diff options
Diffstat (limited to 'stdio-common')
| -rw-r--r-- | stdio-common/printf_fp.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/stdio-common/printf_fp.c b/stdio-common/printf_fp.c index 67161be586..47052d7797 100644 --- a/stdio-common/printf_fp.c +++ b/stdio-common/printf_fp.c @@ -835,9 +835,12 @@ __printf_fp (FILE *fp, type = 'f'; intdig_max = expsign == 0 ? exponent + 1 : 0; fracdig_max = dig_max - intdig_max; - /* We need space for the significant digits and perhaps for - leading zeros when < 1.0. Pessimistic guess: dig_max. */ - chars_needed = dig_max + dig_max + 1; + /* We need space for the significant digits and perhaps + for leading zeros when < 1.0. The number of leading + zeros can be as many as would be required for + exponential notation with a negative two-digit + exponent, which is 4. */ + chars_needed = dig_max + 1 + 4; } fracdig_min = info->alt ? fracdig_max : 0; significant = 0; /* We count significant digits. */ |