[gtk-osx-users] vasnprintf() crash on macOS 10.13

[Jiří Techet <techet gmail com>]

Hi,

the vasnprintf() now intentionally crashes on macOS 10.13 when the formatting string contains %n and is dynamically allocated, for more, see

http://lists.gnu.org/archive/html/bug-gnulib/2017-07/msg00056.html

This problem affects all users of gnulib's vasnprintf implementation which are at least the following (found by find . -name "vasnprintf.c" in sources which I use for compiling Geany - but there may be more):

./pkg-config-0.29.2/glib/glib/gnulib/vasnprintf.c

./bison-3.0.4/lib/vasnprintf.c

./gettext-0.19.8/gettext-tools/libgettextpo/vasnprintf.c

./gettext-0.19.8/gettext-tools/gnulib-lib/vasnprintf.c

./gettext-0.19.8/gettext-runtime/intl/vasnprintf.c

./gettext-0.19.8/gettext-runtime/libasprintf/vasnprintf.c

./glib-2.52.2/glib/gnulib/vasnprintf.c

Without any change I get the first error when compiling bison:

  CCLD     src/bison

  GEN      doc/bison.help

/bin/sh: line 1: 77605 Illegal instruction: 4  src/bison --version > doc/bison.help.tmp

make[2]: *** [doc/bison.help] Error 132

make[1]: *** [all-recursive] Error 1

make: *** [all] Error 2

*** Error during phase build of bison: ########## Error running make -j 9  *** [17/24]

All of the above files should probably be patched - all of them already contain a fix for the same issue under Windows which behaves the same way - I just simply tried to add a simple condition "|| defined __APPLE__" to the place where this is tested and the Windows code seems to work fine. See the above gnulib mailing list link for more info.

Jiri