Update.

2000-09-18  Ulrich Drepper  <drepper@redhat.com>

	* version.h (VERSION): Bump to 2.1.94.

	* malloc/mtrace.c (mtrace): Mark stream as close on exec.

2000-09-17  Bruno Haible  <haible@clisp.cons.org>

	* iconvdata/utf-16.c (BODY for TO_LOOP): Reject UCS-4 input in the
	range 0xD800..0xDFFF.
	* iconvdata/unicode.c (BODY for TO_LOOP): Likewise.
	(BODY for FROM_LOOP): Likewise.
	* iconv/gconv_simple.c (ucs2_internal_loop): Likewise.
	(internal_ucs2_loop): Likewise.
	(ucs2reverse_internal_loop): Likewise.
	(internal_ucs2reverse_loop): Likewise.

2000-09-17  Bruno Haible  <haible@clisp.cons.org>

	* iconvdata/utf-16.c (gconv_init): Add missing slashes to encoding
	names.

2000-09-17  Bruno Haible  <haible@clisp.cons.org>

	* iconvdata/tst-table-from.c (main): Fix test for error on stdout.
	* iconvdata/tst-table-to.c (main): Likewise.

2000-09-17  Bruno Haible  <haible@clisp.cons.org>

	* iconvdata/iso-ir-165.c (__isoir165_from_tab): Renamed from
	__isoir165_tab.
	* iconvdata/cns11643.h (__cns11643l1_to_ucs4_tab): New declaration.
	* iconvdata/iso-2022-cn-ext.c: Include "cns11643.h".
	(GB7590_set, GB13132_set, CNS11643_3_set, CNS11643_4_set,
	CNS11643_5_set, CNS11643_6_set, CNS11643_7_set): Change enum values.
	(BODY for FROM_LOOP): Fix buffer overrun. Treat CNS11643 plane 3.
	Return __GCONV_INCOMPLETE_INPUT instead of __GCONV_EMPTY_INPUT.
	(BODY for TO_LOOP): Fix usage of `set' vs. `used'.  Fix typo that
	caused GB2312 to be used instead of ISO-IR-165. Treat CNS11643
	plane 3.  Fix shift sequences. Output announcement for SS2 and SS3
	encodings when needed.  When outputting an announcement, don't clear
	most other announcements.

2000-09-17  Bruno Haible  <haible@clisp.cons.org>

	* iconvdata/iso-2022-cn.c (BODY for FROM_LOOP): Fix buffer overrun.
	(BODY for TO_LOOP): Fix usage of `set' vs. `used'.

2000-09-14  Bruno Haible  <haible@clisp.cons.org>

	* intl/Versions: Add bind_textdomain_codeset.

8 files changed, 240 insertions, 105 deletions

diff --git a/iconvdata/cns11643.h b/iconvdata/cns11643.h
index b57aa9decb..8c73c06dff 100644
--- a/iconvdata/cns11643.h
+++ b/iconvdata/cns11643.h
@@ -20,8 +20,11 @@
 
 #include <stdint.h>
 
+/* Table for CNS 11643, plane 1 to UCS4 conversion.  */
+extern const uint16_t __cns11643l1_to_ucs4_tab[];
 /* Table for CNS 11643, plane 2 to UCS4 conversion.  */
 extern const uint16_t __cns11643l2_to_ucs4_tab[];
+/* Table for CNS 11643, plane 14 to UCS4 conversion.  */
 extern const uint16_t __cns11643l14_to_ucs4_tab[];
 
 
diff --git a/iconvdata/iso-2022-cn-ext.c b/iconvdata/iso-2022-cn-ext.c
index c1bd7ac1f0..32a639a0c5 100644
--- a/iconvdata/iso-2022-cn-ext.c
+++ b/iconvdata/iso-2022-cn-ext.c
@@ -24,6 +24,7 @@
 #include <string.h>
 #include "gb2312.h"
 #include "iso-ir-165.h"
+#include "cns11643.h"
 #include "cns11643l1.h"
 #include "cns11643l2.h"
 
@@ -80,41 +81,41 @@ enum
   ISO_IR_165_set,
   SO_mask = 7,
 
-  GB7589_set = 8,
-  GB13131_set = 16,
-  CNS11643_2_set = 24,
-  SS2_mask = 24,
+  GB7589_set = 1 << 3,
+  GB13131_set = 2 << 3,
+  CNS11643_2_set = 3 << 3,
+  SS2_mask = 3 << 3,
 
