From d223e1ea9ae864c0e563187f1e76240ef1acad87 Mon Sep 17 00:00:00 2001
From: Karl Williamson <khw@cpan.org>
Date: Fri, 29 May 2020 14:25:19 -0600
Subject: handy.h: Create nBIT_MASK(n) macro

This encapsulates a common paradigm, making sure that it is done
correctly for the platform's size.
---
 doop.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'doop.c')

diff --git a/doop.c b/doop.c
index 267b640f4d..a06992f906 100644
--- a/doop.c
+++ b/doop.c
@@ -857,7 +857,7 @@ Perl_do_vecget(pTHX_ SV *sv, STRLEN offset, int size)
 	}
     }
     else if (size < 8)
-	retnum = (s[uoffset] >> bitoffs) & ((1 << size) - 1);
+	retnum = (s[uoffset] >> bitoffs) & nBIT_MASK(size);
     else {
 	if (size == 8)
 	    retnum = s[uoffset];
@@ -960,7 +960,7 @@ Perl_do_vecset(pTHX_ SV *sv)
     }
 
     if (size < 8) {
-	mask = (1 << size) - 1;
+	mask = nBIT_MASK(size);
 	lval &= mask;
 	s[offset] &= ~(mask << bitoffs);
 	s[offset] |= lval << bitoffs;
-- 
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