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vim-patch:8.0.1470: integer overflow when using regexp pattern

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Problem:    Integer overflow when using regexp pattern. (geeknik)
Solution:   Use a long instead of int. (Christian Brabandt, closes vim/vim#2251)
2c7b906afb
This commit is contained in:
Jan Edmund Lazo
2018-08-10 10:25:02 -04:00
parent f7f65f5a82
commit 5ed303c22b
1 changed files with 8 additions and 2 deletions
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10
src/nvim/regexp_nfa.c
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@@ -1485,7 +1485,7 @@ static int nfa_regatom(void)
default: default:
{ {
int n = 0; long n = 0;
int cmp = c; int cmp = c;
if (c == '<' || c == '>') if (c == '<' || c == '>')
@@ -1511,7 +1511,13 @@ static int nfa_regatom(void)
EMIT(cmp == '<' ? NFA_VCOL_LT : EMIT(cmp == '<' ? NFA_VCOL_LT :
cmp == '>' ? NFA_VCOL_GT : NFA_VCOL); cmp == '>' ? NFA_VCOL_GT : NFA_VCOL);
} }
EMIT(n); #if SIZEOF_INT < SIZEOF_LONG
if (n > INT_MAX) {
EMSG(_("E951: \\% value too large"));
return FAIL;
}
#endif
EMIT((int)n);
break; break;
} else if (c == '\'' && n == 0) { } else if (c == '\'' && n == 0) {
/* \%'m \%<'m \%>'m */ /* \%'m \%<'m \%>'m */