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Reject use of ucol_strcollUTF8() before ICU 53

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Various bugs can cause crashes, so don't use that function before ICU
53.  It will fall back to the code path used for other encodings.

Since we now tie the function availability to an ICU version, we don't
need the configure test anymore.  That also resolves the issue that the
test result was previously hardcoded for Windows.

researched by Daniel Verite <daniel@manitou-mail.org>, Peter Geoghegan
<pg@bowt.ie>, Tom Lane <tgl@sss.pgh.pa.us>

Discussion: https://www.postgresql.org/message-id/flat/f1438ec6-22aa-4029-9a3b-26f79d330e72%40manitou-mail.org
This commit is contained in:
Peter Eisentraut 2017-08-09 20:34:51 -04:00
parent b83e54564a
commit d6391b03b3
5 changed files with 13 additions and 60 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
configure vendored
View File

@ -13923,44 +13923,6 @@ fi
# ucol_strcollUTF8() appeared in ICU 50, so check if we have it.
# ICU functions are macros, so we need to do this the long way.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ucol_strcollUTF8" >&5
$as_echo_n "checking for ucol_strcollUTF8... " >&6; }
if ${pgac_cv_func_ucol_strcollUTF8+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_save_LIBS=$LIBS
LIBS="$ICU_LIBS $LIBS"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <unicode/ucol.h>
int
main ()
{
ucol_strcollUTF8(NULL, NULL, 0, NULL, 0, NULL);
;
return 0;
}
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
pgac_cv_func_ucol_strcollUTF8=yes
else
pgac_cv_func_ucol_strcollUTF8=no
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
LIBS=$ac_save_LIBS
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $pgac_cv_func_ucol_strcollUTF8" >&5
$as_echo "$pgac_cv_func_ucol_strcollUTF8" >&6; }
if test "$pgac_cv_func_ucol_strcollUTF8" = yes ; then
$as_echo "#define HAVE_UCOL_STRCOLLUTF8 1" >>confdefs.h
fi
CPPFLAGS=$ac_save_CPPFLAGS
fi

16
configure.in
View File

@ -1662,22 +1662,6 @@ if test "$with_icu" = yes; then
AC_CHECK_HEADER(unicode/ucol.h, [],
[AC_MSG_ERROR([header file <unicode/ucol.h> is required for ICU])])
# ucol_strcollUTF8() appeared in ICU 50, so check if we have it.
# ICU functions are macros, so we need to do this the long way.
AC_CACHE_CHECK([for ucol_strcollUTF8], [pgac_cv_func_ucol_strcollUTF8],
[ac_save_LIBS=$LIBS
LIBS="$ICU_LIBS $LIBS"
AC_LINK_IFELSE([AC_LANG_PROGRAM(
[#include <unicode/ucol.h>
],
[ucol_strcollUTF8(NULL, NULL, 0, NULL, 0, NULL);])],
[pgac_cv_func_ucol_strcollUTF8=yes],
[pgac_cv_func_ucol_strcollUTF8=no])
LIBS=$ac_save_LIBS])
if test "$pgac_cv_func_ucol_strcollUTF8" = yes ; then
AC_DEFINE([HAVE_UCOL_STRCOLLUTF8], 1, [Define to 1 if you have the `ucol_strcollUTF8' function.])
fi
CPPFLAGS=$ac_save_CPPFLAGS
fi

3
src/include/pg_config.h.in
View File

@ -606,9 +606,6 @@
/* Define to 1 if you have the external array `tzname'. */
#undef HAVE_TZNAME
/* Define to 1 if you have the `ucol_strcollUTF8' function. */
#undef HAVE_UCOL_STRCOLLUTF8
/* Define to 1 if you have the <ucred.h> header file. */
#undef HAVE_UCRED_H

3
src/include/pg_config.h.win32
View File

@ -457,9 +457,6 @@
/* Define to 1 if you have the external array `tzname'. */
/* #undef HAVE_TZNAME */
/* Define to 1 if you have the `ucol_strcollUTF8' function. */
#define HAVE_UCOL_STRCOLLUTF8 1
/* Define to 1 if the system has the type `uint64'. */
/* #undef HAVE_UINT64 */

13
src/include/utils/pg_locale.h
View File

@ -21,6 +21,19 @@
#include "utils/guc.h"
#ifdef USE_ICU
/*
* ucol_strcollUTF8() was introduced in ICU 50, but it is buggy before ICU 53.
* (see
* <https://www.postgresql.org/message-id/flat/f1438ec6-22aa-4029-9a3b-26f79d330e72%40manitou-mail.org>)
*/
#if U_ICU_VERSION_MAJOR_NUM >= 53
#define HAVE_UCOL_STRCOLLUTF8 1
#else
#undef HAVE_UCOL_STRCOLLUTF8
#endif
#endif
/* GUC settings */
extern char *locale_messages;