diff --git a/src/cmd/ksh93/bltins/enum.c b/src/cmd/ksh93/bltins/enum.c
index 7193bae01..9d1d6eb41 100644
--- a/src/cmd/ksh93/bltins/enum.c
+++ b/src/cmd/ksh93/bltins/enum.c
@@ -131,7 +131,7 @@ static int enuminfo(Opt_t* op, Sfio_t *out, const char *str, Optdisc_t *fp)
 		return(0);
 	if(strcmp(str,"default")==0)
 		sfprintf(out,"\b%s\b",ep->values[0]);
-	else if(memcmp(str,"last",4)==0)
+	else if(strncmp(str,"last",4)==0)
 	{
 		while(ep->values[++n])
 			;
diff --git a/src/cmd/ksh93/bltins/mkservice.c b/src/cmd/ksh93/bltins/mkservice.c
index 39f2c1c6c..944b6a5b7 100644
--- a/src/cmd/ksh93/bltins/mkservice.c
+++ b/src/cmd/ksh93/bltins/mkservice.c
@@ -355,7 +355,7 @@ static char* setdisc(Namval_t* np, const char* event, Namval_t* action, Namfun_t
 
 	for (i = 0; cp = disctab[i]; i++)
 	{
-		if (memcmp(event, cp, n))
+		if (strncmp(event, cp, n))
 			continue;
 		if (action == np)
 			action = sp->disc[i];
diff --git a/src/cmd/ksh93/bltins/print.c b/src/cmd/ksh93/bltins/print.c
index 3f8a1e068..46002f1bd 100644
--- a/src/cmd/ksh93/bltins/print.c
+++ b/src/cmd/ksh93/bltins/print.c
@@ -692,7 +692,7 @@ static const char *mapformat(Sffmt_t *fe)
 	const struct printmap *pm = Pmap;
 	while(pm->size>0)
 	{
-		if(pm->size==fe->n_str && memcmp(pm->name,fe->t_str,fe->n_str)==0)
+		if(pm->size==fe->n_str && strncmp(pm->name,fe->t_str,fe->n_str)==0)
 			return(pm->map);
 		pm++;
 	}
diff --git a/src/cmd/ksh93/bltins/test.c b/src/cmd/ksh93/bltins/test.c
index a1f61fdc3..9f4701b41 100644
--- a/src/cmd/ksh93/bltins/test.c
+++ b/src/cmd/ksh93/bltins/test.c
@@ -445,7 +445,7 @@ int test_unop(register int op,register const char *arg)
 		return(statb.st_gid==sh.groupid);
 	    case 'a':
 	    case 'e':
-		if(memcmp(arg,"/dev/",5)==0 && sh_open(arg,O_NONBLOCK))
+		if(strncmp(arg,"/dev/",5)==0 && sh_open(arg,O_NONBLOCK))
 			return(1);
 		return(permission(arg, F_OK));
 	    case 'o':
diff --git a/src/cmd/ksh93/bltins/trap.c b/src/cmd/ksh93/bltins/trap.c
index 1db29f822..138a2a14d 100644
--- a/src/cmd/ksh93/bltins/trap.c
+++ b/src/cmd/ksh93/bltins/trap.c
@@ -370,7 +370,7 @@ static int sig_number(const char *string)
 		}
 		while(c);
 		stakseek(o);
-		if(memcmp(stakptr(o),"SIG",3)==0)
+		if(strncmp(stakptr(o),"SIG",3)==0)
 		{
 			sig = 1;
 			o += 3;
diff --git a/src/cmd/ksh93/bltins/typeset.c b/src/cmd/ksh93/bltins/typeset.c
index 72f099075..860b3350d 100644
--- a/src/cmd/ksh93/bltins/typeset.c
+++ b/src/cmd/ksh93/bltins/typeset.c
@@ -723,7 +723,7 @@ static int     setall(char **argv,register int flag,Dt_t *troot,struct tdata *tp
 							if(!is_afunction(np))
 								np = 0;
 						}
-						else if(memcmp(name,".sh.math.",9)==0 && sh_mathstd(name+9))
+						else if(strncmp(name,".sh.math.",9)==0 && sh_mathstd(name+9))
