Let Gnulib deal with malloc/realloc 0

Instead of worrying about whether malloc and realloc yield a
non-null pointer when given size 0 (the traditional behavior
recommended by Doug McIlroy, and the only behavior that makes
sense for Emacs), let Gnulib arrange for the traditional behavior.
* admin/merge-gnulib (GNULIB_MODULES): Add malloc-gnu (which we
were already depending on indirectly) and realloc-posix.
* lib/gnulib.mk.in, m4/gnulib-comp.m4:
Regenerate by running admin/merge-gnulib.

1 files changed, 2 insertions, 2 deletions

diff --git a/admin/merge-gnulib b/admin/merge-gnulib
index 2eab5ab8b9c..ae433961df3 100755
--- a/admin/merge-gnulib
+++ b/admin/merge-gnulib
@@ -41,11 +41,11 @@ GNULIB_MODULES='
   free-posix fstatat fsusage fsync futimens
   getline getloadavg getopt-gnu getrandom gettime gettimeofday gitlog-to-changelog
   ieee754-h ignore-value intprops largefile libgmp lstat
-  manywarnings memmem-simple mempcpy memrchr memset_explicit
+  malloc-gnu manywarnings memmem-simple mempcpy memrchr memset_explicit
   minmax mkostemp mktime
   nanosleep nproc nstrftime
   pathmax pipe2 pselect pthread_sigmask
-  qcopy-acl readlink readlinkat regex
+  qcopy-acl readlink readlinkat realloc-posix regex
   sig2str sigdescr_np socklen stat-time std-gnu11
   stdc_bit_width stdc_count_ones stdc_trailing_zeros
   stdckdint-h stddef-h stdio-h