extras/tools/bison-macOS-c41f233c.patch

   1 From c41f233c4c38e84023a16339782ee306f03e7f59 Mon Sep 17 00:00:00 2001
   2 From: Paul Eggert <eggert@cs.ucla.edu>
   3 Date: Fri, 7 Jul 2017 14:10:20 -0700
   4 Subject: vasnprintf: port to macOS 10.13
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 Problem reported by comex in:
  10 http://lists.gnu.org/archive/html/bug-gnulib/2017-07/msg00056.html
  11 * lib/vasnprintf.c (VASNPRINTF): Don’t use %n on macOS.
  12 ---
  13  lib/vasnprintf.c | 9 ++++++++-
  14  2 files changed, 15 insertions(+), 1 deletion(-)
  15
  16 diff --git a/lib/vasnprintf.c b/lib/vasnprintf.c
  17 index 9c2af0e..fecaf27 100644
  18 --- a/lib/vasnprintf.c
  19 +++ b/lib/vasnprintf.c
  20 @@ -4869,7 +4869,11 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
  21  #endif
  22                    *fbp = dp->conversion;
  23  #if USE_SNPRINTF
  24 -# if !(((__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined __UCLIBC__) || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
  25 +# if ! (((__GLIBC__ > 2                                                 \
  26 +          || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3))                  \
  27 +         && !defined __UCLIBC__)                                        \
  28 +        || (defined __APPLE__ && defined __MACH__)                      \
  29 +        || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
  30                  fbp[1] = '%';
  31                  fbp[2] = 'n';
  32                  fbp[3] = '\0';
  33 @@ -4883,6 +4887,9 @@ VASNPRINTF (DCHAR_T *resultbuf, size_t *lengthp,
  34                     in format strings in writable memory may crash the program
  35                     (if compiled with _FORTIFY_SOURCE=2), so we should avoid it
  36                     in this situation.  */
  37 +                /* macOS 10.13 High Sierra behaves like glibc with
  38 +                   _FORTIFY_SOURCE=2, and older macOS releases
  39 +                   presumably do not need %n.  */
  40                  /* On native Windows systems (such as mingw), we can avoid using
  41                     %n because:
  42                       - Although the gl_SNPRINTF_TRUNCATION_C99 test fails,
  43 --
  44 cgit v1.0-41-gc330
  45