support _BSD_SOURCE feature test macro

[musl] / src / thread / pthread_create.c

diff --git a/src/thread/pthread_create.c b/src/thread/pthread_create.c
index 0e1dbb2..917be54 100644 (file)
--- a/src/thread/pthread_create.c
+++ b/src/thread/pthread_create.c
@@ -104,7 +104,7 @@ int pthread_create(pthread_t *res, const pthread_attr_t *attr, void *(*entry)(vo
                size = guard + ROUND(attr->_a_stacksize + DEFAULT_STACK_SIZE);
        }
        size += __pthread_tsd_size;
-       map = mmap(0, size, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANON, -1, 0);
+       map = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
        if (map == MAP_FAILED) return EAGAIN;
        if (guard) mprotect(map, guard, PROT_NONE);
 
@@ -120,6 +120,7 @@ int pthread_create(pthread_t *res, const pthread_attr_t *attr, void *(*entry)(vo
        new->tsd = (void *)tsd;
        if (attr) new->detached = attr->_a_detach;
        new->unblock_cancel = self->cancel;
+       new->canary = self->canary ^ (uintptr_t)&new;
        stack = (void *)new;
 
        __synccall_lock();