master afbdae00ab5 1/2: Update from Gnulib by running admin/merge-gnulib

[Paul Eggert]

branch: master
commit afbdae00ab59bbda971780fa04dd75dc7d1e7df7
Author: Paul Eggert <eggert@cs.ucla.edu>
Commit: Paul Eggert <eggert@cs.ucla.edu>

    Update from Gnulib by running admin/merge-gnulib
---
 lib/nstrftime.c    | 44 ++++++++++++++++++++++++++++----------------
 lib/stat-time.h    |  3 +--
 lib/timespec-add.c |  5 +++--
 lib/timespec-sub.c |  5 +++--
 4 files changed, 35 insertions(+), 22 deletions(-)

diff --git a/lib/nstrftime.c b/lib/nstrftime.c
index 68bb560910d..2a1dd8d88d7 100644
--- a/lib/nstrftime.c
+++ b/lib/nstrftime.c
@@ -62,6 +62,7 @@ extern char *tzname[];
 #endif
 
 #include <limits.h>
+#include <stdckdint.h>
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
@@ -226,15 +227,6 @@ extern char *tzname[];
 #  undef __mbsrtowcs_l
 #  define __mbsrtowcs_l(d, s, l, st, loc) __mbsrtowcs (d, s, l, st)
 # endif
-# define widen(os, ws, l) \
-  {                                                                           \
-    mbstate_t __st;                                                           \
-    const char *__s = os;                                                     \
-    memset (&__st, '\0', sizeof (__st));                                      \
-    l = __mbsrtowcs_l (NULL, &__s, 0, &__st, loc);                            \
-    ws = (wchar_t *) alloca ((l + 1) * sizeof (wchar_t));                     \
-    (void) __mbsrtowcs_l (ws, &__s, l, &__st, loc);                           \
-  }
 #endif
 
 
@@ -684,8 +676,8 @@ __strftime_internal (STREAM_OR_CHAR_T *s, STRFTIME_ARG 
(size_t maxsize)
           width = 0;
           do
             {
-              if (INT_MULTIPLY_WRAPV (width, 10, &width)
-                  || INT_ADD_WRAPV (width, *f - L_('0'), &width))
+              if (ckd_mul (&width, width, 10)
+                  || ckd_add (&width, width, *f - L_('0')))
                 width = INT_MAX;
               ++f;
             }
@@ -1374,11 +1366,31 @@ __strftime_internal (STREAM_OR_CHAR_T *s, STRFTIME_ARG 
(size_t maxsize)
 #ifdef COMPILE_WIDE
           {
             /* The zone string is always given in multibyte form.  We have
-               to transform it first.  */
-            wchar_t *wczone;
-            size_t len;
-            widen (zone, wczone, len);
-            cpy (len, wczone);
+               to convert it to wide character.  */
+            size_t w = pad == L_('-') || width < 0 ? 0 : width;
+            char const *z = zone;
+            mbstate_t st = {0};
+            size_t len = __mbsrtowcs_l (p, &z, maxsize - i, &st, loc);
+            if (len == (size_t) -1)
+              return 0;
+            size_t incr = len < w ? w : len;
+            if (incr >= maxsize - i)
+              {
+                errno = ERANGE;
+                return 0;
+              }
+            if (p)
+              {
+                if (len < w)
+                  {
+                    size_t delta = w - len;
+                    wmemmove (p + delta, p, len);
+                    wchar_t wc = pad == L_('0') || pad == L_('+') ? L'0' : L' 
';
+                    wmemset (p, wc, delta);
+                  }
+                p += incr;
+              }
+            i += incr;
           }
 #else
           cpy (strlen (zone), zone);
diff --git a/lib/stat-time.h b/lib/stat-time.h
index af084102dae..75eb27e549d 100644
--- a/lib/stat-time.h
+++ b/lib/stat-time.h
@@ -221,8 +221,7 @@ stat_time_normalize (int result, _GL_UNUSED struct stat *st)
             }
           ts->tv_nsec = r;
           /* Overflow is possible, as Solaris 11 stat can yield
-             tv_sec == TYPE_MINIMUM (time_t) && tv_nsec == -1000000000.
-             INT_ADD_WRAPV is OK, since time_t is signed on Solaris.  */
+             tv_sec == TYPE_MINIMUM (time_t) && tv_nsec == -1000000000.  */
           if (ckd_add (&ts->tv_sec, q, ts->tv_sec))
             {
               errno = EOVERFLOW;
diff --git a/lib/timespec-add.c b/lib/timespec-add.c
index cb3017803b4..38c4dfc24c2 100644
--- a/lib/timespec-add.c
+++ b/lib/timespec-add.c
@@ -23,6 +23,7 @@
 #include <config.h>
 #include "timespec.h"
 
+#include <stdckdint.h>
 #include "intprops.h"
 
 struct timespec
@@ -38,7 +39,7 @@ timespec_add (struct timespec a, struct timespec b)
     {
       rns = nsd;
       time_t bs1;
-      if (!INT_ADD_WRAPV (bs, 1, &bs1))
+      if (!ckd_add (&bs1, bs, 1))
         bs = bs1;
       else if (rs < 0)
         rs++;
@@ -46,7 +47,7 @@ timespec_add (struct timespec a, struct timespec b)
         goto high_overflow;
     }
 
-  if (INT_ADD_WRAPV (rs, bs, &rs))
+  if (ckd_add (&rs, rs, bs))
     {
       if (bs < 0)
         {
diff --git a/lib/timespec-sub.c b/lib/timespec-sub.c
index 822c2831089..f8052400410 100644
--- a/lib/timespec-sub.c
+++ b/lib/timespec-sub.c
@@ -24,6 +24,7 @@
 #include <config.h>
 #include "timespec.h"
 
+#include <stdckdint.h>
 #include "intprops.h"
 
 struct timespec
@@ -38,7 +39,7 @@ timespec_sub (struct timespec a, struct timespec b)
     {
       rns = ns + TIMESPEC_HZ;
       time_t bs1;
-      if (!INT_ADD_WRAPV (bs, 1, &bs1))
+      if (!ckd_add (&bs1, bs, 1))
         bs = bs1;
       else if (- TYPE_SIGNED (time_t) < rs)
         rs--;
@@ -46,7 +47,7 @@ timespec_sub (struct timespec a, struct timespec b)
         goto low_overflow;
     }
 
-  if (INT_SUBTRACT_WRAPV (rs, bs, &rs))
+  if (ckd_sub (&rs, rs, bs))
     {
       if (0 < bs)
         {