 							continue;
 					}
 				}
diff --git a/src/cmd/ksh93/edit/edit.c b/src/cmd/ksh93/edit/edit.c
index 0deec4c6a..9cd1b9838 100644
--- a/src/cmd/ksh93/edit/edit.c
+++ b/src/cmd/ksh93/edit/edit.c
@@ -1744,7 +1744,7 @@ int ed_histgen(Edit_t *ep,const char *pattern)
 	if(ep->hlist)
 	{
 		m = strlen(ep->hpat)-4;
-		if(memcmp(pattern,ep->hpat+2,m)==0)
+		if(strncmp(pattern,ep->hpat+2,m)==0)
 		{
 			n = strcmp(cp,ep->hpat)==0;
 			for(argv=av=(char**)ep->hlist,mp=ep->hfirst; mp;mp= mp->next)
diff --git a/src/cmd/ksh93/edit/history.c b/src/cmd/ksh93/edit/history.c
index 94f775dc9..65af72434 100644
--- a/src/cmd/ksh93/edit/history.c
+++ b/src/cmd/ksh93/edit/history.c
@@ -949,7 +949,7 @@ int hist_match(register History_t *hp,off_t offset,char *string,int *coffset)
 	n = (int)strlen(string);
 	while(m > n)
 	{
-		if(*cp==*string && memcmp(cp,string,n)==0)
+		if(strncmp((char*)cp,string,n)==0)
 		{
 			if(coffset)
 				*coffset = (cp-first);
diff --git a/src/cmd/ksh93/edit/vi.c b/src/cmd/ksh93/edit/vi.c
index 7dbc6fbdb..c36c945c7 100644
--- a/src/cmd/ksh93/edit/vi.c
+++ b/src/cmd/ksh93/edit/vi.c
@@ -2323,7 +2323,7 @@ static int curline_search(Vi_t *vp, const char *string)
 #endif /* SHOPT_MULTIBYTE */
 	for(dp=(char*)vp->u_space,dpmax=dp+strlen(dp)-len; dp<=dpmax; dp++)
 	{
-		if(*dp==*cp && memcmp(cp,dp,len)==0)
+		if(strncmp(cp,dp,len)==0)
 			return(dp-(char*)vp->u_space);
 	}
 #if SHOPT_MULTIBYTE
diff --git a/src/cmd/ksh93/include/name.h b/src/cmd/ksh93/include/name.h
index 70b9797b8..05efa74d6 100644
--- a/src/cmd/ksh93/include/name.h
+++ b/src/cmd/ksh93/include/name.h
@@ -31,7 +31,8 @@
 #include	<ast.h>
 #include	<cdt.h>
 
-typedef int (*Nambfp_f)(int, char**, void*);
+typedef struct Shbltin_s Shbltin_t;
+typedef int (*Shbltin_f)(int, char**, Shbltin_t*);
 
 /* Nodes can have all kinds of values */
 union Value
@@ -54,7 +55,7 @@ union Value
 	struct Ufunction 	*rp;	/* shell user defined functions */
 	struct Namfun		*funp;	/* discipline pointer */
 	struct Namref		*nrp;	/* name reference */
-	Nambfp_f		bfp;	/* builtin entry point function pointer */
+	Shbltin_f		bfp;	/* builtin entry point function pointer */
 };
 
 #include	"nval.h"
@@ -149,7 +150,7 @@ struct Ufunction
 #define is_abuiltin(n)	(nv_isattr(n,NV_BLTIN|NV_INTEGER)==NV_BLTIN)
 #define is_afunction(n)	(nv_isattr(n,NV_FUNCTION|NV_REF)==NV_FUNCTION)
 #define	nv_funtree(n)	((n)->nvalue.rp->ptree)
-#define	funptr(n)	((Shbltin_f)(n)->nvalue.bfp)
+#define	funptr(n)	((n)->nvalue.bfp)
 
 /* NAMNOD MACROS */
 /* ... for attributes */
diff --git a/src/cmd/ksh93/sh.1 b/src/cmd/ksh93/sh.1
index 264b34d8f..4fa4cb7bb 100644
--- a/src/cmd/ksh93/sh.1
+++ b/src/cmd/ksh93/sh.1
@@ -9194,11 +9194,6 @@ option of the
 .B alias\^
 command to correct this situation.
