path: root/src/thread/pthread_setcancelstate.c
diff options
authorRich Felker <>2011-04-20 21:41:45 -0400
committerRich Felker <>2011-04-20 21:41:45 -0400
commit870cc679771f776333953b2a990a107393d9d0fd (patch)
tree45b6de4ba1170de4654b23d62bd1c6a38220e112 /src/thread/pthread_setcancelstate.c
parentf9a6372a98cc4d1b70400b2e7238e1f9eae50558 (diff)
fix minor bugs due to incorrect threaded-predicate semantics
some functions that should have been testing whether pthread_self() had been called and initialized the thread pointer were instead testing whether pthread_create() had been called and actually made the program "threaded". while it's unlikely any mismatch would occur in real-world problems, this could have introduced subtle bugs. now, we store the address of the main thread's thread descriptor in the libc structure and use its presence as a flag that the thread register is initialized. note that after fork, the calling thread (not necessarily the original main thread) is the new main thread.
Diffstat (limited to 'src/thread/pthread_setcancelstate.c')
1 files changed, 1 insertions, 1 deletions
diff --git a/src/thread/pthread_setcancelstate.c b/src/thread/pthread_setcancelstate.c
index ebb6eba4..ba2b2311 100644
--- a/src/thread/pthread_setcancelstate.c
+++ b/src/thread/pthread_setcancelstate.c
@@ -3,7 +3,7 @@
int pthread_setcancelstate(int new, int *old)
if (new > 1U) return EINVAL;
- if (libc.threaded) {
+ if (libc.main_thread) {
struct pthread *self = __pthread_self();
if (old) *old = self->canceldisable;
self->canceldisable = new;