signatures: make param and optional param count IV

During the course of parsing end exection, these values get stored
as ints and UVs, then used as SSize_t.

Standardise on IVs instead. Technically they can never be negative, but
their final use is as indices into AVs, which is SSize_t, so it's
easier to standardise on a signed value throughout.

1 files changed, 2 insertions, 2 deletions

diff --git a/parser.h b/parser.h
index d4b1ec8905..d5f1b88d88 100644
--- a/parser.h
+++ b/parser.h
@@ -118,8 +118,8 @@ typedef struct yy_parser {
     line_t	preambling;	/* line # when processing $ENV{PERL5DB} */
 
     /* these are valid whiling parsing a subroutine signature */
-    int         sig_elems;      /* number of signature elements seen so far */
-    int         sig_optelems;   /* number of optional signature elems seen */
+    IV          sig_elems;      /* number of signature elements seen so far */
+    IV          sig_optelems;   /* number of optional signature elems seen */
     char        sig_slurpy;     /* the sigil of the slurpy var (or null) */
 } yy_parser;