1 files changed, 51 insertions, 0 deletions
diff --git a/main/musl/0001-track-pthread-stack-guard-sizes.patch b/main/musl/0001-track-pthread-stack-guard-sizes.patch
new file mode 100644
index 0000000000..f132eacead
--- /dev/null
+++ b/main/musl/0001-track-pthread-stack-guard-sizes.patch
@@ -0,0 +1,51 @@
+From 21845fbedb172de1e14946fcf4c517ebc4d12fc1 Mon Sep 17 00:00:00 2001
+From: William Pitcock <nenolod@dereferenced.org>
+Date: Sat, 6 Jan 2018 04:42:44 +0000
+Subject: [PATCH] track pthread stack guard sizes
+
+some applications (rustc) are dependent on pthread_getattr_np() providing the guard size.
+---
+ src/internal/pthread_impl.h     | 1 +
+ src/thread/pthread_create.c     | 1 +
+ src/thread/pthread_getattr_np.c | 1 +
+ 3 files changed, 3 insertions(+)
+
+diff --git a/src/internal/pthread_impl.h b/src/internal/pthread_impl.h
+index 56e19348..c2cafeaa 100644
+--- a/src/internal/pthread_impl.h
++++ b/src/internal/pthread_impl.h
+@@ -48,6 +48,7 @@ struct pthread {
+ 	void *stdio_locks;
+ 	uintptr_t canary_at_end;
+ 	void **dtv_copy;
++	size_t guard_size;
+ };
+ 
+ struct __timer {
+diff --git a/src/thread/pthread_create.c b/src/thread/pthread_create.c
+index 6cbf85b3..0faad765 100644
+--- a/src/thread/pthread_create.c
++++ b/src/thread/pthread_create.c
+@@ -265,6 +265,7 @@ int __pthread_create(pthread_t *restrict res, const pthread_attr_t *restrict att
+ 	new->map_size = size;
+ 	new->stack = stack;
+ 	new->stack_size = stack - stack_limit;
++	new->guard_size = guard;
+ 	new->start = entry;
+ 	new->start_arg = arg;
+ 	new->self = new;
+diff --git a/src/thread/pthread_getattr_np.c b/src/thread/pthread_getattr_np.c
+index ae26a5ab..29a209bd 100644
+--- a/src/thread/pthread_getattr_np.c
++++ b/src/thread/pthread_getattr_np.c
+@@ -7,6 +7,7 @@ int pthread_getattr_np(pthread_t t, pthread_attr_t *a)
+ {
+ 	*a = (pthread_attr_t){0};
+ 	a->_a_detach = !!t->detached;
++	a->_a_guardsize = t->guard_size;
+ 	if (t->stack) {
+ 		a->_a_stackaddr = (uintptr_t)t->stack;
+ 		a->_a_stacksize = t->stack_size;
+-- 
+2.15.0
+