Resize instead of reserve

Signed-off-by: Julien Jerphanion <[email protected]>

libmamba/src/core/util_os.cpp

@@ -47,6 +47,35 @@ static_assert(std::is_same_v<mamba::DWORD, ::DWORD>);
 
 namespace mamba
 {
+#ifdef _WIN32
+    fs::u8path get_path_of_hmodule(HMODULE hModule)
+    {
+        std::wstring buffer(MAX_PATH, '\0');
+        DWORD new_size = MAX_PATH;
+        DWORD size = 0;
+        while (true)
+        {
+            size = GetModuleFileNameW(hModule, buffer.data(), static_cast<DWORD>(buffer.size()));
+            if (size == 0)
+            {
+                throw mamba::mamba_error(
+                    "Could find the filename of the libmamba's module handle. (GetModuleFileNameW failed)",
+                    mamba_error_code::internal_failure
+                );
+            }
+            if (size < new_size)
+            {
+                break;
+            }
+
+            new_size *= 2;
+            buffer.reserve(new_size);
+        }
+        buffer.resize(size);
+        return fs::absolute(buffer);
+    }
+#endif
+
     // Heavily inspired by https://github.com/gpakosz/whereami/
     // check their source to add support for other OS
     fs::u8path get_self_exe_path()
@@ -126,7 +155,7 @@ namespace mamba
             }
 
             new_size *= 2;
-            buffer.reserve(new_size);
+            buffer.resize(new_size);
         }
         buffer.resize(size);
         return fs::absolute(buffer);