
@@ -49,7 +49,7 @@
    character shift table similar to the Boyer-Moore algorithm to
    achieve improved (potentially sub-linear) performance.
 
-   See http://www-igm.univ-mlv.fr/~lecroq/string/node26.html#SECTION00260,
+   See https://www-igm.univ-mlv.fr/~lecroq/string/node26.html#SECTION00260,
    https://en.wikipedia.org/wiki/Boyer-Moore_string_search_algorithm,
    https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.34.6641&rep=rep1&type=pdf
 */
diff --git a/lib/string.in.h b/lib/string.in.h
index 4a9292f74ad..c57f041c06d 100644
--- a/lib/string.in.h
+++ b/lib/string.in.h
@@ -693,7 +693,7 @@ _GL_WARN_ON_USE (strcasestr, "strcasestr does work correctly on character "
    This is a variant of strtok() that is multithread-safe.
 
    For the POSIX documentation for this function, see:
-   http://www.opengroup.org/susv3xsh/strtok.html
+   https://pubs.opengroup.org/onlinepubs/9699919799/functions/strtok.html
 
    Caveat: It modifies the original string.
    Caveat: These functions cannot be used on constant strings.
diff --git a/lib/time.in.h b/lib/time.in.h
index dd3b21273c9..40e5b2063fc 100644
--- a/lib/time.in.h
+++ b/lib/time.in.h
@@ -84,8 +84,8 @@ struct timespec
 # endif
 
 # if !GNULIB_defined_struct_time_t_must_be_integral
-/* Per http://austingroupbugs.net/view.php?id=327, POSIX requires
-   time_t to be an integer type, even though C99 permits floating
+/* https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_types.h.html
+   requires time_t to be an integer type, even though C99 permits floating
    point.  We don't know of any implementation that uses floating
    point, and it is much easier to write code that doesn't have to
    worry about that corner case, so we force the issue.  */
@@ -97,7 +97,7 @@ struct __time_t_must_be_integral {
 
 /* Sleep for at least RQTP seconds unless interrupted,  If interrupted,
    return -1 and store the remaining time into RMTP.  See
-   <http://www.opengroup.org/susv3xsh/nanosleep.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/nanosleep.html>.  */
 # if @GNULIB_NANOSLEEP@
 #  if @REPLACE_NANOSLEEP@
 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
@@ -153,8 +153,8 @@ _GL_CXXALIASWARN (mktime);
 # endif
 
 /* Convert TIMER to RESULT, assuming local time and UTC respectively.  See
-   <http://www.opengroup.org/susv3xsh/localtime_r.html> and
-   <http://www.opengroup.org/susv3xsh/gmtime_r.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/localtime_r.html> and
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/gmtime_r.html>.  */
 # if @GNULIB_TIME_R@
 #  if @REPLACE_LOCALTIME_R@
 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
@@ -203,8 +203,8 @@ _GL_CXXALIASWARN (gmtime_r);
 # endif
 
 /* Convert TIMER to RESULT, assuming local time and UTC respectively.  See
-   <http://www.opengroup.org/susv3xsh/localtime.html> and
-   <http://www.opengroup.org/susv3xsh/gmtime.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/localtime.html> and
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/gmtime.html>.  */
 # if @GNULIB_LOCALTIME@ || @REPLACE_LOCALTIME@
 #  if @REPLACE_LOCALTIME@
 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
@@ -237,7 +237,7 @@ _GL_CXXALIASWARN (gmtime);
 
 /* Parse BUF as a timestamp, assuming FORMAT specifies its layout, and store
    the resulting broken-down time into TM.  See
-   <http://www.opengroup.org/susv3xsh/strptime.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/strptime.html>.  */
 # if @GNULIB_STRPTIME@
 #  if ! @HAVE_STRPTIME@
 _GL_FUNCDECL_SYS (strptime, char *, (char const *restrict __buf,
@@ -252,7 +252,7 @@ _GL_CXXALIASWARN (strptime);
 # endif
 
 /* Convert *TP to a date and time string.  See
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/ctime.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/ctime.html>.  */
 # if @GNULIB_CTIME@
 #  if @REPLACE_CTIME@
 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
@@ -268,7 +268,7 @@ _GL_CXXALIASWARN (ctime);
 # endif
 
 /* Convert *TP to a date and time string.  See
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/strftime.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/strftime.html>.  */
 # if @GNULIB_STRFTIME@
 #  if @REPLACE_STRFTIME@
 #   if !(defined __cplusplus && defined GNULIB_NAMESPACE)
diff --git a/lib/timegm.c b/lib/timegm.c
index c440480cb2d..fc8c19fd3ea 100644
--- a/lib/timegm.c
+++ b/lib/timegm.c
@@ -15,7 +15,7 @@
 
