Fix known issues which blow up the process after dlopen("libthr.so")

(or loading a dso linked to libthr.so into process which was not
linked against threading library).

MFC r276630:
Remove interposing, fix malloc, reinstall signal handlers wrappers on
libthr load.

MFC r276681:
Avoid calling internal libc function through PLT or accessing data
though GOT.

MFC r277032:
Reduce the size of the interposing table and amount of
cancellation-handling code in the libthr.

MFC note:
r276646 ("do not erronously export 'openat' symbol from rtld") is not
applicable to stable/10 yet, since PATHFDS support was not merged.

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/libthr/thread/thr_printf.c b/lib/libthr/thread/thr_printf.c
index 7d32ae7..a64b446 100644
--- a/lib/libthr/thread/thr_printf.c
+++ b/lib/libthr/thread/thr_printf.c
@@ -31,6 +31,7 @@
 #include <unistd.h>
 #include <pthread.h>
 
+#include "libc_private.h"
 #include "thr_private.h"
 
 static void	pchar(int fd, char c);