fix(decoder): 修复模型重载的内存释放与树节点泄漏

src/share/spellingtrie.cpp

@@ -84,11 +84,11 @@ SpellingTrie::~SpellingTrie() {
     }
 
     if (NULL != dumb_node_) {
-        delete[] dumb_node_;
+        delete dumb_node_;
     }
 
     if (NULL != splitter_node_) {
-        delete[] splitter_node_;
+        delete splitter_node_;
     }
 
     if (NULL != instance_) {
@@ -266,6 +266,14 @@ bool SpellingTrie::construct(const char* spelling_arr, size_t item_size, size_t
     node_num_ = 1;
 #endif
 
+    // Model reloads reuse this singleton; release the previous tree first.
+    if (root_) {
+        free_son_trie(root_);
+        delete root_;
+    }
+    delete dumb_node_;
+    delete splitter_node_;
+
     root_ = new SpellingNode();
     memset(root_, 0, sizeof(SpellingNode));
 
@@ -346,7 +354,7 @@ bool SpellingTrie::build_ym_info() {
     delete spl_table;
 
     // Generate the maping from the spelling ids to the Yunmu ids.
-    if (spl_ym_ids_) delete spl_ym_ids_;
+    if (spl_ym_ids_) delete[] spl_ym_ids_;
     spl_ym_ids_ = new uint8[spelling_num_ + kFullSplIdStart];
     if (NULL == spl_ym_ids_) return false;
 

tests/decoder_smoke.cpp

@@ -6,21 +6,23 @@
 int main(int argc, char** argv) {
     if (argc != 3) return 2;
     std::remove(argv[2]);
-    if (!ime_pinyin::im_open_decoder(argv[1], argv[2])) {
-        std::cerr << "Cannot open decoder dictionary\n";
-        return 1;
-    }
     int status = 0;
-    for (const char* input : {"nihao", "zhongguo", "shurufa"}) {
-        ime_pinyin::im_reset_search();
-        const auto count = ime_pinyin::im_search(input, std::strlen(input));
-        ime_pinyin::char16 candidate[256] = {};
-        if (!count || !ime_pinyin::im_get_candidate(0, candidate, 256) || !candidate[0]) {
-            std::cerr << "No candidate for " << input << '\n';
-            status = 1;
+    for (int reload = 0; reload < 3; ++reload) {
+        if (!ime_pinyin::im_open_decoder(argv[1], argv[2])) {
+            std::cerr << "Cannot open decoder dictionary\n";
+            return 1;
         }
+        for (const char* input : {"nihao", "zhongguo", "shurufa"}) {
+            ime_pinyin::im_reset_search();
+            const auto count = ime_pinyin::im_search(input, std::strlen(input));
+            ime_pinyin::char16 candidate[256] = {};
+            if (!count || !ime_pinyin::im_get_candidate(0, candidate, 256) || !candidate[0]) {
+                std::cerr << "No candidate for " << input << '\n';
+                status = 1;
+            }
+        }
+        ime_pinyin::im_close_decoder();
     }
-    ime_pinyin::im_close_decoder();
     std::remove(argv[2]);
     return status;
 }