Index: Python/thread_pthread.h
===================================================================
--- Python/thread_pthread.h	(revision 60447)
+++ Python/thread_pthread.h	(working copy)
@@ -149,6 +149,7 @@
 {
 	pthread_t th;
 	int status;
+	sigset_t set, oset;
 #if defined(THREAD_STACK_SIZE) || defined(PTHREAD_SYSTEM_SCHED_SUPPORTED)
 	pthread_attr_t attrs;
 #endif
@@ -178,6 +179,8 @@
 pthread_attr_setscope(&attrs, PTHREAD_SCOPE_SYSTEM);
 #endif
 
+	sigfillset(&set);
+	SET_THREAD_SIGMASK(SIG_BLOCK, &set, &oset);
 	status = pthread_create(&th, 
 #if defined(THREAD_STACK_SIZE) || defined(PTHREAD_SYSTEM_SCHED_SUPPORTED)
 				 &attrs,
@@ -187,6 +190,7 @@
 				 (void* (*)(void *))func,
 				 (void *)arg
 				 );
+	SET_THREAD_SIGMASK(SIG_SETMASK, &oset, NULL);
 
 #if defined(THREAD_STACK_SIZE) || defined(PTHREAD_SYSTEM_SCHED_SUPPORTED)
 	pthread_attr_destroy(&attrs);
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://bugs.python.org/file9333/pthread_sig.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://bugs.python.org/file9333/pthread_sig.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>