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glibc.8240
iconv-reset-input-buffer.patch
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File iconv-reset-input-buffer.patch of Package glibc.8240
Fix iconv buffer handling with IGNORE error handler (bug #18830) [BZ #18830] * iconv/skeleton.c (FUNCTION_NAME): Use RESET_INPUT_BUFFER only if no irreversible characters occurred. * iconv/gconv_simple.c (internal_ucs4_loop) (internal_ucs4_loop_unaligned, internal_ucs4_loop_single) (ucs4_internal_loop, ucs4_internal_loop_unaligned) (ucs4_internal_loop_single, internal_ucs4le_loop) (internal_ucs4le_loop_unaligned, internal_ucs4le_loop_single) (ucs4le_internal_loop, ucs4le_internal_loop_unaligned) (ucs4le_internal_loop_single): Add const to outend. * iconv/Makefile (tests): Add tst-iconv6. * iconv/tst-iconv6.c: New file. Index: glibc-2.22/iconv/Makefile =================================================================== --- glibc-2.22.orig/iconv/Makefile +++ glibc-2.22/iconv/Makefile @@ -42,7 +42,7 @@ CFLAGS-charmap.c = -DCHARMAP_PATH='"$(i1 CFLAGS-linereader.c = -DNO_TRANSLITERATION CFLAGS-simple-hash.c = -I../locale -tests = tst-iconv1 tst-iconv2 tst-iconv3 tst-iconv4 tst-iconv5 +tests = tst-iconv1 tst-iconv2 tst-iconv3 tst-iconv4 tst-iconv5 tst-iconv6 others = iconv_prog iconvconfig install-others-programs = $(inst_bindir)/iconv Index: glibc-2.22/iconv/gconv_simple.c =================================================================== --- glibc-2.22.orig/iconv/gconv_simple.c +++ glibc-2.22/iconv/gconv_simple.c @@ -76,7 +76,7 @@ __attribute ((always_inline)) internal_ucs4_loop (struct __gconv_step *step, struct __gconv_step_data *step_data, const unsigned char **inptrp, const unsigned char *inend, - unsigned char **outptrp, unsigned char *outend, + unsigned char **outptrp, const unsigned char *outend, size_t *irreversible) { const unsigned char *inptr = *inptrp; @@ -120,7 +120,8 @@ internal_ucs4_loop_unaligned (struct __g struct __gconv_step_data *step_data, const unsigned char **inptrp, const unsigned char *inend, - unsigned char **outptrp, unsigned char *outend, + unsigned char **outptrp, + const unsigned char *outend, size_t *irreversible) { const unsigned char *inptr = *inptrp; @@ -169,7 +170,8 @@ internal_ucs4_loop_single (struct __gcon struct __gconv_step_data *step_data, const unsigned char **inptrp, const unsigned char *inend, - unsigned char **outptrp, unsigned char *outend, + unsigned char **outptrp, + const unsigned char *outend, size_t *irreversible) { mbstate_t *state = step_data->__statep; @@ -231,7 +233,7 @@ __attribute ((always_inline)) ucs4_internal_loop (struct __gconv_step *step, struct __gconv_step_data *step_data, const unsigned char **inptrp, const unsigned char *inend, - unsigned char **outptrp, unsigned char *outend, + unsigned char **outptrp, const unsigned char *outend, size_t *irreversible) { int flags = step_data->__flags; @@ -298,7 +300,8 @@ ucs4_internal_loop_unaligned (struct __g struct __gconv_step_data *step_data, const unsigned char **inptrp, const unsigned char *inend, - unsigned char **outptrp, unsigned char *outend, + unsigned char **outptrp, + const unsigned char *outend, size_t *irreversible) { int flags = step_data->__flags; @@ -368,7 +371,8 @@ ucs4_internal_loop_single (struct __gcon struct __gconv_step_data *step_data, const unsigned char **inptrp, const unsigned char *inend, - unsigned char **outptrp, unsigned char *outend, + unsigned char **outptrp, + const unsigned char *outend, size_t *irreversible) { mbstate_t *state = step_data->__statep; @@ -443,7 +447,7 @@ __attribute ((always_inline)) internal_ucs4le_loop (struct __gconv_step *step, struct __gconv_step_data *step_data, const unsigned char **inptrp, const unsigned char *inend, - unsigned char **outptrp, unsigned char *outend, + unsigned char **outptrp, const unsigned char *outend, size_t *irreversible) { const unsigned char *inptr = *inptrp; @@ -488,7 +492,8 @@ internal_ucs4le_loop_unaligned (struct _ struct __gconv_step_data *step_data, const unsigned char **inptrp, const unsigned char *inend, - unsigned char **outptrp, unsigned char *outend, + unsigned char **outptrp, + const unsigned char *outend, size_t *irreversible) { const unsigned char *inptr = *inptrp; @@ -540,7 +545,8 @@ internal_ucs4le_loop_single (struct __gc struct __gconv_step_data *step_data, const unsigned char **inptrp, const