Update test_static

snippet/cpp/test_static.c

@@ -34,7 +34,14 @@ int main(int argc, char **argv) {
     // test();
     // test2();
     // test2();
-    // addr of p: 0x5619048df2d0, addr of q: 0x7fb51f2e19e0
+    /**
+     * TODO: 看起来操作系统决定 malloc 申请的内存在哪里
+     * Output on linux64 compiled by clang
+     * addr of p: 0x5619048df2d0, addr of q: 0x7fb51f2e19e0
+     * Output on win64 compiled by MinGW64 gcc
+     * addr of p: 000000B0591FFB20, addr of q: 000000B0591FFB00
+     */
     printf("addr of p: %p, addr of q: %p\n", p, *q);
     free(q);
+    return 0;
 }