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Re: Building guile 1.8.6 on Tru64 5.1b

From: Ludovic Courtès
Subject: Re: Building guile 1.8.6 on Tru64 5.1b
Date: Sun, 19 Apr 2009 00:43:29 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.90 (gnu/linux)


Didier Godefroy <address@hidden> writes:

> gc_os_dep.c:1130: warning: type defaults to 'int' in declaration of '_end'
> gc_os_dep.c: In function 'scm_get_stack_base':
> gc_os_dep.c:1916: warning: comparison of distinct pointer types lacks a cast

The attached patch should fix it.  Can you try it and report back?
(Apply it with "patch -p1 < /the/patch.diff" from the top-level source

> In the previous 1.8.5 version which I could never build successfully, I was
> using a cflag -DSCM_DEBUG_TYPING_STRICTNESS=0 although I forgot how I was
> brought to use it, it's been a while since I tried building 1.8.5

This is no longer needed (see

Hope this helps,

diff --git a/libguile/gc_os_dep.c b/libguile/gc_os_dep.c
index d89f1cf..7bc9644 100644
--- a/libguile/gc_os_dep.c
+++ b/libguile/gc_os_dep.c
@@ -1127,7 +1127,7 @@ scm_get_stack_base ()
 #   ifdef OSF1
 #      define OS_TYPE "OSF1"
 #      define DATASTART ((ptr_t) 0x140000000)
-       extern _end;
+       extern int _end;
 #      define DATAEND ((ptr_t) &_end)
 #      define HEURISTIC2
        /* Normally HEURISTIC2 is too conervative, since                */
@@ -1912,7 +1912,7 @@ void *scm_get_stack_base()
 #          if STACK_GROWS_DOWN
                result = GC_find_limit((ptr_t)(&dummy), TRUE);
 #              ifdef HEURISTIC2_LIMIT
-                   if (result > HEURISTIC2_LIMIT
+                   if ((ptr_t)result > HEURISTIC2_LIMIT
                        && (ptr_t)(&dummy) < HEURISTIC2_LIMIT) {
                            result = HEURISTIC2_LIMIT;

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