From fc3e4a5ebb39d786bffa98907af1a996db50d1e9 Mon Sep 17 00:00:00 2001
From: Reimer Behrends <behrends@gmail.com>
Date: Mon, 8 Oct 2018 12:17:52 +0200
Subject: [PATCH] Fix task scanner to use new Julia API call

---
 src/julia_gc.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/julia_gc.c b/src/julia_gc.c
index 8426e7ef9f..7f7f3fac9f 100644
--- a/src/julia_gc.c
+++ b/src/julia_gc.c
@@ -529,8 +529,11 @@ void GapRootScanner(int full)
 
 void GapTaskScanner(jl_task_t * task, int root_task)
 {
-    if (task->stkbuf) {
-        TryMarkRange(task->stkbuf, (char *)task->stkbuf + task->bufsz);
+    size_t size;
+    int    tid;
+    void * stack = jl_task_stack_buffer(task, &size, &tid);
+    if (stack && tid < 0) {
+        TryMarkRange(stack, (char *)stack + size);
     }
 }