diff --git a/gui-win32/r16.c b/gui-win32/r16.c
index 9de6783..2add199 100644
--- a/gui-win32/r16.c
+++ b/gui-win32/r16.c
@@ -59,7 +59,7 @@ runes16toutf(char *p, Rune16 *r, int nc)
 
 	op = p;
 	ep = p + nc;
-	while(c = *r++) {
+	while((c = *r++)) {
 		n = 1;
 		if(c >= Runeself)
 			n = runelen(c);
diff --git a/gui-win32/r16.h b/gui-win32/r16.h
index ea4ee28..2c40026 100644
--- a/gui-win32/r16.h
+++ b/gui-win32/r16.h
@@ -9,3 +9,4 @@ Rune16*	runes16dup(Rune16*);
 Rune16*	utftorunes16(Rune16*, char*, int);
 char*	runes16toutf(char*, Rune16*, int);
 int		runes16cmp(Rune16*, Rune16*);
+void*	smalloc(ulong);
diff --git a/gui-win32/screen.c b/gui-win32/screen.c
index c7ba8b2..0364545 100644
--- a/gui-win32/screen.c
+++ b/gui-win32/screen.c
@@ -41,7 +41,7 @@ static Rendez	rend;
 Point	ZP;
 
 uint windowStyle;
-const uint BORDERLESS = WS_MAXIMIZEBOX | WS_MINIMIZEBOX | WS_THICKFRAME | WS_SYSMENU | WS_DLGFRAME | WS_CLIPSIBLINGS | WS_VISIBLE | WS_POPUP ^ WS_MINIMIZE | WS_MAXIMIZE;
+const uint BORDERLESS = (WS_MAXIMIZEBOX | WS_MINIMIZEBOX | WS_THICKFRAME | WS_SYSMENU | WS_DLGFRAME | WS_CLIPSIBLINGS | WS_VISIBLE) | (WS_POPUP ^ WS_MINIMIZE) | WS_MAXIMIZE;
 
 static int
 isready(void*a)
@@ -570,12 +570,12 @@ setcolor(ulong index, ulong red, ulong green, ulong blue)
 }
 
 
-uchar*
+char*
 clipreadunicode(HANDLE h)
 {
 	Rune16 *p;
 	int n;
-	uchar *q;
+	char *q;
 
 	p = GlobalLock(h);
 	n = rune16nlen(p, runes16len(p)+1);
@@ -586,10 +586,10 @@ clipreadunicode(HANDLE h)
 	return q;
 }
 
-uchar *
+char *
 clipreadutf(HANDLE h)
 {
-	uchar *p;
+	char *p;
 
 	p = GlobalLock(h);
 	p = strdup(p);
@@ -602,7 +602,7 @@ char*
 clipread(void)
 {
 	HANDLE h;
-	uchar *p;
+	char *p;
 
 	if(!OpenClipboard(window)) {
 		oserror();
@@ -626,7 +626,7 @@ int
 clipwrite(char *buf)
 {
 	HANDLE h;
-	char *p, *e;
+	char *p;
 	Rune16 *rp;
 	int n = strlen(buf);
 
diff --git a/include/libsec.h b/include/libsec.h
index 96d4811..d35a9b5 100644
--- a/include/libsec.h
+++ b/include/libsec.h
@@ -132,7 +132,7 @@ struct DESstate
 
 void	setupDESstate(DESstate *s, uchar key[8], uchar *ivec);
 void	des_key_setup(uchar[8], ulong[32]);
-void	block_cipher(ulong*, uchar*, int);
+void	block_cipher(ulong[32], uchar[8], int);
 void	desCBCencrypt(uchar*, int, DESstate*);
 void	desCBCdecrypt(uchar*, int, DESstate*);
 void	desECBencrypt(uchar*, int, DESstate*);
@@ -163,7 +163,7 @@ struct DES3state
 };
 
