[PATCH 3/5] identify the weak function symbols that provide a real default action

[Jens Gustedt <Jens.Gustedt@inria.fr>]

2	0	src/internal/libc.h
2	2	src/signal/sigaction.c
2	3	src/thread/cancel_dummy.c
2	2	src/time/timer_create.c

diff --git a/src/internal/libc.h b/src/internal/libc.h
index a2f36fb..a097a66 100644
--- a/src/internal/libc.h
+++ b/src/internal/libc.h
@@ -67,6 +67,8 @@ extern char **__environ;
 
 #define _Readonly_alias extern __attribute__((__weak__,__alias__("__readonly_dummy")))
 
+#define _Weak extern __attribute__((__weak__))
+
 #undef weak_alias
 #define weak_alias(old, new) \
 	extern __typeof(old) new __attribute__((weak, alias(#old)))
diff --git a/src/signal/sigaction.c b/src/signal/sigaction.c
index 7a72a44..ff7ac81 100644
--- a/src/signal/sigaction.c
+++ b/src/signal/sigaction.c
@@ -9,8 +9,8 @@
 
 void __restore(), __restore_rt();
 
-static pthread_t dummy(void) { return 0; }
-weak_alias(dummy, __pthread_self_def);
+_Weak
+pthread_t __pthread_self_def(void) { return 0; }
 
 int __libc_sigaction(int sig, const struct sigaction *restrict sa, struct sigaction *restrict old)
 {
diff --git a/src/thread/cancel_dummy.c b/src/thread/cancel_dummy.c
index 047692c..7246970 100644
--- a/src/thread/cancel_dummy.c
+++ b/src/thread/cancel_dummy.c
@@ -1,12 +1,11 @@
 #include "pthread_impl.h"
 
-static long sccp(long nr, long u, long v, long w, long x, long y, long z)
+_Weak
+long (__syscall_cp)(long nr, long u, long v, long w, long x, long y, long z)
 {
 	return (__syscall)(nr, u, v, w, x, y, z);
 }
 
-weak_alias(sccp, __syscall_cp);
-
 static void dummy()
 {
 }
diff --git a/src/time/timer_create.c b/src/time/timer_create.c
index 60a18c7..0e00baf 100644
--- a/src/time/timer_create.c
+++ b/src/time/timer_create.c
@@ -14,10 +14,10 @@ struct start_args {
 	struct sigevent *sev;
 };
 
-static void dummy_1(pthread_t self)
+_Weak
+void __pthread_tsd_run_dtors(pthread_t self)
 {
 }
-weak_alias(dummy_1, __pthread_tsd_run_dtors);
 
 static void cleanup_fromsig(void *p)
 {
-- 
1.7.9.5