sh: Forward-declare struct alias instead of giving up type safety via void *

2 files changed, 5 insertions, 4 deletions

diff --git a/bin/sh/input.c b/bin/sh/input.c
index 12f285f..b1f0475 100644
--- a/bin/sh/input.c
+++ b/bin/sh/input.c
@@ -350,7 +350,7 @@ pungetc(void)
  * We handle aliases this way.
  */
 void
-pushstring(char *s, int len, void *ap)
+pushstring(char *s, int len, struct alias *ap)
 {
 	struct strpush *sp;
 
@@ -365,9 +365,9 @@ pushstring(char *s, int len, void *ap)
 	sp->prevstring = parsenextc;
 	sp->prevnleft = parsenleft;
 	sp->prevlleft = parselleft;
-	sp->ap = (struct alias *)ap;
+	sp->ap = ap;
 	if (ap)
-		((struct alias *)ap)->flag |= ALIASINUSE;
+		ap->flag |= ALIASINUSE;
 	parsenextc = s;
 	parsenleft = len;
 	INTON;
diff --git a/bin/sh/input.h b/bin/sh/input.h
index 92aba45..38be609 100644
--- a/bin/sh/input.h
+++ b/bin/sh/input.h
@@ -45,6 +45,7 @@ extern int parsenleft;		/* number of characters left in input buffer */
 extern char *parsenextc;	/* next character in input buffer */
 extern int init_editline;	/* 0 == not setup, 1 == OK, -1 == failed */
 
+struct alias;
 struct parsefile;
 
 char *pfgets(char *, int);
@@ -52,7 +53,7 @@ int pgetc(void);
 int preadbuffer(void);
 int preadateof(void);
 void pungetc(void);
-void pushstring(char *, int, void *);
+void pushstring(char *, int, struct alias *);
 void setinputfile(const char *, int);
 void setinputfd(int, int);
 void setinputstring(char *, int);