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fix a segfault issue #407

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merged 1 commit into from
Mar 31, 2021
Merged

fix a segfault issue #407

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6 changes: 4 additions & 2 deletions src/search.c
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Original file line number Diff line number Diff line change
Expand Up @@ -14,11 +14,13 @@ static int is_empty(const char *s) {
}

SEXP find_unbalanced_bracket(SEXP content, SEXP _row, SEXP _col, SEXP _skip_el) {
int ncontent = Rf_length(content);
int row = Rf_asInteger(_row);
int col = Rf_asInteger(_col);
int skip = Rf_asInteger(_skip_el);

int i, j, k;
int i, j;
int k = 0;
int n;
const char* c;
unsigned char cj;
Expand All @@ -29,7 +31,7 @@ SEXP find_unbalanced_bracket(SEXP content, SEXP _row, SEXP _col, SEXP _skip_el)
int nunbalanced = 0;
char brac[2] = " \x00";

for (i = row; i >= 0; i--) {
for (i = row; i >= 0 && i < ncontent; i--) {
c = Rf_translateCharUTF8(STRING_ELT(content, i));
if (skip && i < row && is_empty(c)) {
// skip empty row when search backward
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