 .PP
-Some very old shell scripts contain a
-.B ^
-as a synonym for the pipe character
-.BR | .
-.PP
 Using the
 .B hist\^
 built-in command within a compound command will cause the whole
diff --git a/src/cmd/ksh93/sh/expand.c b/src/cmd/ksh93/sh/expand.c
index 82ef6006b..995476d39 100644
--- a/src/cmd/ksh93/sh/expand.c
+++ b/src/cmd/ksh93/sh/expand.c
@@ -98,7 +98,7 @@ int path_expand(const char *pattern, struct argnod **arghead)
 		gp->gl_suffix = sufstr;
 	gp->gl_intr = &sh.trapnote;
 	suflen = 0;
-	if(memcmp(pattern,"~(N",3)==0)
+	if(strncmp(pattern,"~(N",3)==0)
 		flags &= ~GLOB_NOCHECK;
 	glob(pattern, flags, 0, gp);
 	sh_sigcheck();
diff --git a/src/cmd/ksh93/sh/init.c b/src/cmd/ksh93/sh/init.c
index 07ec670b7..e35922f0d 100644
--- a/src/cmd/ksh93/sh/init.c
+++ b/src/cmd/ksh93/sh/init.c
@@ -1093,7 +1093,7 @@ static char* get_math(register Namval_t* np, Namfun_t *fp)
 	mp = (Namval_t*)dtprev(sh.fun_tree,&fake);
 	while(mp=(Namval_t*)dtnext(sh.fun_tree,mp))
 	{
-		if(memcmp(mp->nvname,".sh.math.",9))
+		if(strncmp(mp->nvname,".sh.math.",9))
 			break;
 		if(first++)
 			sfputc(sh.strbuf,' ');
@@ -1992,7 +1992,7 @@ Dt_t *sh_inittree(const struct shtable2 *name_vals)
 		}
 		np->nvenv = 0;
 		if(name_vals==(const struct shtable2*)shtab_builtins)
-			np->nvalue.bfp = (Nambfp_f)((struct shtable3*)tp)->sh_value;
+			np->nvalue.bfp = ((struct shtable3*)tp)->sh_value;
 		else
 		{
 			if(name_vals == shtab_variables)
diff --git a/src/cmd/ksh93/sh/lex.c b/src/cmd/ksh93/sh/lex.c
index 231cc8a9c..196e6d79b 100644
--- a/src/cmd/ksh93/sh/lex.c
+++ b/src/cmd/ksh93/sh/lex.c
@@ -493,6 +493,7 @@ int sh_lex(Lex_t* lp)
 						{
 							if(lp->lex.intest)
 								return(c);
+							/* '((' arithmetic comamnd */
 							lp->lexd.nest=1;
 							lp->lastline = sh.inlineno;
 							lp->lexd.lex_state = ST_NESTED;
@@ -522,6 +523,7 @@ int sh_lex(Lex_t* lp)
 						n = 0;
 					else if(n==LPAREN)
 					{
+						/* process substitution <(...) or >(...) */
 						c  |= SYMLPAR;
 						lp->lex.reservok = 1;
 						lp->lex.skipword = 0;
@@ -1584,9 +1586,9 @@ static int comsub(register Lex_t *lp, int endtok)
 			}
 			if(sh_lexstates[ST_NAME][c]==S_BREAK)
 			{
-				if(memcmp(word,"case",4)==0)
+				if(strncmp(word,"case",4)==0)
 					lp->lex.incase=1;