 void	setupDES3state(DES3state *s, uchar key[3][8], uchar *ivec);
-void	triple_block_cipher(ulong keys[3][32], uchar*, int);
+void	triple_block_cipher(ulong keys[3][32], uchar[8], int);
 void	des3CBCencrypt(uchar*, int, DES3state*);
 void	des3CBCdecrypt(uchar*, int, DES3state*);
 void	des3ECBencrypt(uchar*, int, DES3state*);
@@ -192,7 +192,7 @@ struct DigestState
 {
 	uvlong	len;
 	union {
-		u32int	state[8];
+		u32int	state[16];
 		u64int	bstate[8];
 	};
 	uchar	buf[256];
diff --git a/kern/devmnt.c b/kern/devmnt.c
index 9121bfd..06c28fe 100644
--- a/kern/devmnt.c
+++ b/kern/devmnt.c
@@ -1113,8 +1113,8 @@ mntfree(Mntrpc *r)
 	lock(&mntalloc.lk);
 	if(mntalloc.nrpcfree >= 10){
 		free(r->rpc);
-		free(r);
 		freetag(r->request.tag);
+		free(r);
 	}
 	else{
 		r->list = mntalloc.rpcfree;
diff --git a/kern/win32.c b/kern/win32.c
index d18c790..99e7d1c 100644
--- a/kern/win32.c
+++ b/kern/win32.c
@@ -287,7 +287,7 @@ WinMain(HINSTANCE x, HINSTANCE y, LPSTR z, int w)
 	Rune *warg;
 
 	if(0 && win_hasunicode()){
-		warg = GetCommandLineW();
+		warg = (Rune*)GetCommandLineW();
 		n = (wstrlen(warg)+1)*UTFmax;
 		arg = malloc(n);
 		wstrtoutf(arg, warg, n);
@@ -465,6 +465,6 @@ showfilewrite(char *a, int n)
 		action = Lopen;
 		arg = cmd;
 	}
-	ShellExecute(0, 0, action, arg, 0, SW_SHOWNORMAL);
+	ShellExecute(0, 0, (LPCWSTR)action, (LPCWSTR)arg, 0, SW_SHOWNORMAL);
 	return n;
 }
diff --git a/libauthsrv/opasstokey.c b/libauthsrv/opasstokey.c
index d263d4b..0db6a34 100644
--- a/libauthsrv/opasstokey.c
+++ b/libauthsrv/opasstokey.c
@@ -14,7 +14,7 @@ opasstokey(char *key, char *p)
 		return 0;
 	if(n > 10)
 		n = 10;
-	strncpy((char*)t, p, n);
+	memcpy((char*)t, p, n);
 	if(n >= 9){
 		c = p[8] & 0xf;
 		if(n == 10)
diff --git a/libc/runevsmprint.c b/libc/runevsmprint.c
index 6d391e2..7643c68 100644
--- a/libc/runevsmprint.c
+++ b/libc/runevsmprint.c
@@ -6,23 +6,24 @@ static int
 runeFmtStrFlush(Fmt *f)
 {
 	Rune *s;
-	int n;
+	int n, d;
 
 	if(f->start == nil)
 		return 0;
 	n = (uintptr)f->farg;
 	n *= 2;
-	s = (Rune*)f->start;
-	f->start = realloc(s, sizeof(Rune)*n);
-	if(f->start == nil){
+	d = (Rune*)f->to - (Rune*)f->start;
+	s = realloc(f->start, sizeof(Rune)*n);
+	if(s == nil){
 		f->farg = nil;
 		f->to = nil;
 		f->stop = nil;
-		free(s);
+		free(f->start);
 		return 0;
 	}
+	f->start = s;
 	f->farg = (void*)(uintptr)n;
-	f->to = (Rune*)f->start + ((Rune*)f->to - s);
+	f->to = (Rune*)f->start + d;
 	f->stop = (Rune*)f->start + n - 1;
 	return 1;
 }
diff --git a/libc/strtod.c b/libc/strtod.c
index a48abe5..f3b1637 100644
--- a/libc/strtod.c
+++ b/libc/strtod.c
@@ -1,5 +1,6 @@
 #include <u.h>
 #include <libc.h>
+#include <ctype.h>
 #include "fmtdef.h"
 
