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annotate src/proto/mbyte.pro @ 33815:08f9e1eac4cf v9.0.2123

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patch 9.0.2123: Problem with initializing the length of range() lists Commit: https://github.com/vim/vim/commit/df63da98d8dc284b1c76cfe1b17fa0acbd6094d8 Author: Christian Brabandt <cb@256bit.org> Date: Thu Nov 23 20:14:28 2023 +0100 patch 9.0.2123: Problem with initializing the length of range() lists Problem: Problem with initializing the length of range() lists Solution: Set length explicitly when it shouldn't contain any items range() may cause a wrong calculation of list length, which may later then cause a segfault in list_find(). This is usually not a problem, because range_list_materialize() calculates the length, when it materializes the list. In addition, in list_find() when the length of the range was wrongly initialized, it may seem to be valid, so the check for list index out-of-bounds will not be true, because it is called before the list is actually materialized. And so we may eventually try to access a null pointer, causing a segfault. So this patch does 3 things: - In f_range(), when we know that the list should be empty, explicitly set the list->lv_len value to zero. This should happen, when start is larger than end (in case the stride is positive) or end is larger than start when the stride is negative. This should fix the underlying issue properly. However, - as a safety measure, let's check that the requested index is not out of range one more time, after the list has been materialized and return NULL in case it suddenly is. - add a few more tests to verify the behaviour. fixes: #13557 closes: #13563 Co-authored-by: Tim Pope <tpope@github.com> Signed-off-by: Christian Brabandt <cb@256bit.org>
author Christian Brabandt <cb@256bit.org>
date Thu, 23 Nov 2023 20:30:07 +0100
parents 95db67c7b754
children 97b5457962ed
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3fc0f57ecb91 updated for version 7.0001
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diff changeset
1 /* mbyte.c */
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2 int enc_canon_props(char_u *name);
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3 char *mb_init(void);
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4 int bomb_size(void);
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5 void remove_bom(char_u *s);
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6 int mb_get_class(char_u *p);
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7 int mb_get_class_buf(char_u *p, buf_T *buf);
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8 int dbcs_class(unsigned lead, unsigned trail);
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9 int latin_char2len(int c);
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10 int latin_char2bytes(int c, char_u *buf);
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11 int latin_ptr2len(char_u *p);
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12 int latin_ptr2len_len(char_u *p, int size);
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13 int utf_uint2cells(UINT32_T c);
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14 int utf_char2cells(int c);
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15 int latin_ptr2cells(char_u *p);
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16 int utf_ptr2cells(char_u *p);
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17 int dbcs_ptr2cells(char_u *p);
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18 int latin_ptr2cells_len(char_u *p, int size);
21b0a39d13ed commit https://github.com/vim/vim/commit/ef26954a35207c3f17d6ed35d9a40c918d974892
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19 int latin_char2cells(int c);
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20 int mb_string2cells(char_u *p, int len);
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21 int latin_off2cells(unsigned off, unsigned max_off);
21b0a39d13ed commit https://github.com/vim/vim/commit/ef26954a35207c3f17d6ed35d9a40c918d974892
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22 int dbcs_off2cells(unsigned off, unsigned max_off);
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23 int utf_off2cells(unsigned off, unsigned max_off);
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24 int latin_ptr2char(char_u *p);
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25 int utf_ptr2char(char_u *p);
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26 int mb_ptr2char_adv(char_u **pp);
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27 int mb_cptr2char_adv(char_u **pp);
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28 int utf_composinglike(char_u *p1, char_u *p2);
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29 int utfc_ptr2char(char_u *p, int *pcc);
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30 int utfc_ptr2char_len(char_u *p, int *pcc, int maxlen);
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31 int utfc_char2bytes(int off, char_u *buf);
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32 int utf_ptr2len(char_u *p);
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33 int utf_byte2len(int b);
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34 int utf_ptr2len_len(char_u *p, int size);
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35 int utfc_ptr2len(char_u *p);
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36 int utfc_ptr2len_len(char_u *p, int size);
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37 int utf_char2len(int c);
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38 int utf_char2bytes(int c, char_u *buf);
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39 int utf_iscomposing_uint(UINT32_T c);