-				else if(memcmp(word,"esac",4)==0)
+				else if(strncmp(word,"esac",4)==0)
 					lp->lex.incase=0;
 			}
 		skip:
diff --git a/src/cmd/ksh93/sh/name.c b/src/cmd/ksh93/sh/name.c
index 9053365d0..4841f6555 100644
--- a/src/cmd/ksh93/sh/name.c
+++ b/src/cmd/ksh93/sh/name.c
@@ -1162,7 +1162,7 @@ Namval_t *nv_create(const char *name,  Dt_t *root, int flags, Namfun_t *dp)
 							nofree = 0;
 							np = nq;
 						}
-						else if(memcmp(cp,"[0]",3))
+						else if(strncmp(cp,"[0]",3))
 							return(nq);
 						else
 						{
@@ -1390,7 +1390,7 @@ Namval_t *nv_open(const char *name, Dt_t *root, int flags)
 	{
 		if(xp->root!=root)
 			continue;
-		if(*name==*xp->name && xp->namespace==sh.namespace && (flags&(NV_ARRAY|NV_NOSCOPE))==xp->flags && strncmp(xp->name,name,xp->len)==0 && (name[xp->len]==0 || name[xp->len]=='=' || name[xp->len]=='+'))
+		if(xp->namespace==sh.namespace && (flags&(NV_ARRAY|NV_NOSCOPE))==xp->flags && strncmp(xp->name,name,xp->len)==0 && (name[xp->len]==0 || name[xp->len]=='=' || name[xp->len]=='+'))
 		{
 			sh_stats(STAT_NVHITS);
 			np = xp->np;
@@ -2253,7 +2253,7 @@ static int scanfilter(Namval_t *np, struct scan *sp)
 			if(sp->scanflags==NV_FUNCTION || sp->scanflags==(NV_NOFREE|NV_BINARY|NV_RAW))
 			{
 				int n = strlen(tp->mapname);
-				if(memcmp(np->nvname,tp->mapname,n) || np->nvname[n]!='.' || strchr(&np->nvname[n+1],'.'))
+				if(strncmp(np->nvname,tp->mapname,n) || np->nvname[n]!='.' || strchr(&np->nvname[n+1],'.'))
 					return(0);
 			}
 			else if((sp->scanflags==NV_UTOL||sp->scanflags==NV_LTOU) && (cp=(char*)nv_mapchar(np,0)) && strcmp(cp,tp->mapname))
@@ -2420,7 +2420,7 @@ static void table_unset(register Dt_t *root, int flags, Dt_t *oroot)
 		{
 			int len = strlen(np->nvname);
 			npnext = (Namval_t*)dtnext(root,np);
-			while((nq=npnext) && memcmp(np->nvname,nq->nvname,len)==0 && nq->nvname[len]=='.')
+			while((nq=npnext) && strncmp(np->nvname,nq->nvname,len)==0 && nq->nvname[len]=='.')
 
 			{
 				_nv_unset(nq,flags);
@@ -3584,7 +3584,7 @@ char *nv_name(register Namval_t *np)
 		{
 			char *name = nv_name(sh.namespace);
 			int n = strlen(name);
-			if(memcmp(np->nvname,name,n)==0 && np->nvname[n]=='.')
+			if(strncmp(np->nvname,name,n)==0 && np->nvname[n]=='.')
