re PR target/18997 (Segmentation Violation in pthread_getspecific)

gcc
	PR target/18997
	* config/i386/cygwin.h (GTHREAD_USE_WEAK): Define to 0.

libstdc++-v3
	PR target/18997
	* config/os/newlib/os_defines.h (_GLIBCXX_GTHREAD_USE_WEAK):
	Define to 0 for __CYGWIN__.

From-SVN: r92281

gcc/ChangeLog

+2004-12-16  Danny Smith  <dannysmith@users.sourceforge.net>
+
+	PR target/18997
+	* config/i386/cygwin.h (GTHREAD_USE_WEAK): Define to 0.
+
 2004-12-16  Richard Henderson  <rth@redhat.com>
 	    Aldy Hernandez  <aldyh@redhat.com>
 

gcc/config/i386/cygwin.h

@@ -228,3 +228,7 @@ do \
   } \
 while (0)
 #endif
+
+/* Binutils does not handle weak symbols from dlls correctly.  For now,
+   do not use them unnecessarily in gthr-posix.h.  */
+#define GTHREAD_USE_WEAK 0

libstdc++-v3/ChangeLog

+2004-12-16  Danny Smith  <dannysmith@users.sourceforge.net>
+
+	PR target/18997
+	* config/os/newlib/os_defines.h (_GLIBCXX_GTHREAD_USE_WEAK):
+	Define to 0 for __CYGWIN__.
+
 2004-12-16  Paolo Carlini  <pcarlini@suse.de>
 
 	* include/tr1/type_traits: Implement add_const, add_volatile,

libstdc++-v3/config/os/newlib/os_defines.h

@@ -33,4 +33,8 @@
 // System-specific #define, typedefs, corrections, etc, go here.  This
 // file will come before all others.
 
+#ifdef __CYGWIN__
+#define _GLIBCXX_GTHREAD_USE_WEAK 0
+#endif
+
 #endif