path: root/src/internal/libc.h
diff options
authorRich Felker <>2011-04-20 21:41:45 -0400
committerRich Felker <>2011-04-20 21:41:45 -0400
commit870cc679771f776333953b2a990a107393d9d0fd (patch)
tree45b6de4ba1170de4654b23d62bd1c6a38220e112 /src/internal/libc.h
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/internal/libc.h')
1 files changed, 1 insertions, 0 deletions
diff --git a/src/internal/libc.h b/src/internal/libc.h
index 06ba73e7..638ea527 100644
--- a/src/internal/libc.h
+++ b/src/internal/libc.h
@@ -16,6 +16,7 @@ struct __libc {
volatile int threads_minus_1;
int ofl_lock;
FILE *ofl_head;
+ void *main_thread;