-  GB7590_set = 0,
-  GB13132_set = 32,
-  CNS11643_3_set = 64,
-  CNS11643_4_set = 96,
-  CNS11643_5_set = 128,
-  CNS11643_6_set = 160,
-  CNS11643_7_set = 192,
-  SS3_mask = 224,
+  GB7590_set = 1 << 5,
+  GB13132_set = 2 << 5,
+  CNS11643_3_set = 3 << 5,
+  CNS11643_4_set = 4 << 5,
+  CNS11643_5_set = 5 << 5,
+  CNS11643_6_set = 6 << 5,
+  CNS11643_7_set = 7 << 5,
+  SS3_mask = 7 << 5,
 
 #define CURRENT_MASK (SO_mask | SS2_mask | SS3_mask)
 
-  GB2312_ann = 256,
-  GB12345_ann = 512,
-  CNS11643_1_ann = 768,
-  ISO_IR_165_ann = 1024,
-  SO_ann = 1792,
+  GB2312_ann = 1 << 8,
+  GB12345_ann = 2 << 8,
+  CNS11643_1_ann = 3 << 8,
+  ISO_IR_165_ann = 4 << 8,
+  SO_ann = 7 << 8,
 
-  GB7589_ann = 2048,
-  GB13131_ann = 4096,
-  CNS11643_2_ann = 6144,
-  SS2_ann = 6144,
+  GB7589_ann = 1 << 11,
+  GB13131_ann = 2 << 11,
+  CNS11643_2_ann = 3 << 11,
+  SS2_ann = 3 << 11,
 
-  GB7590_ann = 8192,
-  GB13132_ann = 16384,
-  CNS11643_3_ann = 24576,
-  CNS11643_4_ann = 32768,
-  CNS11643_5_ann = 40960,
-  CNS11643_6_ann = 49152,
-  CNS11643_7_ann = 57344,
-  SS3_ann = 57344
+  GB7590_ann = 1 << 13,
+  GB13132_ann = 2 << 13,
+  CNS11643_3_ann = 3 << 13,
+  CNS11643_4_ann = 4 << 13,
+  CNS11643_5_ann = 5 << 13,
+  CNS11643_6_ann = 6 << 13,
+  CNS11643_7_ann = 7 << 13,
+  SS3_ann = 7 << 13
 };
 
