diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/zstr.c | 14 |
1 files changed, 5 insertions, 9 deletions
@@ -70,15 +70,11 @@ zstr(z_t a, char *b, size_t n) } if (!n) { - /* This is not the most efficient way to handle this. It should - * be faster to allocate buffers that sprintint_fix and - * sprintint_min print to, and then allocate `b` and copy the - * buffers in reverse order into `b`. However, that is an overly - * complicated solution. You probably already know the maximum - * length or do not care about performance. Another disadvantage - * with calculating the length before-hand, means that it is not - * possible to reallocate `b` if it is too small. */ - n = zstr_length(a, 10); + /* Calculate a value that is at least the number of + * digits required to store the string. The overshoot + * is not too signicant. */ + n = (20 * BITS_PER_CHAR / 64 + (BITS_PER_CHAR == 8)) * a->used; + /* Note, depends on a ≠ as ensure above. */ } if (unlikely(!b) && unlikely(!(b = libzahl_temp_allocation = malloc(n + 1)))) |