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bc: do not allocate line editing state until needed

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function                                             old     new   delta
xc_read_line                                         324     353     +29
free_line_input_t                                     34      39      +5
xc_vm_init                                           656     640     -16
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(add/remove: 0/0 grow/shrink: 2/1 up/down: 34/-16)             Total: 18 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2020-12-21 21:36:58 +01:00
parent e4202df091
commit 00eb23b47a
5 changed files with 35 additions and 30 deletions
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4
include/libbb.h
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@ -1906,7 +1906,11 @@ enum {
FOR_SHELL = DO_HISTORY | TAB_COMPLETION | USERNAME_COMPLETION,
};
line_input_t *new_line_input_t(int flags) FAST_FUNC;
#if ENABLE_FEATURE_EDITING_SAVEHISTORY
void free_line_input_t(line_input_t *n) FAST_FUNC;
#else
# define free_line_input_t(n) free(n)
#endif
/*
* maxsize must be >= 2.
* Returns: