From: Rich Felker <dalias@aerifal.cx>
Date: Sat, 2 Feb 2013 03:23:24 +0000 (-0500)
Subject: if pthread_create fails, it must not attempt mmap if there is no mapping
X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=commitdiff_plain;h=077549e0d468ff47fdf3e00bb3cfdb929ac8324f

if pthread_create fails, it must not attempt mmap if there is no mapping

this bug was introduced when support for application-provided stacks
was originally added.
---

diff --git a/src/thread/pthread_create.c b/src/thread/pthread_create.c
index 4c1decaa..1e55a6f9 100644
--- a/src/thread/pthread_create.c
+++ b/src/thread/pthread_create.c
@@ -188,7 +188,7 @@ int pthread_create(pthread_t *restrict res, const pthread_attr_t *restrict attrp
 
 	if (ret < 0) {
 		a_dec(&libc.threads_minus_1);
-		munmap(map, size);
+		if (map) munmap(map, size);
 		return EAGAIN;
 	}