Blog

C 新的功能

C 編輯器（Editor）

• Visual Studio 2010 crashes in a C/C project when hiding or showing all files of solution.
• Class member auto-completion forces wrong member (case-sensitive).
• Go to Declaration is slow in some cases.
• The C Editor may crash when you insert comments.
• A crash occurs while declaring C enumuneration.
• Issues occurred in native IntelliSense, such as with indexes and reporting.
• The NavigateTo method in C occasionally becomes unresponsive.
• Performance and stability improvements
• More efficient memory management
• Other IDE improvements to prevent user interface (UI) freezes and crashes
• Performance improvement for the F12 (Goto Definition) function key on large projects.

C 編譯器（Compiler）

• C compiler generates incorrect movups instructions instead of movss instructions.
• There is a specific problem with the /Og option in the 64-bit version of Visual Studio 2010 Beta 2 compiler.
• SSE2 instructions are generated when the /arch:SSE option is specified.
• There are specific problems in the x64 version of the C compiler (optimizer).
• Destructor calls are missing when optimization is enabled.
• The compiler crashes with the "decltype(*this)" type specifier.
• Optimizations and fixes in several code generation areas
• Managed Incremental Build parity with Visual Studio 2008. For more information, click the following article number to view the article in the Microsoft Knowledge Base: 982721 The Enable Managed Incremental Build property does not exist when you open the Project Properties pages for a Visual C 2010 project.

標準 C 函式庫（Standard C Library）

• The "vector::erase" constraint returns an incompatible iterator in the debug build.
• The behavior of the "tr1:regex" constraint differs in Visual Studio 2008 and in Visual Studio 2010 when some regular expressions are used.
• When you use the “std::vector<std::string>" statement, a memory leak occurs when you run your program.

C Runtime (CRT)

• MSPDB100.dll is dynamically loaded, but the DLL does not specify a fully qualified path in the CRT.
• When the the WEOF constant is passed to the "swprintf_s" function, the buffer does not receive a NULL termination.

Microsoft Foundation Classes (MFC) and Active Template Library (ATL)

• In the CDatabase/Crecordset MFC, the "DoFieldExchange" variable does not work correctly in Visual Studio 2010.
• Security, performance and other improvements in ATL/MFC.

C Debugging

• Mixed call stacks are broken when you debug C code.
• When you try to inspect local variables while you are debugging in Visual Studio 2010, you receive a "CXX0017 "Symbol not found" error message.
• The Watch window displays incorrect values.