* tests/unixFCmd.test:

	* unix/tclUnixFCmd.c: added support for symbolic permissions
	setting in SetPermissionsAttribute (file attr $file -perm ...)
	[Bug: 3970]

	* tests/expr.test:
	* unix/Makefile.in:
	* unix/configure.in:
	* unix/tcl.m4: strtod bug on Tru64 [Bug: 3378]
	and added tests to prevent unnecessary chmod +x in sources while
	installing, as well as more intelligent setsockopt/gethostbyname
	checks [Bug: 3366, 3389]

	* unix/tclUnixThrd.c: added compile time support (through use of
	the TCL_THREAD_STACK_MIN define) for increasing the default stack
	size for a thread. [Bug: 3797, 1966]

1 files changed, 22 insertions, 0 deletions

diff --git a/unix/tclUnixThrd.c b/unix/tclUnixThrd.c
index 47e56d7..53489bc 100644
--- a/unix/tclUnixThrd.c
+++ b/unix/tclUnixThrd.c
@@ -81,9 +81,31 @@ TclpThreadCreate(idPtr, proc, clientData)
 {
     pthread_attr_t attr;
     int result;
+#ifdef TCL_THREAD_STACK_MIN
+    size_t size;
+#endif
 
     pthread_attr_init(&attr);
     pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
+
+#ifdef TCL_THREAD_STACK_MIN
+    /*
+     * Certain systems define a thread stack size that by default is
+     * too small for many operations.  The user has the option of
+     * defining TCL_THREAD_STACK_MIN to a value large enough to work
+     * for their needs.  This would look like (for 128K min stack):
+     *    make MEM_DEBUG_FLAGS=-DTCL_THREAD_STACK_MIN=131072L
+     *
+     * This solution is not optimal, as we should allow the user to
+     * specify a size at runtime, but we don't want to slow this function
+     * down, and that would still leave the main thread at the default.
+     */
+    result = pthread_attr_getstacksize(&attr, &size);
+    if (!result && (size < TCL_THREAD_STACK_MIN)) {
+	pthread_attr_setstacksize(&attr, (size_t) TCL_THREAD_STACK_MIN);
+    }
+#endif
+
     if (pthread_create((pthread_t *)idPtr, &attr,
 	    (void * (*)())proc, (void *)clientData) &&
 	    pthread_create((pthread_t *)idPtr, NULL,