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vim-patch:8.0.1468: illegal memory access in del_bytes()

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Problem:    Illegal memory access in del_bytes().
Solution:   Check for negative byte count. (Christian Brabandt, closes vim/vim#2466)
191f18bad0
This commit is contained in:
Jan Edmund Lazo
2018-08-24 22:29:59 -04:00
parent bdffa01b52
commit 16b55d2e9d
3 changed files with 14 additions and 6 deletions
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2
src/nvim/strings.c
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@@ -1217,6 +1217,7 @@ int vim_vsnprintf(char *str, size_t str_m, const char *fmt, va_list ap,
str_arg_l = 3;
zero_padding = 0;
} else {
// Regular float number
format[0] = '%';
size_t l = 1;
if (force_sign) {
@@ -1241,7 +1242,6 @@ int vim_vsnprintf(char *str, size_t str_m, const char *fmt, va_list ap,
format[l] = (char)(fmt_spec == 'F' ? 'f' : fmt_spec);
format[l + 1] = NUL;
// Regular float number
str_arg_l = (size_t)snprintf(tmp, sizeof(tmp), format, f);
assert(str_arg_l < sizeof(tmp));