https://github.com/NixOS/nixpkgs/commit/92d99c521b2c02fa645b3b993ac4bbaf49e43ddd diff -ur a/pic2plot/gram.cc b/pic2plot/gram.cc --- a/pic2plot/gram.cc 2000-06-28 00:23:21.000000000 -0400 +++ b/pic2plot/gram.cc 2023-09-07 22:59:47.004460065 -0400 @@ -1229,9 +1229,9 @@ char *from; unsigned int count; { - register char *f = from; - register char *t = to; - register int i = count; + char *f = from; + char *t = to; + int i = count; while (i-- > 0) *t++ = *f++; @@ -1244,9 +1244,9 @@ static void __yy_memcpy (char *to, char *from, unsigned int count) { - register char *t = to; - register char *f = from; - register int i = count; + char *t = to; + char *f = from; + int i = count; while (i-- > 0) *t++ = *f++; @@ -1289,10 +1289,10 @@ yyparse(YYPARSE_PARAM_ARG) YYPARSE_PARAM_DECL { - register int yystate; - register int yyn; - register short *yyssp; - register YYSTYPE *yyvsp; + int yystate; + int yyn; + short *yyssp; + YYSTYPE *yyvsp; int yyerrstatus; /* number of tokens to shift before error messages enabled */ int yychar1 = 0; /* lookahead token as an internal (translated) token number */