 
@@ -190,16 +191,16 @@ enum
 	   - the initial byte of the SS2 sequence.			      \
 	   - the initial byte of the SS3 sequence.			      \
 	*/								      \
-	if (inptr + 1 > inend						      \
+	if (inptr + 2 > inend						      \
 	    || (inptr[1] == '$'						      \
-		&& (inptr + 2 > inend					      \
-		    || (inptr[2] == ')' && inptr + 3 > inend)		      \
-		    || (inptr[2] == '*' && inptr + 3 > inend)		      \
-		    || (inptr[2] == '+' && inptr + 3 > inend)))		      \
-	    || (inptr[1] == SS2_1 && inptr + 3 > inend)			      \
-	    || (inptr[1] == SS3_1 && inptr + 3 > inend))		      \
+		&& (inptr + 3 > inend					      \
+		    || (inptr[2] == ')' && inptr + 4 > inend)		      \
+		    || (inptr[2] == '*' && inptr + 4 > inend)		      \
+		    || (inptr[2] == '+' && inptr + 4 > inend)))		      \
+	    || (inptr[1] == SS2_1 && inptr + 4 > inend)			      \
+	    || (inptr[1] == SS3_1 && inptr + 4 > inend))		      \
 	  {								      \
-	    result = __GCONV_EMPTY_INPUT;				      \
+	    result = __GCONV_INCOMPLETE_INPUT;				      \
 	    break;							      \
 	  }								      \
 	if (inptr[1] == '$'						      \
@@ -285,17 +286,12 @@ enum
 	continue;							      \
       }									      \
 									      \
-    if (ch == ESC && (inend - inptr == 1 || inptr[1] == SS2_1))		      \
+    if (ch == ESC && inptr[1] == SS2_1)					      \
       {									      \
 	/* This is a character from CNS 11643 plane 2.			      \
 	   XXX We could test here whether the use of this character	      \
 	   set was announced.						      \
 	   XXX Current GB7589 and GB13131 are not supported.  */	      \
-	if (inend - inptr < 4)						      \
-	  {								      \
-	    result = __GCONV_INCOMPLETE_INPUT;				      \
-	    break;							      \
-	  }								      \
 	inptr += 2;							      \
 	ch = cns11643l2_to_ucs4 (&inptr, 2, 0);				      \
 	if (ch == __UNKNOWN_10646_CHAR)					      \
@@ -306,35 +302,53 @@ enum
 		result = __GCONV_ILLEGAL_INPUT;				      \
 		break;							      \
 	      }								      \
+	    inptr += 2;							      \
 	    ++*irreversible;						      \
 	    continue;							      \
 	  }								      \
       }									      \
-    /* Note that we can assume here that at least bytes are available if      \
+    /* Note that we can assume here that at least 4 bytes are available if    \
        the first byte is ESC since otherwise the first if would have been     \
        true.  */							      \
     else if (ch == ESC && inptr[1] == SS3_1)				      \
       {									      \
 	/* This is a character from CNS 11643 plane 3 or higher.	      \
-	   XXX Current GB7590 and GB13132 are not supported.  */	      \
-	if (inend - inptr < 4)						      \
+	   XXX Currently GB7590 and GB13132 are not supported.  */	      \
+	char buf[3];							      \
+	const char *tmp = buf;						      \
+									      \
+	buf[1] = inptr[2];						      \
+	buf[2] = inptr[3];						      \
+	switch (ann & SS3_ann)						      \
 	  {								      \
-	    result = __GCONV_INCOMPLETE_INPUT;				      \
+	  case CNS11643_3_ann:						      \
+	    /* CNS 11643 plane 3 is part of the old CNS 11643 plane 14.  */   \
+	    if (buf[1] < 0x62 || (buf[1] == 0x62 && buf[2] <= 0x45))	      \
+	      {								      \
+		buf[0] = 0x2e;						      \
+		ch = cns11643_to_ucs4 (&tmp, 3, 0);			      \
+	      }								      \
+	    else							      \
+	      ch = __UNKNOWN_10646_CHAR;				      \
+	    break;							      \
+	  default:							      \
+	    /* XXX Currently planes 4 to 7 are not supported.  */	      \
+	    ch = __UNKNOWN_10646_CHAR;					      \
 	    break;							      \
 	  }								      \
-	inptr += 2;							      \
-	ch = cns11643l2_to_ucs4 (&inptr, 2, 0);				      \
 	if (ch == __UNKNOWN_10646_CHAR)					      \
 	  {								      \
 	    if (! ignore_errors_p ())					      \
 	      {								      \
-		inptr -= 2;						      \
 		result = __GCONV_ILLEGAL_INPUT;				      \
 		break;							      \
 	      }								      \
+	    inptr += 4;							      \
 	    ++*irreversible;						      \
 	    continue;							      \
 	  }								      \
+	assert (tmp == buf + 3);					      \
+	inptr += 4;							      \
       }									      \
     else if (set == ASCII_set)						      \
       {									      \
@@ -361,7 +375,7 @@ enum
 									      \
 	if (ch == 0)							      \
 	  {								      \
-	    result = __GCONV_EMPTY_INPUT;				      \
+	    result = __GCONV_INCOMPLETE_INPUT;				      \
 	    break;							      \
 	  }								      \
 	else if (ch == __UNKNOWN_10646_CHAR)				      \
@@ -427,16 +441,16 @@ enum
 	char buf[2];							      \
 	int used;							      \
 									      \
-	if (set == GB2312_set || ((ann & CNS11643_1_ann) == 0		      \
-				  && (ann & ISO_IR_165_ann) == 0))	      \
+	if (set == GB2312_set || ((ann & SO_ann) != CNS11643_1_ann	      \
+				  && (ann & SO_ann) != ISO_IR_165_ann))	      \
 	  {								      \
 	    written = ucs4_to_gb2312 (ch, buf, 2);			      \
 	    used = GB2312_set;						      \
 	  }								      \
-	else if (set == ISO_IR_165_set || (ann & ISO_IR_165_set) != 0)	      \
+	else if (set == ISO_IR_165_set || (ann & SO_ann) == ISO_IR_165_set)   \
 	  {								      \
-	    written = ucs4_to_gb2312 (ch, buf, 2);			      \
-	    used = GB2312_set;						      \
+	    written = ucs4_to_isoir165 (ch, buf, 2);			      \
+	    used = ISO_IR_165_set;					      \
 	  }								      \
 	else								      \
 	  {								      \
@@ -454,29 +468,66 @@ enum
 	      used = CNS11643_2_set;					      \
 	    else							      \
 	      {								      \
-		/* Well, see whether we have to change the SO set.  */	      \
-		if (set != GB2312_set)					      \
-		  {							      \
-		    written = ucs4_to_gb2312 (ch, buf, 2);		      \
-		    if (written != __UNKNOWN_10646_CHAR)		      \
-		      used = GB2312_set;				      \
-		  }							      \
-		if (written == __UNKNOWN_10646_CHAR && set != ISO_IR_165_set) \
-		  {							      \
-		    written = ucs4_to_isoir165 (ch, buf, 2);		      \
-		    if (written != __UNKNOWN_10646_CHAR)		      \
-		      used = ISO_IR_165_set;				      \
-		  }							      \
-		if (written == __UNKNOWN_10646_CHAR && set != CNS11643_1_set) \
-		  {							      \
-		    written = ucs4_to_cns11643l1 (ch, buf, 2);		      \
-		    if (written != __UNKNOWN_10646_CHAR)		      \
-		      used = CNS11643_1_set;				      \
-		  }							      \
+		char tmpbuf[3];						      \
 									      \
-		if (written == __UNKNOWN_10646_CHAR)			      \
+		switch (0)						      \
 		  {							      \
+		  default:						      \
+		    /* Well, see whether we have to change the SO set.  */    \
+									      \
+		    if (used != GB2312_set)				      \
+		      {							      \
+			written = ucs4_to_gb2312 (ch, buf, 2);		      \
+			if (written != __UNKNOWN_10646_CHAR)		      \
+			  {						      \
+			    used = GB2312_set;				      \
+			    break;					      \
+			  }						      \
+		      }							      \
+									      \
+		    if (used != ISO_IR_165_set)				      \
+		      {							      \
+			written = ucs4_to_isoir165 (ch, buf, 2);	      \
+			if (written != __UNKNOWN_10646_CHAR)		      \
+			  {						      \
+			    used = ISO_IR_165_set;			      \
+			    break;					      \
+			  }						      \
+		      }							      \
+									      \
+		    if (used != CNS11643_1_set)				      \
+		      {							      \
