3 files changed, 16 insertions, 70 deletions

diff --git a/include/memory.h b/include/memory.h
index 6cf4536..15cdd11 100644
--- a/include/memory.h
+++ b/include/memory.h
@@ -1,67 +1,8 @@
 #pragma once
 
-#include <string>
+#include <cstdio>
 
-namespace ov4
+inline void cleanup_free_argv(char ***p)
 {
-
-template <typename T>
-class T_raw_mem
-{
-
-public:
-
-    void *_p;
-    std::size_t _len;
-
-    explicit T_raw_mem(std::size_t size)
-    {
-        _p = operator new(size);
-        _len = size;
-    }
-
-    ~T_raw_mem()
-    {
-        operator delete(_p);
-    }
-
-    T *get() const noexcept
-    {
-        return static_cast<T*>(_p);
-    }
-
-    std::size_t get_size() const noexcept
-    {
-        return len;
-    }
-
-    // COPY is not allowed
-    T_raw_mem(const T_raw_mem&) = delete;
-    T_raw_mem& operator=(const T_raw_mem&) = delete;
-
-    // MOVE constructor
-    T_raw_mem(T_raw_mem &&x) noexcept
-        : p(std::exchange(x._p, nullptr)), slen(std::exchange(x._len, 0))
-    { /* empty */ }
-
-    T_raw_mem& operator=(T_raw_mem &&x) noexcept
-    {
-        // if they are same
-        // release itself, which is not expected
-        if (this != &x)
-        {
-            // consider statement: y = x;
-            // release memory of y (if exist)
-            operator delete(_p);
-
-            // and then move
-            _p = std::exchange(x._p, nullptr);
-            _len = std::exchange(x._len, 0);
-        }
-
-        return *this;
-    }
-
-};
-
+    free(*p);
 }
diff --git a/src/eval/eval_exe.cc b/src/eval/eval_exe.cc
index 65e5a34..009fc1c 100644
--- a/src/eval/eval_exe.cc
+++ b/src/eval/eval_exe.cc
@@ -12,6 +12,7 @@
 #include "lang_analysis/symbol_property.h"
 #include "lang_analysis/parseline.h"
 #include "util/io.h"
+#include "memory.h"
 
 using namespace std;
 
@@ -34,7 +35,7 @@ int eval_exe(const string &s, bool is_async, const T_lexer *lexer_instance, size
 
     bool task_type_is_subshell = false;
     const char *raw_input = nullptr;
-    char **argv = nullptr;
+    __attribute__((cleanup(cleanup_free_argv))) char **argv = nullptr;
     const char *unified_cmd_c = nullptr;
     string unified_cmd, s_wrap_eliminated;
 
@@ -55,9 +56,13 @@ int eval_exe(const string &s, bool is_async, const T_lexer *lexer_instance, size
         // NB: remember to delete
         argv = parseline(s);
 
-        if (argv == nullptr || argv[0] == nullptr) { operator delete(argv); return 0; }
 
-        if (exe_bultin_command(argv)) { operator delete(argv); return 0; }
+        // the compiler should free() it here
+        // if returns
+
+        if (argv == nullptr || argv[0] == nullptr) { return 0; }
+
+        if (exe_bultin_command(argv)) { return 0; }
 
         unified_cmd = find_cmd(argv[0]);
         unified_cmd_c = unified_cmd.c_str();
@@ -102,8 +107,7 @@ int eval_exe(const string &s, bool is_async, const T_lexer *lexer_instance, size
     }
 
     // parent
-
-    operator delete(argv);
+    free(argv);
     argv = nullptr;
 
     exit_required_pid = pid;
@@ -136,4 +140,4 @@ int eval_exe(const string &s, bool is_async, const T_lexer *lexer_instance, size
     return 0;
 }
 
-}
\ No newline at end of file
+}
diff --git a/src/util/string.cc b/src/util/string.cc
index bec9638..794e5a1 100644
--- a/src/util/string.cc
+++ b/src/util/string.cc
@@ -1,6 +1,7 @@
 #include "util/string.h"
 
 #include <print>
+#include <cstdio>
 
 using namespace std;
 
@@ -38,8 +39,8 @@ void string2argv(const vector<string> &v, char **argv)
  */
 char **string2argv_alloc(const std::vector<std::string> &v)
 {
-    size_t size = argv_get_required_size(v);
-    char **p = static_cast<char**>(operator new(size));
+    size_t size = argv_get_required_size(v) * sizeof(char);
+    char **p = (char**)malloc(size);
     string2argv(v, p);
     return p;
 }