unsigned char *inend, - unsigned char **outptrp, unsigned char *outend, + unsigned char **outptrp, + const unsigned char *outend, size_t *irreversible) { mbstate_t *state = step_data->__statep; @@ -601,7 +607,7 @@ __attribute ((always_inline)) ucs4le_internal_loop (struct __gconv_step *step, struct __gconv_step_data *step_data, const unsigned char **inptrp, const unsigned char *inend, - unsigned char **outptrp, unsigned char *outend, + unsigned char **outptrp, const unsigned char *outend, size_t *irreversible) { int flags = step_data->__flags; @@ -669,7 +675,8 @@ ucs4le_internal_loop_unaligned (struct _ struct __gconv_step_data *step_data, const unsigned char **inptrp, const unsigned char *inend, - unsigned char **outptrp, unsigned char *outend, + unsigned char **outptrp, + const unsigned char *outend, size_t *irreversible) { int flags = step_data->__flags; @@ -743,7 +750,8 @@ ucs4le_internal_loop_single (struct __gc struct __gconv_step_data *step_data, const unsigned char **inptrp, const unsigned char *inend, - unsigned char **outptrp, unsigned char *outend, + unsigned char **outptrp, + const unsigned char *outend, size_t *irreversible) { mbstate_t *state = step_data->__statep; Index: glibc-2.22/iconv/skeleton.c =================================================================== --- glibc-2.22.orig/iconv/skeleton.c +++ glibc-2.22/iconv/skeleton.c @@ -597,6 +597,10 @@ FUNCTION_NAME (struct __gconv_step *step inptr = *inptrp; /* The outbuf buffer is empty. */ outstart = outbuf; +#ifdef RESET_INPUT_BUFFER + size_t loop_irreversible + = lirreversible + (irreversible ? *irreversible : 0); +#endif #ifdef SAVE_RESET_STATE SAVE_RESET_STATE (1); @@ -671,8 +675,16 @@ FUNCTION_NAME (struct __gconv_step *step if (__glibc_unlikely (outerr != outbuf)) { #ifdef RESET_INPUT_BUFFER - RESET_INPUT_BUFFER; -#else + if (loop_irreversible + == lirreversible + (irreversible ? *irreversible : 0)) + { + /* RESET_INPUT_BUFFER can only work if there + were no irreversible characters during the + last loop. */ + RESET_INPUT_BUFFER; + goto done_reset; + } +#endif /* We have a problem in one of the functions below. Undo the conversion upto the error point. */ size_t nstatus; @@ -682,9 +694,9 @@ FUNCTION_NAME (struct __gconv_step *step outbuf = outstart; /* Restore the state. */ -# ifdef SAVE_RESET_STATE +#ifdef SAVE_RESET_STATE SAVE_RESET_STATE (0); -# endif +#endif if (__glibc_likely (!unaligned)) { @@ -701,7 +713,7 @@ FUNCTION_NAME (struct __gconv_step *step lirreversiblep EXTRA_LOOP_ARGS); } -# if POSSIBLY_UNALIGNED +#if POSSIBLY_UNALIGNED else { if (FROM_DIRECTION) @@ -720,7 +732,7 @@ FUNCTION_NAME (struct __gconv_step *step lirreversiblep EXTRA_LOOP_ARGS); } -# endif +#endif /* We must run out of output buffer space in this rerun. */ @@ -731,9 +743,11 @@ FUNCTION_NAME (struct __gconv_step *step the invocation counter. */ if (__glibc_unlikely (outbuf == outstart)) --data->__invocation_counter; -#endif /* reset input buffer */ } +#ifdef RESET_INPUT_BUFFER + done_reset: +#endif /* Change the status. */ status = result; } Index: glibc-2.22/iconv/tst-iconv6.c =================================================================== --- /dev/null +++ glibc-2.22/iconv/tst-iconv6.c @@ -0,0 +1,68 @@ +/* Test iconv buffer handling with the IGNORE error handler. + Copyright (C) 2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +/* Derived from BZ #18830 */ +#include <errno.h> +#include <iconv.h> +#include <stdio.h> + + +static int +do_test (void) +{ + iconv_t cd = iconv_open ("ASCII//IGNORE", "ASCII"); + if (cd == (iconv_t) -1) + { + puts ("iconv_open failed"); + return 1; + } + + char input[5 + 3] = { 0, 0, 0, 0, 0, '1', '\200', '2' }; + char *inptr = input; + size_t insize = sizeof (input); + char output[5]; + char *outptr = output; + size_t outsize = sizeof (output); + + size_t ret = iconv (cd, &inptr, &insize, &outptr, &outsize); + if (ret != (size_t) -1) + { + puts ("iconv succeeded"); + return 1; + } + if (errno != E2BIG) + { + puts ("iconv did not set errno to E2BIG"); + return 1; + } + if (inptr != input + sizeof (output) - outsize) + { + printf ("iconv consumed %td characters\n", inptr - input); + return 1; + } + + if (iconv_close (cd) == -1) + { + puts ("iconv_close failed"); + return 1; + } + return 0; +} + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c"
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