+			written = ucs4_to_cns11643l1 (ch, buf, 2);	      \
+			if (written != __UNKNOWN_10646_CHAR)		      \
+			  {						      \
+			    used = CNS11643_1_set;			      \
+			    break;					      \
+			  }						      \
+		      }							      \
+									      \
+		    written = ucs4_to_cns11643 (ch, tmpbuf, 3);		      \
+		    if (written == 3 && tmpbuf[0] != 1 && tmpbuf[0] != 2)     \
+		      {							      \
+			buf[0] = tmpbuf[1];				      \
+			buf[1] = tmpbuf[2];				      \
+			written = 2;					      \
+			/* CNS 11643 plane 3 is part of the old CNS 11643     \
+			   plane 14.					      \
+			   XXX Currently planes 4 to 7 are not supported.  */ \
+			if (tmpbuf[0] == 14				      \
+			    && (tmpbuf[1] < 0x62			      \
+				|| (tmpbuf[1] == 0x62 && tmpbuf[2] <= 0x45))) \
+			  {						      \
+			    used = CNS11643_3_set;			      \
+			    break;					      \
+			  }						      \
+		      }							      \
+									      \
 		    /* Even this does not work.  Error.  */		      \
+		    used = ASCII_set;					      \
+		  }							      \
+		if (used == ASCII_set)					      \
+		  {							      \
 		    STANDARD_ERR_HANDLER (4);				      \
 		  }							      \
 	      }								      \
@@ -488,7 +539,7 @@ enum
 	  {								      \
 	    /* First see whether we announced that we use this		      \
 	       character set.  */					      \
-	    if ((ann & (2 << used)) == 0)				      \
+	    if ((used & SO_mask) != 0 && (ann & SO_ann) != (used << 8))	      \
 	      {								      \
 		const char *escseq;					      \
 									      \
@@ -499,18 +550,39 @@ enum
 		  }							      \
 									      \
 		assert (used >= 1 && used <= 4);			      \
-		escseq = "\e$)A\e$)G\e$*H\e$)E" + (used - 1) * 4;	      \
+		escseq = ")A\0\0)G)E" + (used - 1) * 2;			      \
+		*outptr++ = ESC;					      \
+		*outptr++ = '$';					      \
+		*outptr++ = *escseq++;					      \
+		*outptr++ = *escseq++;					      \
+									      \
+		ann = (ann & ~SO_ann) | (used << 8);			      \
+	      }								      \
+	    else if ((used & SS2_mask) != 0 && (ann & SS2_ann) != (used << 8))\
+	      {								      \
+		const char *escseq;					      \
+									      \
+		assert (used == CNS11643_2_set); /* XXX */		      \
+		escseq = "*H";						      \
+		*outptr++ = ESC;					      \
+		*outptr++ = '$';					      \
 		*outptr++ = *escseq++;					      \
 		*outptr++ = *escseq++;					      \
+									      \
+		ann = (ann & ~SS2_ann) | (used << 8);			      \
+	      }								      \
+	    else if ((used & SS3_mask) != 0 && (ann & SS3_ann) != (used << 8))\
+	      {								      \
+		const char *escseq;					      \
+									      \
+		assert ((used >> 5) >= 3 && (used >> 5) <= 7);		      \
+		escseq = "+I+J+K+L+M" + ((used >> 5) - 3) * 2;		      \
+		*outptr++ = ESC;					      \
+		*outptr++ = '$';					      \
 		*outptr++ = *escseq++;					      \
 		*outptr++ = *escseq++;					      \
 									      \
-		if (used == GB2312_set)					      \
-		  ann = (ann & CNS11643_2_ann) | GB2312_ann;		      \
-		else if (used == CNS11643_1_set)			      \
-		  ann = (ann & CNS11643_2_ann) | CNS11643_1_ann;	      \
-		else							      \
-		  ann |= CNS11643_2_ann;				      \
+		ann = (ann & ~SS3_ann) | (used << 8);			      \
 	      }								      \
 									      \
 	    if (used == CNS11643_2_set)					      \
@@ -523,6 +595,16 @@ enum
 		*outptr++ = SS2_0;					      \
 		*outptr++ = SS2_1;					      \
 	      }								      \
+	    else if (used >= CNS11643_3_set && used <= CNS11643_7_set)	      \
+	      {								      \
+		if (outptr + 2 > outend)				      \
+		  {							      \
+		    result = __GCONV_FULL_OUTPUT;			      \
+		    break;						      \
+		  }							      \
+		*outptr++ = SS3_0;					      \
+		*outptr++ = SS3_1;					      \
+	      }								      \
 	    else							      \
 	      {								      \
 		/* We only have to emit something if currently ASCII is	      \
@@ -555,6 +637,7 @@ enum
 									      \
 	*outptr++ = buf[0];						      \
 	*outptr++ = buf[1];						      \
+	set = used;							      \
       }									      \
 									      \
     /* Now that we wrote the output increment the input pointer.  */	      \
diff --git a/iconvdata/iso-2022-cn.c b/iconvdata/iso-2022-cn.c
index d45ed6b30a..6040e1294f 100644
--- a/iconvdata/iso-2022-cn.c
+++ b/iconvdata/iso-2022-cn.c
@@ -141,15 +141,15 @@ enum
 	     line; we can simply ignore them				      \
 	   - the initial byte of the SS2 sequence.			      \
 	*/								      \
-	if (__builtin_expect (inptr + 1 > inend, 0)			      \
+	if (__builtin_expect (inptr + 2 > inend, 0)			      \
 	    || (inptr[1] == '$'						      \
-		&& (__builtin_expect (inptr + 2 > inend, 0)		      \
+		&& (__builtin_expect (inptr + 3 > inend, 0)		      \
 		    || (inptr[2] == ')'					      \
-			&& __builtin_expect (inptr + 3 > inend, 0))	      \
+			&& __builtin_expect (inptr + 4 > inend, 0))	      \
 		    || (inptr[2] == '*'					      \
-			&& __builtin_expect (inptr + 3 > inend, 0))))	      \
+			&& __builtin_expect (inptr + 4 > inend, 0))))	      \
 	    || (inptr[1] == SS2_1					      \
-		&& __builtin_expect (inptr + 3 > inend, 0)))		      \
+		&& __builtin_expect (inptr + 4 > inend, 0)))		      \
 	  {								      \
 	    result = __GCONV_INCOMPLETE_INPUT;				      \
 	    break;							      \
@@ -313,14 +313,14 @@ enum
 	    else							      \
 	      {								      \
 		/* Well, see whether we have to change the SO set.  */	      \
-		if (set == GB2312_set)					      \
+		if (used == GB2312_set)					      \
 		  written = ucs4_to_cns11643l1 (ch, buf, 2);		      \
 		else							      \
 		  written = ucs4_to_gb2312 (ch, buf, 2);		      \
 									      \
 		if (__builtin_expect (written, 0) != __UNKNOWN_10646_CHAR)    \
 		  /* Oh well, then switch SO.  */			      \
-		  used = GB2312_set + CNS11643_1_set - set;		      \
+		  used = GB2312_set + CNS11643_1_set - used;		      \
 		else							      \
 		  {							      \
 		    /* Even this does not work.  Error.  */		      \
@@ -335,7 +335,7 @@ enum
 	  {								      \
 	    /* First see whether we announced that we use this		      \
 	       character set.  */					      \
-	    if ((ann & (2 << used)) == 0)				      \
+	    if ((ann & (16 << (used >> 3))) == 0)			      \
 	      {								      \
 		const char *escseq;					      \
 									      \
@@ -345,10 +345,10 @@ enum
 		    break;						      \
 		  }							      \
 									      \
-		assert (used >= 1 && used <= 3);			      \
-		escseq = "\e$)A\e$)G\e$*H" + (used - 1) * 4;		      \
-		*outptr++ = *escseq++;					      \
-		*outptr++ = *escseq++;					      \
+		assert ((used >> 3) >= 1 && (used >> 3) <= 3);		      \
+		escseq = ")A)G*H" + ((used >> 3) - 1) * 2;		      \
+		*outptr++ = ESC;					      \
+		*outptr++ = '$';					      \
 		*outptr++ = *escseq++;					      \
 		*outptr++ = *escseq++;					      \
 									      \
@@ -402,6 +402,7 @@ enum
 									      \
 	*outptr++ = buf[0];						      \
 	*outptr++ = buf[1];						      \
+	set = used;							      \
       }									      \
 									      \
     /* Now that we wrote the output increment the input pointer.  */	      \
diff --git a/iconvdata/iso-ir-165.c b/iconvdata/iso-ir-165.c
index cbb4797cee..529f7aba13 100644
--- a/iconvdata/iso-ir-165.c
+++ b/iconvdata/iso-ir-165.c
@@ -546,7 +546,7 @@ const struct gap __isoir165_from_idx[] =
 };
 
