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Add test for bug 29530

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This tests for a bug that was introduced in commit edc1686af0 ("vfprintf:
Reuse work_buffer in group_number") and fixed as a side effect of commit
6caddd34bd ("Remove most vfprintf width/precision-dependent allocations
(bug 14231, bug 26211).").

(cherry picked from commit ca6466e8be)
This commit is contained in:
Andreas Schwab 2022-08-29 15:05:40 +02:00 committed by Florian Weimer
parent bbb0692779
commit 8b915921fb
2 changed files with 43 additions and 1 deletions
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5
stdio-common/Makefile
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@ -64,7 +64,9 @@ tests := tstscanf test_rdwr test-popen tstgetln test-fseek \
tst-scanf-round \
tst-renameat2 \
tst-printf-bz25691 \
tst-vfprintf-width-prec-alloc
tst-vfprintf-width-prec-alloc \
tst-grouping2 \
# tests
test-srcs = tst-unbputc tst-printf tst-printfsz-islongdouble
@ -91,6 +93,7 @@ $(objpfx)bug14.out: $(gen-locales)
$(objpfx)scanf13.out: $(gen-locales)
$(objpfx)test-vfprintf.out: $(gen-locales)
$(objpfx)tst-grouping.out: $(gen-locales)
$(objpfx)tst-grouping2.out: $(gen-locales)
$(objpfx)tst-sprintf.out: $(gen-locales)
$(objpfx)tst-sscanf.out: $(gen-locales)
$(objpfx)tst-swprintf.out: $(gen-locales)

39
stdio-common/tst-grouping2.c Normal file
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@ -0,0 +1,39 @@
/* Test printf with grouping and large width (bug 29530)
Copyright (C) 2022 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
<https://www.gnu.org/licenses/>. */
#include <locale.h>
#include <stdio.h>
#include <support/check.h>
#include <support/support.h>
static int
do_test (void)
{
const int field_width = 1000;
char buf[field_width + 1];
xsetlocale (LC_NUMERIC, "de_DE.UTF-8");
/* This used to crash in group_number. */
TEST_COMPARE (sprintf (buf, "%'*d", field_width, 1000), field_width);
TEST_COMPARE_STRING (buf + field_width - 6, " 1.000");
return 0;
}
#include <support/test-driver.c>