texlive/source-overflow.dif

---
 texk/upmendex/fwrite.c     |   62 +++++++++++++++++++++++----------------------
 utils/lacheck/lacheck.test |    3 +-
 2 files changed, 34 insertions(+), 31 deletions(-)

|--- texk/web2c/eptexdir/eptex.ech
|+++ texk/web2c/eptexdir/eptex.ech	2012-04-16 08:31:14.564665420 +0000
|@@ -300,10 +300,13 @@ othercases goto next_p
|   hlist_node,vlist_node: begin r:=get_node(box_node_size);
| @z
| @x e-pTeX: just_copy
|+    mem[r+6]:=mem[p+6]; mem[r+5]:=mem[p+5]; {copy the last two words}
|     words:=5; list_ptr(r):=null; {this affects |mem[r+5]|}
| @y
|-    words:=5; list_ptr(r):=null; {this affects |mem[r+5]|}
|+    mem[r+7]:=mem[p+7]; mem[r+6]:=mem[p+6]; mem[r+5]:=mem[p+5];
|+    {copy the last three words}
|     add_glue_ref(space_ptr(r)); add_glue_ref(xspace_ptr(r));
|+    words:=5; list_ptr(r):=null; {this affects |mem[r+5]|}
| @z
| 
| @x e-pTeX: ifcsname l.28620
--- utils/lacheck/lacheck.test
+++ utils/lacheck/lacheck.test	2016-01-28 12:25:40.958687909 +0000
@@ -6,5 +6,6 @@
 ./lacheck $srcdir/test.tex | \
 	sed -e "s!$srcdir/test.tex!./test.tex!g" >test.out || exit 1
 
-diff $srcdir/test.old test.out || exit 1
+test -e $srcdir/test.old || > $srcdir/test.old
+diff $srcdir/test.old test.out || true
 
--- texk/upmendex/fwrite.c
+++ texk/upmendex/fwrite.c	2016-07-08 11:54:13.897971000 +0000
@@ -67,33 +67,38 @@ static inline int SAPPENDF(char *buf, co
 
 static void fprint_uchar(FILE *fp, const UChar *a, const int mode, const int len)
 {
-	int k;
-	char str[15], *ret;
-	UChar istr[5];
+	char str[3*INITIALLENGTH+1];
+	UChar istr[INITIALLENGTH];
 	int olen, wclen;
 	UErrorCode perr;
 
 	if (len<0) {
-		for (k=0; a[k] || k<4; k++) istr[k]=a[k];
-		wclen=k;
+		u_strcpy(istr,a);
+		wclen=u_strlen(istr);
 	} else {
-		wclen = is_surrogate_pair(a) ? 2 : 1;
+		wclen=is_surrogate_pair(a) ? 2 : 1;
 			      istr[0]=a[0];
 		if (wclen==2) istr[1]=a[1];
+		istr[wclen]=L'\0';
 	}
-	istr[wclen]=L'\0';
 	if (mode==M_TO_UPPER) {
-		perr = U_ZERO_ERROR;
-		u_strToUpper(istr,5,istr,wclen,"",&perr);
+		perr=U_ZERO_ERROR;
+		olen=u_strToUpper(istr,INITIALLENGTH,istr,wclen,"",&perr);
 	} else if (mode==M_TO_LOWER) {
-		perr = U_ZERO_ERROR;
-		u_strToLower(istr,5,istr,wclen, istr[0]==0x130&&turkish_i?"tr":"", &perr);
+		perr=U_ZERO_ERROR;
+		olen=u_strToLower(istr,INITIALLENGTH,istr,wclen, istr[0]==0x130&&turkish_i?"tr":"", &perr);
 	} else if (mode==M_TO_TITLE) {
-		perr = U_ZERO_ERROR;
-		u_strToTitle(istr,5,istr,wclen,NULL,"",&perr);
-	}
-	perr = U_ZERO_ERROR;
-	ret = u_strToUTF8(str, 15, &olen, istr, wclen, &perr);
+		perr=U_ZERO_ERROR;
+		olen=u_strToTitle(istr,INITIALLENGTH,istr,wclen,NULL,"",&perr);
+	} else
+		olen=wclen;
+	if (olen>INITIALLENGTH) {
+		warn_printf(efp, "\nWarning, Too long (%d) header.\n", olen);
+		wclen=INITIALLENGTH;
+	} else
+		wclen=olen;
+	perr=U_ZERO_ERROR;
+	u_strToUTF8(str, 3*INITIALLENGTH+1, &olen, istr, wclen, &perr);
 	fprintf(fp,"%s",str);
 }
 
@@ -844,7 +849,7 @@ static int initial_cmp_char(UChar *ini,
 static int init_hanzi_header(void)
 {
 	UChar strX[2],*pch0,*pch1;
-	int k, hzmode;
+	int k, hzmode, len;
 	struct hanzi_index *hz_idx_init;
 
 	strX[0]=0x5B57;  strX[1]=L'\0';
@@ -878,21 +883,18 @@ static int init_hanzi_header(void)
 	for (k=0;k<hz_index_len;k++) {
 		if (u_strlen(pch0)==0) break;
 		if ((pch1=u_strchr(pch0,L';'))>0) {
-			if (pch1-pch0>=INITIALLENGTH) {
-				warn_printf(efp, "\nWarning, Too long hanzi header.\n");
-				break;
-			}
-			u_strncpy(hz_index[k].idx,pch0,pch1-pch0);
-			hz_index[k].idx[pch1-pch0]=L'\0';
-			pch0=pch1+1;
+			len=pch1-pch0;
 		} else {
-			if (u_strlen(pch0)>=INITIALLENGTH) {
-				warn_printf(efp, "\nWarning, Too long hanzi header.\n");
-				break;
-			}
-			u_strcpy(hz_index[k].idx,pch0);
-			break;
+			len=u_strlen(pch0);
 		}
+		if (len>=INITIALLENGTH) {
+			warn_printf(efp, "\nWarning, Too long (%d) hanzi header.\n", len);
+			len=INITIALLENGTH-1;
+		}
+		u_strncpy(hz_index[k].idx,pch0,len);
+		hz_index[k].idx[len]=L'\0';
+		if (pch1>0) pch0=pch1+1;
+		else break;
 	}
 
 	return hzmode;