diff options
Diffstat (limited to 'stdio-common/printf_fp.c')
| -rw-r--r-- | stdio-common/printf_fp.c | 23 |
1 files changed, 16 insertions, 7 deletions
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); |