 
-const char __isoir165_tab[29852] =
+const char __isoir165_from_tab[29852] =
   "\x2a\x21" "\x2a\x22" "\x2a\x23" "\x21\x67" "\x2a\x25" "\x2a\x26" "\x2a\x27"
   "\x2a\x28" "\x2a\x29" "\x2a\x2a" "\x2a\x2b" "\x2a\x2c" "\x2a\x2d" "\x2a\x2e"
   "\x2a\x2f" "\x2a\x30" "\x2a\x31" "\x2a\x32" "\x2a\x33" "\x2a\x34" "\x2a\x35"
diff --git a/iconvdata/tst-table-from.c b/iconvdata/tst-table-from.c
index 92a562d884..fb4934f0de 100644
--- a/iconvdata/tst-table-from.c
+++ b/iconvdata/tst-table-from.c
@@ -216,7 +216,7 @@ main (int argc, char *argv[])
       exit (1);
     }
 
-  if (ferror (stdin) || ferror (stdout))
+  if (ferror (stdin) || fflush (stdout) || ferror (stdout))
     {
       fprintf (stderr, "I/O error\n");
       exit (1);
diff --git a/iconvdata/tst-table-to.c b/iconvdata/tst-table-to.c
index 329ba4ad0f..f154116e45 100644
--- a/iconvdata/tst-table-to.c
+++ b/iconvdata/tst-table-to.c
@@ -97,7 +97,7 @@ main (int argc, char *argv[])
       exit (1);
     }
 
