1 files changed, 10 insertions, 0 deletions
diff --git a/regcomp.c b/regcomp.c
index 98ecbe8180..d81334a002 100644
--- a/regcomp.c
+++ b/regcomp.c
@@ -5244,6 +5244,7 @@ size_t
 onig_memsize(const regex_t *reg)
 {
     size_t size = sizeof(regex_t);
+    if (!reg) return 0;
     if (IS_NOT_NULL(reg->p))                size += reg->alloc;
     if (IS_NOT_NULL(reg->exact))            size += reg->exact_end - reg->exact;
     if (IS_NOT_NULL(reg->int_map))          size += sizeof(int) * ONIG_CHAR_TABLE_SIZE;
@@ -5254,6 +5255,15 @@ onig_memsize(const regex_t *reg)
     return size;
 }
 
+size_t
+onig_region_memsize(const OnigRegion *regs)
+{
+    size_t size = sizeof(*regs);
+    if (!regs) return 0;
+    size += regs->allocated * (sizeof(*regs->beg) + sizeof(*regs->end));
+    return size;
+}
+
 #define REGEX_TRANSFER(to,from) do {\
   (to)->state = ONIG_STATE_MODIFY;\
   onig_free_body(to);\