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40 int utf_iscomposing(int c);
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41 int utf_printable(int c);
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42 int utf_class(int c);
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43 int utf_class_buf(int c, buf_T *buf);
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44 int utf_ambiguous_width(int c);
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45 int utf_fold(int a);
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46 int utf_toupper(int a);
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47 int utf_islower(int a);
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48 int utf_tolower(int a);
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49 int utf_isupper(int a);
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50 int mb_strnicmp(char_u *s1, char_u *s2, size_t nn);
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51 void show_utf8(void);
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52 int latin_head_off(char_u *base, char_u *p);
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53 int dbcs_screen_head_off(char_u *base, char_u *p);
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54 int utf_head_off(char_u *base, char_u *p);
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55 int utf_eat_space(int cc);
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56 int utf_allow_break_before(int cc);
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57 int utf_allow_break(int cc, int ncc);
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58 void mb_copy_char(char_u **fp, char_u **tp);
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59 int mb_off_next(char_u *base, char_u *p);
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60 int mb_tail_off(char_u *base, char_u *p);
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61 void utf_find_illegal(void);
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62 int utf_valid_string(char_u *s, char_u *end);
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63 int dbcs_screen_tail_off(char_u *base, char_u *p);
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64 void mb_adjust_cursor(void);
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65 void mb_adjustpos(buf_T *buf, pos_T *lp);
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66 char_u *mb_prevptr(char_u *line, char_u *p);
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67 int mb_charlen(char_u *str);
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68 int mb_charlen_len(char_u *str, int len);
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69 char_u *mb_unescape(char_u **pp);
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70 int mb_lefthalve(int row, int col);
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71 int mb_fix_col(int col, int row);
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72 char_u *enc_skip(char_u *p);
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73 char_u *enc_canonize(char_u *enc);
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74 char_u *enc_locale_env(char *locale);
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75 char_u *enc_locale(void);
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76 int encname2codepage(char_u *name);
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77 void *my_iconv_open(char_u *to, char_u *from);
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78 int iconv_enabled(int verbose);
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79 void iconv_end(void);
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80 void f_getimstatus(typval_T *argvars, typval_T *rettv);
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81 void f_iconv(typval_T *argvars, typval_T *rettv);
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82 int convert_setup(vimconv_T *vcp, char_u *from, char_u *to);
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83 int convert_setup_ext(vimconv_T *vcp, char_u *from, int from_unicode_is_utf8, char_u *to, int to_unicode_is_utf8);
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84 int convert_input(char_u *ptr, int len, int maxlen);
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85 int convert_input_safe(char_u *ptr, int len, int maxlen, char_u **restp, int *restlenp);
21b0a39d13ed commit https://github.com/vim/vim/commit/ef26954a35207c3f17d6ed35d9a40c918d974892
Christian Brabandt <cb@256bit.org>
parents: 4069
diff changeset
86 char_u *string_convert(vimconv_T *vcp, char_u *ptr, int *lenp);
21b0a39d13ed commit https://github.com/vim/vim/commit/ef26954a35207c3f17d6ed35d9a40c918d974892
Christian Brabandt <cb@256bit.org>
parents: 4069
diff changeset
87 char_u *string_convert_ext(vimconv_T *vcp, char_u *ptr, int *lenp, int *unconvlenp);
21971
0bc43a704f56 patch 8.2.1535: it is not possible to specify cell widths of characters
Bram Moolenaar <Bram@vim.org>
parents: 20695
diff changeset
88 void f_setcellwidths(typval_T *argvars, typval_T *rettv);
31760
f348559ce426 patch 9.0.1212: cannot read back what setcellwidths() has done
Bram Moolenaar <Bram@vim.org>
parents: 29310
diff changeset
89 void f_getcellwidths(typval_T *argvars, typval_T *rettv);
21973
85add08e6a2d patch 8.2.1536: cannot get the class of a character; emoji widths are wrong
Bram Moolenaar <Bram@vim.org>
parents: 21971
diff changeset
90 void f_charclass(typval_T *argvars, typval_T *rettv);
33399
95db67c7b754 patch 9.0.1958: cannot complete option values
Christian Brabandt <cb@256bit.org>
parents: 31760
diff changeset
91 char_u *get_encoding_name(expand_T *xp, int idx);
7
3fc0f57ecb91 updated for version 7.0001
vimboss
parents:
diff changeset
92 /* vim: set ft=c : */