-  if (ferror (stdin) || ferror (stdout))
+  if (ferror (stdin) || fflush (stdout) || ferror (stdout))
     {
       fprintf (stderr, "I/O error\n");
       exit (1);
diff --git a/iconvdata/unicode.c b/iconvdata/unicode.c
index 52c2c9dbdf..b8ea905de3 100644
--- a/iconvdata/unicode.c
+++ b/iconvdata/unicode.c
@@ -154,6 +154,23 @@ gconv_end (struct __gconv_step *data)
       {									      \
 	STANDARD_ERR_HANDLER (4);					      \
       }									      \
+    else if (__builtin_expect (c >= 0xd800 && c < 0xe000, 0))		      \
+      {									      \
+	/* Surrogate characters in UCS-4 input are not valid.		      \
+	   We must catch this, because the UCS-2 output might be	      \
+	   interpreted as UTF-16 by other programs.  If we let		      \
+	   surrogates pass through, attackers could make a security	      \
+	   hole exploit by synthesizing any desired plane 1-16		      \
+	   character.  */						      \
+	if (! ignore_errors_p ())					      \
+	  {								      \
+	    result = __GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+	inptr += 4;							      \
+	++*irreversible;						      \
+	continue;							      \
+      }									      \
     else								      \
       {									      \
 	put16 (outptr, c);						      \
@@ -179,11 +196,26 @@ gconv_end (struct __gconv_step *data)
     if (swap)								      \
       u1 = bswap_16 (u1);						      \
 									      \
+    if (__builtin_expect (u1 >= 0xd800 && u1 < 0xe000, 0))		      \
+      {									      \
+	/* Surrogate characters in UCS-2 input are not valid.  Reject	      \
+	   them.  (Catching this here is not security relevant.)  */	      \
+	if (! ignore_errors_p ())					      \
+	  {								      \
+	    result = __GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+	inptr += 2;							      \
+	++*irreversible;						      \
+	continue;							      \
+      }									      \
+									      \
     put32 (outptr, u1);							      \
 									      \
     inptr += 2;								      \
     outptr += 4;							      \
   }
+#define LOOP_NEED_FLAGS
 #define EXTRA_LOOP_DECLS \
 	, int swap
 #include <iconv/loop.c>
diff --git a/iconvdata/utf-16.c b/iconvdata/utf-16.c
index 4b7fefaf28..aa0d00c119 100644
--- a/iconvdata/utf-16.c
+++ b/iconvdata/utf-16.c
@@ -109,32 +109,32 @@ gconv_init (struct __gconv_step *step)
   enum variant var = illegal_var;
   int result;
 
