jmp-unwind.c: add hidden _longjmp_unwind

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

include/setjmp.h

@@ -119,6 +119,7 @@ libc_hidden_proto(__longjmp)
 extern __typeof(longjmp) __libc_longjmp attribute_noreturn;
 extern __typeof(siglongjmp) __libc_siglongjmp attribute_noreturn;
 extern void _longjmp_unwind(jmp_buf __env, int __val);
+libc_hidden_proto(_longjmp_unwind)
 extern int __sigjmp_save(sigjmp_buf __env, int __savemask) attribute_hidden;
 /* We use the normal longjmp for unwinding */
 # define __libc_unwind_longjmp(buf, val) __libc_longjmp(buf, val)

libpthread/linuxthreads/sysdeps/unix/sysv/linux/jmp-unwind.c

@@ -32,3 +32,4 @@ _longjmp_unwind (jmp_buf env, int val)
 		      (env->__jmpbuf, __builtin_frame_address (0)),
 		      (void) 0);
 }
+libc_hidden_def(_longjmp_unwind)

libpthread/nptl/sysdeps/unix/sysv/linux/jmp-unwind.c

@@ -37,3 +37,4 @@ _longjmp_unwind (jmp_buf env, int val)
     __pthread_cleanup_upto (env->__jmpbuf, CURRENT_STACK_FRAME);
 #endif
 }
+libc_hidden_def(_longjmp_unwind)