* signal.c (rb_sigaltstack_size): new. calculate stack size for

  sigsegv handler. enlarge value when x86 or x86_64 on Linux.
  Linux has very small MINSIGSTKSZ size (2048 bytes) and
  our sigsegv routine need 5KiB at least. [Bug #7141]
* internal.h: add declaration of rb_sigaltstack_size().
* vm_core.h: remove ALT_STACK_SIZE definition.

* signal.c (rb_register_sigaltstack): replace ALT_STACK_SIZE with
  rb_sigaltstack_size();
* gc.c (Init_heap): ditto.
* vm.c (th_init): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38409 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 0 insertions, 6 deletions

diff --git a/vm_core.h b/vm_core.h
index 73b24a1e0e..8cc48bc00d 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -456,12 +456,6 @@ struct rb_unblock_callback {
 
 struct rb_mutex_struct;
 
-#ifdef MINSIGSTKSZ
-#define ALT_STACK_SIZE (MINSIGSTKSZ*2)
-#else
-#define ALT_STACK_SIZE (4*1024)
-#endif
-
 struct rb_thread_struct;
 typedef struct rb_thread_list_struct{
     struct rb_thread_list_struct *next;