From 55ea8790a9fdb6e1320be8e5ad84bca04dbf9a7d Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Tue, 21 Aug 2007 14:43:18 +0000
Subject: [PATCH] [BZ #4896, BZ #4936]

2007-08-21  Ulrich Drepper  <drepper@redhat.com>
	[BZ #4936]
	* iconv/gconv.c (__gconv): If flush was successful, clear rest of
	the state.
	* iconvdata/Makefile: Add rules to build and run bug-iconv5.
	* iconvdata/bug-iconv5.c: New file.

	[BZ #4896]
---
 ChangeLog              |  9 +++++++
 iconv/gconv.c          | 20 +++++++++++-----
 iconvdata/Makefile     |  4 +++-
 iconvdata/bug-iconv5.c | 53 ++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 79 insertions(+), 7 deletions(-)
 create mode 100644 iconvdata/bug-iconv5.c

diff --git a/ChangeLog b/ChangeLog
index 510f60fe47..c884b4fd58 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,14 @@
+2007-08-21  Ulrich Drepper  <drepper@redhat.com>
+
+	[BZ #4936]
+	* iconv/gconv.c (__gconv): If flush was successful, clear rest of
+	the state.
+	* iconvdata/Makefile: Add rules to build and run bug-iconv5.
+	* iconvdata/bug-iconv5.c: New file.
+
 2007-08-04  Carlos O'Donell  <carlos@systemhalted.org>
 
+	[BZ #4896]
 	* elf/elf.h: Define R_PARISC_PLABEL21L, R_PARISC_PLABEL14R,
 	R_PARISC_GNU_VTENTRY, R_PARISC_GNU_VTINHERIT, R_PARISC_TLS_GD21L,
 	R_PARISC_TLS_GD14R, R_PARISC_TLS_GDCALL, R_PARISC_TLS_LDM21L,
diff --git a/iconv/gconv.c b/iconv/gconv.c
index cd43d3d6fb..1b64455537 100644
--- a/iconv/gconv.c
+++ b/iconv/gconv.c
@@ -1,6 +1,6 @@
 /* Convert characters in input buffer using conversion descriptor to
    output buffer.
-   Copyright (C) 1997-2001, 2005 Free Software Foundation, Inc.
+   Copyright (C) 1997-2001, 2005, 2007 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -55,11 +55,19 @@ __gconv (__gconv_t cd, const unsigned char **inbuf,
 #endif
 
   if (inbuf == NULL || *inbuf == NULL)
-    /* We just flush.  */
-    result = DL_CALL_FCT (fct,
-			  (cd->__steps, cd->__data, NULL, NULL, NULL,
-			   irreversible,
-			   cd->__data[last_step].__outbuf == NULL ? 2 : 1, 0));
+    {
+      /* We just flush.  */
+      result = DL_CALL_FCT (fct,
+			    (cd->__steps, cd->__data, NULL, NULL, NULL,
+			     irreversible,
+			     cd->__data[last_step].__outbuf == NULL ? 2 : 1,
+			     0));
+
+      /* If the flush was successful clear the rest of the state.  */
+      if (result == __GCONV_OK)
+	for (size_t cnt = 0; cnt <= last_step; ++cnt)
+	  cd->__data[cnt].__invocation_counter = 0;
+    }
   else
     {
       const unsigned char *last_start;
diff --git a/iconvdata/Makefile b/iconvdata/Makefile
index 8b49367bd4..26bf61ed5e 100644
--- a/iconvdata/Makefile
+++ b/iconvdata/Makefile
@@ -66,7 +66,7 @@ include ../Makeconfig
 
 ifeq (yes,$(build-shared))
 tests = bug-iconv1 bug-iconv2 tst-loading tst-e2big tst-iconv4 bug-iconv4 \
-	tst-iconv6
+	tst-iconv6 bug-iconv5
 ifeq ($(have-thread-library),yes)
 tests += bug-iconv3
 endif
@@ -354,6 +354,8 @@ $(objpfx)bug-iconv2.out: $(objpfx)gconv-modules \
 $(objpfx)bug-iconv3: $(libdl)
 $(objpfx)bug-iconv3.out: $(objpfx)gconv-modules \
 			 $(addprefix $(objpfx),$(modules.so))
+$(objpfx)bug-iconv5.out: $(objpfx)gconv-modules \
+			 $(addprefix $(objpfx),$(modules.so))
 $(objpfx)tst-loading.out: $(objpfx)gconv-modules \
 			  $(addprefix $(objpfx),$(modules.so))
 $(objpfx)tst-iconv4.out: $(objpfx)gconv-modules \
diff --git a/iconvdata/bug-iconv5.c b/iconvdata/bug-iconv5.c
new file mode 100644
index 0000000000..1b9f50f58a
--- /dev/null
+++ b/iconvdata/bug-iconv5.c
@@ -0,0 +1,53 @@
+#include <iconv.h>
+#include <stdint.h>
+#include <stdio.h>
+
+
+static int
+do_test (void)
+{
+  iconv_t cd = iconv_open ("utf-8", "unicode");
+  if (cd == (iconv_t) -1)
+    {
+      puts ("cannot open iconv module");
+      return 1;
+    }
+
+  static const uint16_t us[] = { 0xfeff, 0x0041, 0x0042, 0x0043 };
+  char buf[100];
+
+  char *inbuf;
+  size_t inlen;
+  char *outbuf;
+  size_t outlen;
+  size_t n;
+
+  inbuf = (char *) us;
+  inlen = sizeof (us);
+  outbuf = buf;
+  outlen = sizeof (buf);
+  n = iconv (cd, &inbuf, &inlen, &outbuf, &outlen);
+  if (n == (size_t) -1 || inlen != 0 || outlen != sizeof (buf) - 3)
+    {
+      puts ("first conversion failed");
+      return 1;
+    }
+
+  iconv (cd, NULL, NULL, NULL, NULL);
+
+  inbuf = (char *) us;
+  inlen = sizeof (us);
+  outbuf = buf;
+  outlen = sizeof (buf);
+  n = iconv (cd, &inbuf, &inlen, &outbuf, &outlen);
+  if (n == (size_t) -1 || inlen != 0 || outlen != sizeof (buf) - 3)
+    {
+      puts ("second conversion failed");
+      return 1;
+    }
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"