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Backported upstream patch to fix SIGSEGV with gcc-4.6
http://git.savannah.gnu.org/cgit/guile.git/commit/?h=branch_release-1-8&id=62bc1072c19e81bb0f9e42a5034e7ab8c27d3b94
https://bugs.gentoo.org/show_bug.cgi?id=424475
--- a/configure.in
+++ b/configure.in
@@ -1199,23 +1199,20 @@
AC_RUN_IFELSE([AC_LANG_SOURCE(
[AC_INCLUDES_DEFAULT
int
-find_stack_direction ()
+find_stack_direction (int *addr, int depth)
{
- static char *addr = 0;
- auto char dummy;
- if (addr == 0)
- {
- addr = &dummy;
- return find_stack_direction ();
- }
- else
- return (&dummy > addr) ? 1 : -1;
+ int dir, dummy = 0;
+ if (! addr)
+ addr = &dummy;
+ *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
+ dir = depth ? find_stack_direction (addr, depth - 1) : 0;
+ return dir + dummy;
}
int
-main ()
+main (int argc, char **argv)
{
- return find_stack_direction () < 0;
+ return find_stack_direction (0, argc + !argv + 20) < 0;
}])],
[SCM_I_GSC_STACK_GROWS_UP=1],
[],
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