Merge some parser fields

By combining two booleans with the flags field, we save some space.
By making it a 16-bit instead of 32-bit field (only two flag bits
are currently used), we also avoid alignment holes (I hope; I’m
not very good at this).

1 files changed, 3 insertions, 3 deletions

diff --git a/parser.h b/parser.h
index 36b1a43f54..9167e6c07f 100644
--- a/parser.h
+++ b/parser.h
@@ -105,10 +105,10 @@ typedef struct yy_parser {
     COP		*saved_curcop;	/* the previous PL_curcop */
     char	tokenbuf[256];
 
-    bool	in_pod;		/* lexer is within a =pod section */
     U8		lex_fakeeof;	/* precedence at which to fake EOF */
-    bool	filtered;	/* source filters in evalbytes */
-    U32		lex_flags;
+    PERL_BITFIELD16	lex_flags:14;
+    PERL_BITFIELD16	in_pod:1;      /* lexer is within a =pod section */
+    PERL_BITFIELD16	filtered:1;    /* source filters in evalbytes */
 } yy_parser;
 
 /* flags for lexer API */