* config.h (MPROTECT_VDB): Don't define on Linux.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@28179 138bc75d-0d04-0410-961f-82ee72b054a4

boehm-gc/ChangeLog

+1999-07-19  Tom Tromey  <tromey@cygnus.com>
+
+	* config.h (MPROTECT_VDB): Don't define on Linux.
+
 1999-07-19  Alexandre Oliva  <oliva@dcc.unicamp.br>
 
 	* Makefile.am (.s.lo): Avoid `#line' directives.

boehm-gc/config.h

@@ -590,7 +590,10 @@
 	/* Appears to be 0xe0000000 for at least one 2.1.91 kernel.	*/
 	/* Probably needs to be more flexible, but I don't yet 		*/
 	/* fully understand how flexible.				*/
-#	define MPROTECT_VDB
+
+	/* Linux threads don't interact well with the read() wrapper.
+	   Not defining MPROTECT_VDB fixes this.  */
+	/* #	define MPROTECT_VDB*/
 #       ifdef __ELF__
 #            define DYNAMIC_LOADING
 #	     ifdef UNDEFINED	/* includes ro data */