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patch 8.2.5046: vim_regsub() can overwrite the destination

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Problem:    vim_regsub() can overwrite the destination.
Solution:   Pass the destination length, give an error when it doesn't fit.
This commit is contained in:
Bram Moolenaar
2022-05-30 20:58:55 +01:00
parent 10db31f949
commit 4aaf3e7f4d
6 changed files with 111 additions and 37 deletions
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4
src/proto/regexp.pro
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@@ -6,8 +6,8 @@ char_u *skip_regexp_ex(char_u *startp, int dirc, int magic, char_u **newp, int *
reg_extmatch_T *ref_extmatch(reg_extmatch_T *em);
void unref_extmatch(reg_extmatch_T *em);
char_u *regtilde(char_u *source, int magic);
int vim_regsub(regmatch_T *rmp, char_u *source, typval_T *expr, char_u *dest, int copy, int magic, int backslash);
int vim_regsub_multi(regmmatch_T *rmp, linenr_T lnum, char_u *source, char_u *dest, int copy, int magic, int backslash);
int vim_regsub(regmatch_T *rmp, char_u *source, typval_T *expr, char_u *dest, int destlen, int flags);
int vim_regsub_multi(regmmatch_T *rmp, linenr_T lnum, char_u *source, char_u *dest, int destlen, int flags);
char_u *reg_submatch(int no);
list_T *reg_submatch_list(int no);
int vim_regcomp_had_eol(void);