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Fix bug in stack breakdown procedure

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This commit is contained in:
Max Brunsfeld 2014-03-21 12:46:23 -07:00
parent cbc66b359e
commit bdbe69258a
4 changed files with 76 additions and 32 deletions
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8
src/runtime/tree.c
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@ -71,7 +71,7 @@ int ts_tree_equals(const ts_tree *node1, const ts_tree *node2) {
}
ts_tree ** ts_tree_children(const ts_tree *tree, size_t *count) {
if (tree->symbol == ts_builtin_sym_error) {
if (!tree || tree->symbol == ts_builtin_sym_error) {
if (count) *count = 0;
return NULL;
}
@ -82,13 +82,13 @@ ts_tree ** ts_tree_children(const ts_tree *tree, size_t *count) {
static size_t tree_write_to_string(const ts_tree *tree, const char **symbol_names, char *string, size_t limit, int is_beginning) {
char *cursor = string;
char **destination = (limit > 0) ? &cursor : &string;
if (!tree)
return snprintf(*destination, limit, "(NULL)");
if (!tree->is_hidden && !is_beginning)
cursor += snprintf(*destination, limit, " ");
if (tree->symbol == ts_builtin_sym_error) {
cursor += snprintf(*destination, limit, "(ERROR)");
return cursor - string;
@ -104,7 +104,7 @@ static size_t tree_write_to_string(const ts_tree *tree, const char **symbol_name
if (!tree->is_hidden)
cursor += snprintf(*destination, limit, ")");
return cursor - string;
}