 static ulong
diff --git a/libc/vsmprint.c b/libc/vsmprint.c
index df5abe4..27d08ac 100644
--- a/libc/vsmprint.c
+++ b/libc/vsmprint.c
@@ -6,23 +6,24 @@ static int
 fmtStrFlush(Fmt *f)
 {
 	char *s;
-	int n;
+	int n, d;
 
 	if(f->start == nil)
 		return 0;
 	n = (uintptr)f->farg;
 	n *= 2;
-	s = (char*)f->start;
-	f->start = realloc(s, n);
-	if(f->start == nil){
+	d = (char*)f->to - (char*)f->start;
+	s = realloc(f->start, n);
+	if(s == nil){
 		f->farg = nil;
 		f->to = nil;
 		f->stop = nil;
-		free(s);
+		free(f->start);
 		return 0;
 	}
+	f->start = s;
 	f->farg = (void*)(uintptr)n;
-	f->to = (char*)f->start + ((char*)f->to - s);
+	f->to = (char*)f->start + d;
 	f->stop = (char*)f->start + n - 1;
 	return 1;
 }
diff --git a/libmemdraw/draw.c b/libmemdraw/draw.c
index 7c6f486..c569a74 100644
--- a/libmemdraw/draw.c
+++ b/libmemdraw/draw.c
@@ -101,7 +101,7 @@ _memimagedrawsetup(Memimage *dst, Rectangle r, Memimage *src, Point p0, Memimage
 	if(mask == nil)
 		mask = memopaque;
 
-DBG	print("memimagedraw %p/%luX %R @ %p %p/%luX %P %p/%luX %P... ", dst, dst->chan, r, dst->data->bdata, src, src->chan, p0, mask, mask->chan, p1);
+DBG print("memimagedraw %p/%luX %R @ %p %p/%luX %P %p/%luX %P... ", dst, dst->chan, r, dst->data->bdata, src, src->chan, p0, mask, mask->chan, p1);
 
 	if(drawclip(dst, &r, src, &p0, mask, &p1, &par.sr, &par.mr) == 0){
 //		if(drawdebug)
@@ -776,9 +776,9 @@ DBG print("[");
 		bmask = rdmask(&mpar, mpar.bufbase, masky);
 DBG print("]\n");
 		bdst = rddst(&dpar, dpar.bufbase, dsty);
-DBG		dumpbuf("src", bsrc, dx);
-DBG		dumpbuf("mask", bmask, dx);
-DBG		dumpbuf("dst", bdst, dx);
+DBG dumpbuf("src", bsrc, dx);
+DBG dumpbuf("mask", bmask, dx);
+DBG dumpbuf("dst", bdst, dx);
 		bdst = calc(bdst, bsrc, bmask, dx, isgrey, op);
 		wrdst(&dpar, dpar.bytermin+dsty*dpar.bwidth, bdst);
 	}
diff --git a/libmemlayer/draw.c b/libmemlayer/draw.c
index c352a0b..d6c6c25 100644
--- a/libmemlayer/draw.c
+++ b/libmemlayer/draw.c
@@ -64,7 +64,8 @@ memdraw(Memimage *dst, Rectangle r, Memimage *src, Point p0, Memimage *mask, Poi
 		mask = memopaque;
 
 	if(mask->layer){
-if(drawdebug)	iprint("mask->layer != nil\n");
+		if(drawdebug)
+			iprint("mask->layer != nil\n");
 		return;	/* too hard, at least for now */
 	}
 
@@ -75,7 +76,8 @@ if(drawdebug)	iprint("mask->layer != nil\n");
 	}
 
 	if(drawclip(dst, &r, src, &p0, mask, &p1, &srcr, &mr) == 0){
-if(drawdebug)	iprint("drawclip dstcr %R srccr %R maskcr %R\n", dst->clipr, src->clipr, mask->clipr);
+		if(drawdebug)
+			iprint("drawclip dstcr %R srccr %R maskcr %R\n", dst->clipr, src->clipr, mask->clipr);
 		return;
 	}
 
diff --git a/libsec/aes.c b/libsec/aes.c
index 3999c23..2a16e14 100644
--- a/libsec/aes.c
+++ b/libsec/aes.c
@@ -61,8 +61,6 @@ static uchar basekey[3][16] = {
 
 static int aes_setupEnc(ulong rk[/*4*(Nr + 1)*/], const uchar cipherKey[],
 		int keyBits);
-static int aes_setupDec(ulong rk[/*4*(Nr + 1)*/], const uchar cipherKey[],
-		int keyBits);
 static int aes_setup(ulong erk[/*4*(Nr + 1)*/], ulong drk[/*4*(Nr + 1)*/],
 		const uchar cipherKey[], int keyBits);
 
