Huge sets may cause stack to be exhausted.
So, put allocate memory for arrays in
interval_map_decompose() function on heap.
Signed-off-by: Oleksandr Natalenko <oleksandr@xxxxxxxxxxxxxx>
---
src/segtree.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/src/segtree.c b/src/segtree.c
index 5b6cdd1..d3873d9 100644
--- a/src/segtree.c
+++ b/src/segtree.c
@@ -608,12 +608,15 @@ static int expr_value_cmp(const void *p1, const void *p2)
void interval_map_decompose(struct expr *set)
{
- struct expr *elements[set->size], *ranges[set->size * 2];
+ struct expr **elements, **ranges;
struct expr *i, *next, *low = NULL, *end;
unsigned int n, m, size;
mpz_t range, p;
bool interval;
+ elements = xmalloc_array(set->size, sizeof(struct expr *));
+ ranges = xmalloc_array(set->size * 2, sizeof(struct expr *));
+
mpz_init(range);
mpz_init(p);
@@ -728,4 +731,7 @@ void interval_map_decompose(struct expr *set)
compound_expr_add(set, i);
}
+
+ xfree(ranges);
+ xfree(elements);
}
--
2.11.0
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