2 files changed, 3 insertions, 1 deletions
diff --git a/opcode.pl b/opcode.pl
index 2c2bc50a50..50cf214821 100755
--- a/opcode.pl
+++ b/opcode.pl
@@ -477,7 +477,8 @@ recv		recv			ck_fun		imst	F R S S
 eof		eof			ck_eof		is	F?
 tell		tell			ck_fun		st	F?
 seek		seek			ck_fun		s	F S S
-truncate	truncate		ck_trunc	is	F S
+# truncate really behaves as if it had both "S S" and "F S"
+truncate	truncate		ck_trunc	is	S S
 
 fcntl		fcntl			ck_fun		st	F S S
 ioctl		ioctl			ck_fun		st	F S S
diff --git a/toke.c b/toke.c
index ccd4aed92f..6c4b7cdd69 100644
--- a/toke.c
+++ b/toke.c
@@ -2516,6 +2516,7 @@ yylex()
 		if (hints & HINT_STRICT_SUBS &&
 		    lastchar != '-' &&
 		    strnNE(s,"->",2) &&
+		    last_lop_op != OP_TRUNCATE &&  /* S/F prototype in opcode.pl */
 		    last_lop_op != OP_ACCEPT &&
 		    last_lop_op != OP_PIPE_OP &&
 		    last_lop_op != OP_SOCKPAIR)