Add prototypes for __FILE__ &c.

Before this commit, prototype("CORE::__FILE__") would die with ‘Can’t
find an op number...’.

That __FILE__ does not have an op number whereas time() does is an
implementation detail that should not be exposed to the user.

So this commit adds prototypes for __FILE__, __LINE__ and __PACKAGE__.

1 files changed, 5 insertions, 0 deletions

diff --git a/pp.c b/pp.c
index 98d64827e0..3c46fc3f31 100644
--- a/pp.c
+++ b/pp.c
@@ -466,6 +466,11 @@ PP(pp_prototype)
 		    ret = newSVpvs_flags("\\[$@%*]$@", SVs_TEMP);
 		    goto set;
 		}
+		if (code == -KEY___FILE__ || code == -KEY___LINE__
+		 || code == -KEY___PACKAGE__) {
+		    ret = newSVpvs_flags("", SVs_TEMP);
+		    goto set;
+		}
 		if (code == -KEY_readpipe) {
 		    s = "CORE::backtick";
 		}