    You should have received a copy of the GNU General Public
    License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _LIBC
 # include <libc-config.h>
diff --git a/lib/unistd.in.h b/lib/unistd.in.h
index 59ee39ecea5..cc57ce680d5 100644
--- a/lib/unistd.in.h
+++ b/lib/unistd.in.h
@@ -253,10 +253,28 @@ _GL_INLINE_HEADER_BEGIN
 /* Declare overridden functions.  */
 
 
-#if defined GNULIB_POSIXCHECK
+#if @GNULIB_ACCESS@
+# if @REPLACE_ACCESS@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef access
+#   define access rpl_access
+#  endif
+_GL_FUNCDECL_RPL (access, int, (const char *file, int mode)
+                               _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (access, int, (const char *file, int mode));
+# else
+_GL_CXXALIAS_SYS (access, int, (const char *file, int mode));
+# endif
+_GL_CXXALIASWARN (access);
+#elif defined GNULIB_POSIXCHECK
+# undef access
+# if HAVE_RAW_DECL_ACCESS
 /* The access() function is a security risk.  */
-_GL_WARN_ON_USE (access, "the access function is a security risk - "
+_GL_WARN_ON_USE (access, "access does not always support X_OK - "
+                 "use gnulib module access for portability; "
+                 "also, this function is a security risk - "
                  "use the gnulib module faccessat instead");
+# endif
 #endif
 
 
@@ -277,7 +295,7 @@ _GL_WARN_ON_USE (chown, "chdir is not always in <unistd.h> - "
    to GID (if GID is not -1).  Follow symbolic links.
    Return 0 if successful, otherwise -1 and errno set.
    See the POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/chown.html.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/chown.html.  */
 # if @REPLACE_CHOWN@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef chown
@@ -371,7 +389,7 @@ _GL_WARN_ON_USE (dup, "dup is unportable - "
    NEWFD = OLDFD, otherwise close NEWFD first if it is open.
    Return newfd if successful, otherwise -1 and errno set.
    See the POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/dup2.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/dup2.html>.  */
 # if @REPLACE_DUP2@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define dup2 rpl_dup2
@@ -526,7 +544,7 @@ _GL_WARN_ON_USE (faccessat, "faccessat is not portable - "
    the given file descriptor is open.
    Return 0 if successful, otherwise -1 and errno set.
    See the POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fchdir.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fchdir.html>.  */
 # if ! @HAVE_FCHDIR@
 _GL_FUNCDECL_SYS (fchdir, int, (int /*fd*/));
 
@@ -587,7 +605,7 @@ _GL_WARN_ON_USE (fchownat, "fchownat is not portable - "
 /* Synchronize changes to a file.
    Return 0 if successful, otherwise -1 and errno set.
    See POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fdatasync.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fdatasync.html>.  */
 # if !@HAVE_FDATASYNC@ || !@HAVE_DECL_FDATASYNC@
 _GL_FUNCDECL_SYS (fdatasync, int, (int fd));
 # endif
@@ -606,7 +624,7 @@ _GL_WARN_ON_USE (fdatasync, "fdatasync is unportable - "
 /* Synchronize changes, including metadata, to a file.
    Return 0 if successful, otherwise -1 and errno set.
    See POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/fsync.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/fsync.html>.  */
 # if !@HAVE_FSYNC@
 _GL_FUNCDECL_SYS (fsync, int, (int fd));
 # endif
@@ -625,7 +643,7 @@ _GL_WARN_ON_USE (fsync, "fsync is unportable - "
 /* Change the size of the file to which FD is opened to become equal to LENGTH.
    Return 0 if successful, otherwise -1 and errno set.
    See the POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/ftruncate.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/ftruncate.html>.  */
 # if @REPLACE_FTRUNCATE@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef ftruncate
@@ -655,7 +673,7 @@ _GL_WARN_ON_USE (ftruncate, "ftruncate is unportable - "
    Return BUF if successful, or NULL if the directory couldn't be determined
    or SIZE was too small.
    See the POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html>.
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html>.
    Additionally, the gnulib module 'getcwd' guarantees the following GNU
    extension: If BUF is NULL, an array is allocated with 'malloc'; the array
    is SIZE bytes long, unless SIZE == 0, in which case it is as big as
@@ -815,7 +833,7 @@ _GL_WARN_ON_USE (gethostname, "gethostname is unportable - "
 /* Returns the user's login name, or NULL if it cannot be found.  Upon error,
    returns NULL with errno set.
 
-   See <http://www.opengroup.org/susv3xsh/getlogin.html>.
+   See <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getlogin.html>.
 
    Most programs don't need to use this function, because the information is
    available through environment variables:
@@ -844,7 +862,7 @@ _GL_WARN_ON_USE (getlogin, "getlogin is unportable - "
    the case that the login name cannot be found but no specific error is
    provided (this case is hopefully rare but is left open by the POSIX spec).
 