 				return(np->nvname+n+1);
 		}
 #endif /* SHOPT_NAMESPACE */
diff --git a/src/cmd/ksh93/sh/nvdisc.c b/src/cmd/ksh93/sh/nvdisc.c
index 26bf7a694..b2fa557f1 100644
--- a/src/cmd/ksh93/sh/nvdisc.c
+++ b/src/cmd/ksh93/sh/nvdisc.c
@@ -159,7 +159,6 @@ void nv_putv(Namval_t *np, const char *value, int flags, register Namfun_t *nfp)
 #define	APPEND		2
 #define	UNASSIGN	3
 #define	LOOKUPN		4
-#define BLOCKED		((Namval_t*)&nv_local)
 
 struct	vardisc
 {
@@ -1174,7 +1173,7 @@ Namval_t *sh_addbuiltin(const char *path, Shbltin_f bltin, void *extra)
 	np->nvfun = 0;
 	if(bltin)
 	{
-		np->nvalue.bfp = (Nambfp_f)bltin;
+		np->nvalue.bfp = bltin;
 		nv_onattr(np,NV_BLTIN|NV_NOFREE);
 		np->nvfun = (Namfun_t*)extra;
 	}
diff --git a/src/cmd/ksh93/sh/nvtype.c b/src/cmd/ksh93/sh/nvtype.c
index e5869a949..0032e288b 100644
--- a/src/cmd/ksh93/sh/nvtype.c
+++ b/src/cmd/ksh93/sh/nvtype.c
@@ -488,9 +488,9 @@ static Namval_t *create_type(Namval_t *np,const char *name,int flag,Namfun_t *fp
 	{
 		char *base =  (char*)np-sizeof(Dtlink_t);
 		int m=strlen(np->nvname);
-		while((nq=nv_namptr(base,++i)) && memcmp(nq->nvname,np->nvname,m)==0)
+		while((nq=nv_namptr(base,++i)) && strncmp(nq->nvname,np->nvname,m)==0)
 		{
-			if(nq->nvname[m]=='.' && memcmp(name,&nq->nvname[m+1],n)==0 && nq->nvname[m+n+1]==0)
+			if(nq->nvname[m]=='.' && strncmp(name,&nq->nvname[m+1],n)==0 && nq->nvname[m+n+1]==0)
 				goto found;
 		}
 		nq = 0;
@@ -498,7 +498,7 @@ static Namval_t *create_type(Namval_t *np,const char *name,int flag,Namfun_t *fp
 	else for(i=0; i < dp->numnodes; i++)
 	{
 		nq = nv_namptr(dp->nodes,i);
-		if((n==0||memcmp(name,nq->nvname,n)==0) && nq->nvname[n]==0)
+		if((n==0||strncmp(name,nq->nvname,n)==0) && nq->nvname[n]==0)
 		{
 			while(nv_isref(nq))
 				nq = nq->nvalue.nrp->np;
@@ -516,7 +516,7 @@ found:
 	{
 		if(name[n]!='=') for(i=0; i < dp->ndisc; i++)
 		{
-			if((memcmp(name,dp->names[i],n)==0) && dp->names[i][n]==0)
+			if((strncmp(name,dp->names[i],n)==0) && dp->names[i][n]==0)
 				return(nq);
 		}
 		errormsg(SH_DICT,ERROR_exit(1),e_notelem,n,name,nv_name(np));
@@ -660,7 +660,7 @@ static int typeinfo(Opt_t* op, Sfio_t *out, const char *str, Optdisc_t *fp)
 		{
 			sfprintf(out,"\t[+%s?%s.\n",nq->nvname,tp->nvname);
 			n = strlen(nq->nvname);
-			while((cp=nv_namptr(dp->nodes,i+1)->nvname) && memcmp(cp,nq->nvname,n)==0 && cp[n]=='.')
+			while((cp=nv_namptr(dp->nodes,i+1)->nvname) && strncmp(cp,nq->nvname,n)==0 && cp[n]=='.')
