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authorUlrich Drepper <gmail@redhat.com>2011-01-12 20:37:51 -0500
committerUlrich Drepper <gmail@redhat.com>2011-01-12 20:37:51 -0500
commitf57e41a5b8e88186c67ec0410d61a751b274340c (patch)
tree671acca459fbf5385490601e6265fbac7b6c6d48 /stdio-common
parentf257bbd77dfcfdf9fa305e220b295e4ad57f405d (diff)
downloadglibc-f57e41a5b8e88186c67ec0410d61a751b274340c.tar.gz
Fix grouping when rounding increases number of integer digits.
Diffstat (limited to 'stdio-common')
-rw-r--r--stdio-common/Makefile5
-rw-r--r--stdio-common/printf_fp.c23
-rw-r--r--stdio-common/tst-grouping.c83
3 files changed, 102 insertions, 9 deletions
diff --git a/stdio-common/Makefile b/stdio-common/Makefile
index 9cbf14385c..6aabfb6b54 100644
--- a/stdio-common/Makefile
+++ b/stdio-common/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1991-2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+# Copyright (C) 1991-2009, 2011 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
@@ -60,7 +60,7 @@ tests := tstscanf test_rdwr test-popen tstgetln test-fseek \
tst-popen tst-unlockedio tst-fmemopen2 tst-put-error tst-fgets \
tst-fwrite bug16 bug17 tst-swscanf tst-sprintf2 bug18 bug18a \
bug19 bug19a tst-popen2 scanf13 scanf14 scanf15 bug20 bug21 bug22 \
- scanf16 scanf17 tst-setvbuf1
+ scanf16 scanf17 tst-setvbuf1 tst-grouping
test-srcs = tst-unbputc tst-printf
@@ -128,6 +128,7 @@ test-vfprintf-ENV = LOCPATH=$(common-objpfx)localedata
scanf13-ENV = LOCPATH=$(common-objpfx)localedata
bug14-ENV = LOCPATH=$(common-objpfx)localedata
bug15-ENV = LOCPATH=$(common-objpfx)localedata
+tst-grouping-ENV = LOCPATH=$(common-objpfx)localedata
ifneq (,$(filter %REENTRANT, $(defines)))
CPPFLAGS += -D_IO_MTSAFE_IO
diff --git a/stdio-common/printf_fp.c b/stdio-common/printf_fp.c
index b60ddecef0..e9ff1684ce 100644
--- a/stdio-common/printf_fp.c
+++ b/stdio-common/printf_fp.c
@@ -1,5 +1,5 @@
/* Floating point output for `printf'.
- Copyright (C) 1995-2003, 2006, 2007, 2008 Free Software Foundation, Inc.
+ Copyright (C) 1995-2003, 2006-2008, 2011 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
@@ -884,7 +884,9 @@ ___printf_fp (FILE *fp,
/* Guess the number of groups we will make, and thus how
many spaces we need for separator characters. */
ngroups = __guess_grouping (intdig_max, grouping);
- chars_needed += ngroups;
+ /* Allocate one more character in case rounding increases the
+ number of groups. */
+ chars_needed += ngroups + 1;
}
/* Allocate buffer for output. We need two more because while rounding
@@ -1088,9 +1090,16 @@ ___printf_fp (FILE *fp,
--wcp;
if (grouping)
- /* Add in separator characters, overwriting the same buffer. */
- wcp = group_number (wstartp, wcp, intdig_no, grouping, thousands_sepwc,
- ngroups);
+ {
+ /* Rounding might have changed the number of groups. We allocated
+ enough memory but we need here the correct number of groups. */
+ if (intdig_no != intdig_max)
+ ngroups = __guess_grouping (intdig_no, grouping);
+
+ /* Add in separator characters, overwriting the same buffer. */
+ wcp = group_number (wstartp, wcp, intdig_no, grouping, thousands_sepwc,
+ ngroups);
+ }
/* Write the exponent if it is needed. */
if (type != 'f')
@@ -1210,7 +1219,7 @@ ___printf_fp (FILE *fp,
tmpptr = buffer;
if (__builtin_expect (info->i18n, 0))
- {
+ {
#ifdef COMPILE_WPRINTF
wstartp = _i18n_number_rewrite (wstartp, wcp,
wbuffer + wbuffer_to_alloc);
@@ -1224,7 +1233,7 @@ ___printf_fp (FILE *fp,
assert ((uintptr_t) buffer <= (uintptr_t) tmpptr);
assert ((uintptr_t) tmpptr < (uintptr_t) buffer_end);
#endif
- }
+ }
PRINT (tmpptr, wstartp, wide ? wcp - wstartp : cp - tmpptr);
diff --git a/stdio-common/tst-grouping.c b/stdio-common/tst-grouping.c
new file mode 100644
index 0000000000..e8f4b8c4db
--- /dev/null
+++ b/stdio-common/tst-grouping.c
@@ -0,0 +1,83 @@
+/* BZ 12394, test by Bruno Haible. */
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+static int
+do_test (void)
+{
+ char buf1[1000];
+ char buf2[1000];
+ int result = 0;
+
+ if (setlocale (LC_NUMERIC, "de_DE.UTF-8") == NULL)
+ return 1;
+
+ sprintf (buf1, "%'.2f", 999.996);
+ sprintf (buf2, "%'.2f", 1000.004);
+ printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+ if (strcmp (buf1, buf2) != 0)
+ result |= 2;
+
+ sprintf (buf1, "%'.2f", 999999.996);
+ sprintf (buf2, "%'.2f", 1000000.004);
+ printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+ if (strcmp (buf1, buf2) != 0)
+ result |= 2;
+
+ sprintf (buf1, "%'.2f", 999999999.996);
+ sprintf (buf2, "%'.2f", 1000000000.004);
+ printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+ if (strcmp (buf1, buf2) != 0)
+ result |= 2;
+
+ sprintf (buf1, "%'.2f", 999999999999.996);
+ sprintf (buf2, "%'.2f", 1000000000000.004);
+ printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+ if (strcmp (buf1, buf2) != 0)
+ result |= 2;
+
+ sprintf (buf1, "%'.2f", 999999999999999.996);
+ sprintf (buf2, "%'.2f", 1000000000000000.004);
+ printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+ if (strcmp (buf1, buf2) != 0)
+ result |= 2;
+
+ sprintf (buf1, "%'.5g", 999.996);
+ sprintf (buf2, "%'.5g", 1000.004);
+ printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+ if (strcmp (buf1, buf2) != 0)
+ result |= 4;
+
+ sprintf (buf1, "%'.4g", 9999.996);
+ sprintf (buf2, "%'.4g", 10000.004);
+ printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+ if (strcmp (buf1, buf2) != 0)
+ result |= 8;
+
+ sprintf (buf1, "%'.5g", 99999.996);
+ sprintf (buf2, "%'.5g", 100000.004);
+ printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+ if (strcmp (buf1, buf2) != 0)
+ result |= 8;
+
+ sprintf (buf1, "%'.6g", 999999.996);
+ sprintf (buf2, "%'.6g", 1000000.004);
+ printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+ if (strcmp (buf1, buf2) != 0)
+ result |= 8;
+
+ sprintf (buf1, "%'.7g", 9999999.996);
+ sprintf (buf2, "%'.7g", 10000000.004);
+ printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+ if (strcmp (buf1, buf2) != 0)
+ result |= 8;
+
+ return result;
+}
+
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"