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merges r28457 from trunk into ruby_1_9_2.

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* thread.c (rb_fd_resize, rb_fd_copy): avoid NULL dereference upon
  failed realloc by using xrealloc instead of not realloc.  a patch
  from Jim Meyering <meyering at redhat.com> in [ruby-core:30920]
  [Bug #3489]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@28509 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
yugui 2010-07-01 07:41:55 +00:00
parent 195d3bcc86
commit 83f1241ad5
2 changed files with 9 additions and 2 deletions
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4
thread.c
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@ -2285,7 +2285,7 @@ rb_fd_resize(int n, rb_fdset_t *fds)
if (o < sizeof(fd_set)) o = sizeof(fd_set);
if (m > o) {
fds->fdset = realloc(fds->fdset, m);
fds->fdset = xrealloc(fds->fdset, m);
memset((char *)fds->fdset + o, 0, m - o);
}
if (n >= fds->maxfd) fds->maxfd = n + 1;
@ -2319,7 +2319,7 @@ rb_fd_copy(rb_fdset_t *dst, const fd_set *src, int max)
if (size < sizeof(fd_set)) size = sizeof(fd_set);
dst->maxfd = max;
dst->fdset = realloc(dst->fdset, size);
dst->fdset = xrealloc(dst->fdset, size);
memcpy(dst->fdset, src, size);
}