 				i++;
 		}
 		else
@@ -741,7 +741,7 @@ static int std_disc(Namval_t *mp, Namtype_t *pp)
 	}
 	return(0);
 found:
-	if(memcmp(sp=mp->nvname,NV_CLASS,sizeof(NV_CLASS)-1)==0)
+	if(strncmp(sp=mp->nvname,NV_CLASS,sizeof(NV_CLASS)-1)==0)
 		sp += sizeof(NV_CLASS);
 	sp += strlen(pp->fun.type->nvname)+1;
 	if(sp == cp)
@@ -749,7 +749,7 @@ found:
 	else for(i=1; i < pp->numnodes; i++)
 	{
 		nq = nv_namptr(pp->nodes,i);
-		if(memcmp(nq->nvname, sp, cp-sp-1)==0)
+		if(strncmp(nq->nvname, sp, cp-sp-1)==0)
 		{
 			np = nq;
 			break;
@@ -849,7 +849,7 @@ Namval_t *nv_mktype(Namval_t **nodes, int numnodes)
 			if(!std_disc(np, (Namtype_t*)0))
 			{
 				size += strlen(np->nvname+m)+1;
-				if(memcmp(np->nvname,NV_CLASS,sizeof(NV_CLASS)-1)==0)
+				if(strncmp(np->nvname,NV_CLASS,sizeof(NV_CLASS)-1)==0)
 					size -= sizeof(NV_CLASS);
 				nd++;
 			}
@@ -894,7 +894,7 @@ Namval_t *nv_mktype(Namval_t **nodes, int numnodes)
 			else
 				size += n + dp->numnodes*(strlen(&np->nvname[m])+1);
 			n = strlen(np->nvname);
-			while((i+1) < numnodes && (cp=nodes[i+1]->nvname) && memcmp(cp,np->nvname,n)==0 && cp[n]=='.')
+			while((i+1) < numnodes && (cp=nodes[i+1]->nvname) && strncmp(cp,np->nvname,n)==0 && cp[n]=='.')
 				i++;
 		}
 		else if(nv_isattr(np,NV_REF))
@@ -939,7 +939,7 @@ Namval_t *nv_mktype(Namval_t **nodes, int numnodes)
 		if(is_afunction(np))
 		{
 			sp = np->nvname+m;
-			if(memcmp(np->nvname,NV_CLASS,sizeof(NV_CLASS)-1)==0)
+			if(strncmp(np->nvname,NV_CLASS,sizeof(NV_CLASS)-1)==0)
 				sp += sizeof(NV_CLASS);
 			if(!std_disc(np, pp))
 			{
@@ -1098,7 +1098,7 @@ Namval_t *nv_mktype(Namval_t **nodes, int numnodes)
 				cp = strcopy(cp,nr->nvname);
 				*cp++ = 0;
 			}
-			while((i+1) < numnodes && (cname=&nodes[i+1]->nvname[m]) && memcmp(cname,&np->nvname[m],n)==0 && cname[n]=='.')
+			while((i+1) < numnodes && (cname=&nodes[i+1]->nvname[m]) && strncmp(cname,&np->nvname[m],n)==0 && cname[n]=='.')
 			{
 				int j=kfirst;
 				nv_unset(np);
diff --git a/src/cmd/ksh93/sh/parse.c b/src/cmd/ksh93/sh/parse.c
index 02550800c..9d290ef4f 100644
--- a/src/cmd/ksh93/sh/parse.c
+++ b/src/cmd/ksh93/sh/parse.c
@@ -188,11 +188,11 @@ static void check_typedef(struct comnod *tp, char intypeset)
 		struct argnod *ap = tp->comarg;
 		while(ap = ap->argnxt.ap)
 		{
-			if(!(ap->argflag&ARG_RAW) || memcmp(ap->argval,"--",2))
+			if(!(ap->argflag&ARG_RAW) || strncmp(ap->argval,"--",2))
 				break;
 			if(sh_isoption(SH_NOEXEC))
 				typeset_order(ap->argval,tp->comline);
-			if(memcmp(ap->argval,"-T",2)==0)
+			if(strncmp(ap->argval,"-T",2)==0)
 			{
 				if(ap->argval[2])
 					cp = ap->argval+2;
@@ -220,11 +220,11 @@ static void check_typedef(struct comnod *tp, char intypeset)
 				return;
 			cp = argv[opt_info.index];
 		}
-		else while((cp = *argv++) && memcmp(cp,"--",2))
+		else while((cp = *argv++) && strncmp(cp,"--",2))
 		{
 			if(sh_isoption(SH_NOEXEC))
 				typeset_order(cp,tp->comline);
-			if(memcmp(cp,"-T",2)==0)
+			if(strncmp(cp,"-T",2)==0)
 			{
 				if(cp[2])
 					cp = cp+2;