-  if (__strcasecmp (step->__from_name, "UTF-16") == 0)
+  if (__strcasecmp (step->__from_name, "UTF-16//") == 0)
     {
       dir = from_utf16;
       var = UTF_16;
     }
-  else if (__strcasecmp (step->__to_name, "UTF-16") == 0)
+  else if (__strcasecmp (step->__to_name, "UTF-16//") == 0)
     {
       dir = to_utf16;
       var = UTF_16;
     }
-  else if (__strcasecmp (step->__from_name, "UTF-16BE") == 0)
+  else if (__strcasecmp (step->__from_name, "UTF-16BE//") == 0)
     {
       dir = from_utf16;
       var = UTF_16BE;
     }
-  else if (__strcasecmp (step->__to_name, "UTF-16BE") == 0)
+  else if (__strcasecmp (step->__to_name, "UTF-16BE//") == 0)
     {
       dir = to_utf16;
       var = UTF_16BE;
     }
-  else if (__strcasecmp (step->__from_name, "UTF-16LE") == 0)
+  else if (__strcasecmp (step->__from_name, "UTF-16LE//") == 0)
     {
       dir = from_utf16;
       var = UTF_16LE;
     }
-  else if (__strcasecmp (step->__to_name, "UTF-16LE") == 0)
+  else if (__strcasecmp (step->__to_name, "UTF-16LE//") == 0)
     {
       dir = to_utf16;
       var = UTF_16LE;
@@ -196,6 +196,22 @@ gconv_end (struct __gconv_step *data)
   {									      \
     uint32_t c = get32 (inptr);						      \
 									      \
+    if (__builtin_expect (c >= 0xd800 && c < 0xe000, 0))		      \
+      {									      \
+	/* Surrogate characters in UCS-4 input are not valid.		      \
+	   We must catch this.  If we let surrogates pass through,	      \
+	   attackers could make a security hole exploit by		      \
+	   synthesizing any desired plane 1-16 character.  */		      \
+	if (! ignore_errors_p ())					      \
+	  {								      \
+	    result = __GCONV_ILLEGAL_INPUT;				      \
+	    break;							      \
+	  }								      \
+	inptr += 4;							      \
+	++*irreversible;						      \
+	continue;							      \
+      }									      \
+									      \
     if (swap)								      \
       {									      \
 	if (__builtin_expect (c, 0) >= 0x10000)				      \