@@ -1240,56 +1238,6 @@ aes_setupEnc(ulong rk[/*4*(Nr + 1)*/], const uchar cipherKey[], int keyBits)
 	return 0;
 }
 
-/**
- * Expand the cipher key into the decryption key schedule.
- *
- * @return	the number of rounds for the given cipher key size.
- */
-static int
-aes_setupDec(ulong rk[/* 4*(Nr + 1) */], const uchar cipherKey[], int keyBits)
-{
-	int Nr, i, j;
-	ulong temp;
-
-	/* expand the cipher key: */
-	Nr = aes_setupEnc(rk, cipherKey, keyBits);
-	/* invert the order of the round keys: */
-	for (i = 0, j = 4*Nr; i < j; i += 4, j -= 4) {
-		temp = rk[i    ]; rk[i    ] = rk[j    ]; rk[j    ] = temp;
-		temp = rk[i + 1]; rk[i + 1] = rk[j + 1]; rk[j + 1] = temp;
-		temp = rk[i + 2]; rk[i + 2] = rk[j + 2]; rk[j + 2] = temp;
-		temp = rk[i + 3]; rk[i + 3] = rk[j + 3]; rk[j + 3] = temp;
-	}
-	/*
-	 * apply the inverse MixColumn transform to all round keys
-	 * but the first and the last:
-	 */
-	for (i = 1; i < Nr; i++) {
-		rk += 4;
-		rk[0] =
-			Td0[Te4[(rk[0] >> 24)       ]] ^
-			Td1[Te4[(rk[0] >> 16) & 0xff]] ^
-			Td2[Te4[(rk[0] >>  8) & 0xff]] ^
-			Td3[Te4[(rk[0]      ) & 0xff]];
-		rk[1] =
-			Td0[Te4[(rk[1] >> 24)       ]] ^
-			Td1[Te4[(rk[1] >> 16) & 0xff]] ^
-			Td2[Te4[(rk[1] >>  8) & 0xff]] ^
-			Td3[Te4[(rk[1]      ) & 0xff]];
-		rk[2] =
-			Td0[Te4[(rk[2] >> 24)       ]] ^
-			Td1[Te4[(rk[2] >> 16) & 0xff]] ^
-			Td2[Te4[(rk[2] >>  8) & 0xff]] ^
-			Td3[Te4[(rk[2]      ) & 0xff]];
-		rk[3] =
-			Td0[Te4[(rk[3] >> 24)       ]] ^
-			Td1[Te4[(rk[3] >> 16) & 0xff]] ^
-			Td2[Te4[(rk[3] >>  8) & 0xff]] ^
-			Td3[Te4[(rk[3]      ) & 0xff]];
-	}
-	return Nr;
-}
-
 /* using round keys in rk, perform Nr rounds of encrypting pt into ct */
 void
 aes_encrypt(const ulong rk[/* 4*(Nr + 1) */], int Nr, const uchar pt[16],
diff --git a/libsec/des.c b/libsec/des.c
index c54541c..090fd4b 100644
--- a/libsec/des.c
+++ b/libsec/des.c
@@ -369,7 +369,7 @@ keycompperm(u32int left, u32int right, ulong *ek)
 }
 
 void
-des_key_setup(uchar key[8], ulong *ek)
+des_key_setup(uchar key[8], ulong ek[32])
 {
 	u32int left, right, v0, v1;
 
@@ -471,7 +471,7 @@ des64to56(uchar *k64, uchar *k56)
 }
 
 void
-key_setup(uchar key[7], ulong *ek)
+key_setup(uchar key[7], ulong ek[32])
 {
 	uchar k64[8];