@@ -876,7 +876,7 @@ static Shnode_t *funct(Lex_t *lexp)
 			}
 			nargs = argv-argv0;
 			size += sizeof(struct dolnod)+(nargs+ARG_SPARE)*sizeof(char*);
-			if(sh.shcomp && memcmp(".sh.math.",t->funct.functnam,9)==0)
+			if(sh.shcomp && strncmp(".sh.math.",t->funct.functnam,9)==0)
 			{
 				Namval_t *np= nv_open(t->funct.functnam,sh.fun_tree,NV_ADD|NV_VARNAME);
 				np->nvalue.rp = new_of(struct Ufunction,sh.funload?sizeof(Dtlink_t):0);
diff --git a/src/cmd/ksh93/sh/path.c b/src/cmd/ksh93/sh/path.c
index 9e8f4ba15..1937ff0d4 100644
--- a/src/cmd/ksh93/sh/path.c
+++ b/src/cmd/ksh93/sh/path.c
@@ -1581,7 +1581,7 @@ static int checkdotpaths(Pathcomp_t *first, Pathcomp_t* old,Pathcomp_t *pp, int
 			}
 			*cp = 0;
 			m = ep ? (ep-sp) : 0;
-			if(m==0 || m==6 && memcmp((void*)sp,(void*)"FPATH=",m)==0)
+			if(m==0 || m==6 && strncmp(sp,"FPATH=",m)==0)
 			{
 				if(first)
 				{
@@ -1591,7 +1591,7 @@ static int checkdotpaths(Pathcomp_t *first, Pathcomp_t* old,Pathcomp_t *pp, int
 					path_addcomp(first,old,stakptr(offset),PATH_FPATH|PATH_BFPATH);
 				}
 			}
-			else if(m==11 && memcmp((void*)sp,(void*)"PLUGIN_LIB=",m)==0)
+			else if(m==11 && strncmp(sp,"PLUGIN_LIB=",m)==0)
 			{
 				if(pp->bbuf)
 					free(pp->bbuf);
diff --git a/src/lib/libast/comp/conf.sh b/src/lib/libast/comp/conf.sh
index acdc77997..7f3af4c15 100644
--- a/src/lib/libast/comp/conf.sh
+++ b/src/lib/libast/comp/conf.sh
@@ -2,7 +2,7 @@
 #                                                                      #
 #               This software is part of the ast package               #
 #          Copyright (c) 1985-2011 AT&T Intellectual Property          #
-#          Copyright (c) 2020-2021 Contributors to ksh 93u+m           #
+#          Copyright (c) 2020-2022 Contributors to ksh 93u+m           #
 #                      and is licensed under the                       #
 #                 Eclipse Public License, Version 1.0                  #
 #                    by AT&T Intellectual Property                     #
diff --git a/src/lib/libast/comp/syslog.c b/src/lib/libast/comp/syslog.c
index c9eac2007..af9c53c0e 100644
--- a/src/lib/libast/comp/syslog.c
+++ b/src/lib/libast/comp/syslog.c
@@ -2,7 +2,7 @@
 *                                                                      *
 *               This software is part of the ast package               *
 *          Copyright (c) 1985-2012 AT&T Intellectual Property          *
-*          Copyright (c) 2020-2021 Contributors to ksh 93u+m           *
+*          Copyright (c) 2020-2022 Contributors to ksh 93u+m           *
 *                      and is licensed under the                       *
 *                 Eclipse Public License, Version 1.0                  *
 *                    by AT&T Intellectual Property                     *
@@ -130,7 +130,7 @@ str2inet(register char* s, char* prot, struct sockaddr_in* addr)
 	unsigned long	a = 0;
 	unsigned short	p = 0;
 
-	if (!memcmp(s, "local/", 6))
+	if (!strncmp(s, "local/", 6))
 	{
 		a = INADDR_LOOPBACK;
 		n = 4;