-   See <http://www.opengroup.org/susv3xsh/getlogin.html>.
+   See <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getlogin.html>.
 
    Most programs don't need to use this function, because the information is
    available through environment variables:
@@ -1079,7 +1097,7 @@ _GL_WARN_ON_USE (isatty, "isatty has portability problems on native Windows - "
    to GID (if GID is not -1).  Do not follow symbolic links.
    Return 0 if successful, otherwise -1 and errno set.
    See the POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/lchown.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/lchown.html>.  */
 # if @REPLACE_LCHOWN@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef lchown
@@ -1109,7 +1127,7 @@ _GL_WARN_ON_USE (lchown, "lchown is unportable to pre-POSIX.1-2001 systems - "
 /* Create a new hard link for an existing file.
    Return 0 if successful, otherwise -1 and errno set.
    See POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/link.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/link.html>.  */
 # if @REPLACE_LINK@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define link rpl_link
@@ -1175,7 +1193,7 @@ _GL_WARN_ON_USE (linkat, "linkat is unportable - "
 /* Set the offset of FD relative to SEEK_SET, SEEK_CUR, or SEEK_END.
    Return the new offset if successful, otherwise -1 and errno set.
    See the POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/lseek.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/lseek.html>.  */
 # if @REPLACE_LSEEK@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define lseek rpl_lseek
@@ -1247,7 +1265,7 @@ _GL_WARN_ON_USE (pipe2, "pipe2 is unportable - "
    Return the number of bytes placed into BUF if successful, otherwise
    set errno and return -1.  0 indicates EOF.
    See the POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/pread.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/pread.html>.  */
 # if @REPLACE_PREAD@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef pread
@@ -1282,7 +1300,7 @@ _GL_WARN_ON_USE (pread, "pread is unportable - "
    Return the number of bytes written if successful, otherwise
    set errno and return -1.  0 indicates nothing written.  See the
    POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/pwrite.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/pwrite.html>.  */
 # if @REPLACE_PWRITE@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef pwrite
@@ -1315,7 +1333,7 @@ _GL_WARN_ON_USE (pwrite, "pwrite is unportable - "
 #if @GNULIB_READ@
 /* Read up to COUNT bytes from file descriptor FD into the buffer starting
    at BUF.  See the POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/read.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/read.html>.  */
 # if @REPLACE_READ@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef read
@@ -1339,7 +1357,7 @@ _GL_CXXALIASWARN (read);
    bytes of it into BUF.  Return the number of bytes placed into BUF if
    successful, otherwise -1 and errno set.
    See the POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html>.  */
 # if @REPLACE_READLINK@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   define readlink rpl_readlink
@@ -1449,7 +1467,7 @@ _GL_WARN_ON_USE (sethostname, "sethostname is unportable - "
 /* Pause the execution of the current thread for N seconds.
    Returns the number of seconds left to sleep.
    See the POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/sleep.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/sleep.html>.  */
 # if @REPLACE_SLEEP@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef sleep
@@ -1533,7 +1551,7 @@ _GL_WARN_ON_USE (symlinkat, "symlinkat is not portable - "
 /* Change the size of the file designated by FILENAME to become equal to LENGTH.
    Return 0 if successful, otherwise -1 and errno set.
    See the POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/truncate.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/truncate.html>.  */
 # if @REPLACE_TRUNCATE@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef truncate
@@ -1640,7 +1658,7 @@ _GL_WARN_ON_USE (unlinkat, "unlinkat is not portable - "
 /* Pause the execution of the current thread for N microseconds.
    Returns 0 on completion, or -1 on range error.
    See the POSIX:2001 specification
-   <http://www.opengroup.org/susv3xsh/usleep.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/009695399/functions/usleep.html>.  */
 # if @REPLACE_USLEEP@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef usleep
@@ -1667,7 +1685,7 @@ _GL_WARN_ON_USE (usleep, "usleep is unportable - "
 #if @GNULIB_WRITE@
 /* Write up to COUNT bytes starting at BUF to file descriptor FD.
    See the POSIX:2008 specification
-   <http://pubs.opengroup.org/onlinepubs/9699919799/functions/write.html>.  */
+   <https://pubs.opengroup.org/onlinepubs/9699919799/functions/write.html>.  */
 # if @REPLACE_WRITE@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
 #   undef write
author	Paul Eggert <eggert@cs.ucla.edu>	2019-09-22 23:50:59 -0700
committer	Paul Eggert <eggert@cs.ucla.edu>	2019-09-22 23:51:44 -0700
commit	78669517dc3db4d6d51fb26d71073fc0c196ab5d (patch)
tree	a3dff006cf177da51fd6458203d8e4751e36e78b /lib
parent	a33cda168e35cb93cdf115f7d12765f590226601 (diff)
download	emacs-78669517dc3db4d6d51fb26d71073fc0c196ab5d.tar.gz