blob: ae940069a272211871dbe5c3a2d52a62cab9746c
| 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
| 3 | * Utility routines. |
| 4 | * |
| 5 | * Copyright (C) 2015 Denys Vlasenko |
| 6 | * |
| 7 | * Licensed under GPLv2, see file LICENSE in this source tree. |
| 8 | */ |
| 9 | //kbuild:lib-y += auto_string.o |
| 10 | |
| 11 | #include "libbb.h" |
| 12 | |
| 13 | char* FAST_FUNC auto_string(char *str) |
| 14 | { |
| 15 | static char *saved[4]; |
| 16 | static uint8_t cur_saved; /* = 0 */ |
| 17 | |
| 18 | free(saved[cur_saved]); |
| 19 | saved[cur_saved] = str; |
| 20 | cur_saved = (cur_saved + 1) & (ARRAY_SIZE(saved)-1); |
| 21 | |
| 22 | return str; |
| 23 | } |
| 24 |