From d3229873aea34e4768d45cfa6a5ef50323fdf3fe Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <ian@gcc.gnu.org>
Date: Fri, 10 Feb 2012 15:55:37 +0000
Subject: [PATCH] runtime: For g0 set stack_size to 0 when not -fsplit-stack.
From-SVN: r184099
---
libgo/runtime/proc.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/libgo/runtime/proc.c b/libgo/runtime/proc.c
index 42a5779bc992..94c2a51730e9 100644
--- a/libgo/runtime/proc.c
+++ b/libgo/runtime/proc.c
@@ -909,7 +909,9 @@ runtime_mstart(void* mp)
__splitstack_getcontext(&g->stack_context[0]);
#else
g->gcinitial_sp = ∓
- g->gcstack_size = StackMin;
+ // Setting gcstack_size to 0 is a marker meaning that gcinitial_sp
+ // is the top of the stack, not the bottom.
+ g->gcstack_size = 0;
g->gcnext_sp = ∓
#endif
getcontext(&g->context);
@@ -1267,6 +1269,8 @@ __go_go(void (*fn)(void*), void* arg)
#else
sp = newg->gcinitial_sp;
spsize = newg->gcstack_size;
+ if(spsize == 0)
+ runtime_throw("bad spsize in __go_go");
newg->gcnext_sp = sp;
#endif
} else {
--
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