diff options
Diffstat (limited to 'libgfortran')
| -rw-r--r-- | libgfortran/ChangeLog | 6 | ||||
| -rw-r--r-- | libgfortran/io/write.c | 19 |
2 files changed, 9 insertions, 16 deletions
diff --git a/libgfortran/ChangeLog b/libgfortran/ChangeLog index 1b6a6bd..ac234b5 100644 --- a/libgfortran/ChangeLog +++ b/libgfortran/ChangeLog @@ -1,3 +1,9 @@ +2007-07-01 Jerry DeLisle <jvdelisle@gcc.gnu.org> + + PR libgfortran/32554 + * io/write.c (output_float): Set edigits to a fixed size, avoiding + variation in field width calculation and eliminate buffer overrun. + 2007-07-01 Janne Blomqvist <jb@gcc.gnu.org> * runtime/memory.c (internal_realloc): Use index_type for size diff --git a/libgfortran/io/write.c b/libgfortran/io/write.c index f156d19..766d268 100644 --- a/libgfortran/io/write.c +++ b/libgfortran/io/write.c @@ -466,7 +466,6 @@ output_float (st_parameter_dt *dtp, const fnode *f, GFC_REAL_LARGEST value) int nblanks; int i; sign_t sign; - double abslog; ft = f->format; w = f->u.real.w; @@ -495,21 +494,9 @@ output_float (st_parameter_dt *dtp, const fnode *f, GFC_REAL_LARGEST value) value = value + 0.5; } - /* Printf always prints at least two exponent digits. */ - if (value == 0) - edigits = 2; - else - { -#if defined(HAVE_GFC_REAL_10) || defined(HAVE_GFC_REAL_16) - abslog = fabs((double) log10l(value)); -#else - abslog = fabs(log10(value)); -#endif - if (abslog < 100) - edigits = 2; - else - edigits = 1 + (int) log10(abslog); - } + /* printf pads blanks for us on the exponent so we just need it big enough + to handle the largest number of exponent digits expected. */ + edigits=4; if (ft == FMT_F || ft == FMT_EN || ((ft == FMT_D || ft == FMT_E) && dtp->u.p.scale_factor != 0)) |