, I created a new Win32 project with some STL stuff in it, opened its Properties page and in the "Code generation" section, changed "Enable C++ exceptions" to "No" and tried to compile.
This resulted in lots of errors while compiling STL stuff. Looking at the header files, I found out that _HAS_EXCEPTIONS needs to be defined to 0 to tell STL not to use exceptions, so I added
#define _HAS_EXCEPTIONS 0
to the top of my StdAfx.h. Most errors went away but I was left with "error C2504: ''exception'' : base class undefined" in typeinfo.h. I tried putting _HAS_EXCEPTIONS=0 directly in my project''s "Preprocessor definitions". No change, same error message.
So, although I''m sure there is a cleaner solution, I tried defining the "exception" class myself in my StdAfx.h:
class exception
{
};
Now, everything compiles but I get two unresolved externals while linking:
Test.obj : error LNK2019: unresolved external symbol "void __cdecl std::_Throw(class std::exception const &)" (?_Throw@std@@YAXABVexception@1@@Z) referenced in function "public: void __thiscall std::exception::_Raise(void)const " (?_Raise@exception@std@@QBEXXZ)
Test.obj : error LNK2001: unresolved external symbol "void (__cdecl* std::_Raise_handler)(class std::exception const &)" (?_Raise_handler@std@@3P6AXABVexception@1@@ZA)
So, does anyone know what I''m doing wrong? Is there something else I need to do besides defining _HAS_EXCEPTIONS to 0? Surely its possible to use STL and not have exceptions enabled?
Thanks for any advice!
Disabling exceptions in VC++ .NET 2003 while using STL
Author
I am using Visual C++ .NET 2003. I wanted to see if disabling exceptions would have any effect on a program''s performance. Just to do a quick test before potentially breaking my real project , I created a new Win32 project with some STL stuff in it, opened its Properties page and in the "Code generation" section, changed "Enable C++ exceptions" to "No" and tried to compile.
This resulted in lots of errors while compiling STL stuff. Looking at the header files, I found out that _HAS_EXCEPTIONS needs to be defined to 0 to tell STL not to use exceptions, so I added
#define _HAS_EXCEPTIONS 0
to the top of my StdAfx.h. Most errors went away but I was left with "error C2504: ''exception'' : base class undefined" in typeinfo.h. I tried putting _HAS_EXCEPTIONS=0 directly in my project''s "Preprocessor definitions". No change, same error message.
So, although I''m sure there is a cleaner solution, I tried defining the "exception" class myself in my StdAfx.h:
class exception
{
};
Now, everything compiles but I get two unresolved externals while linking:
Test.obj : error LNK2019: unresolved external symbol "void __cdecl std::_Throw(class std::exception const &)" (?_Throw@std@@YAXABVexception@1@@Z) referenced in function "public: void __thiscall std::exception::_Raise(void)const " (?_Raise@exception@std@@QBEXXZ)
Test.obj : error LNK2001: unresolved external symbol "void (__cdecl* std::_Raise_handler)(class std::exception const &)" (?_Raise_handler@std@@3P6AXABVexception@1@@ZA)
So, does anyone know what I''m doing wrong? Is there something else I need to do besides defining _HAS_EXCEPTIONS to 0? Surely its possible to use STL and not have exceptions enabled?
Thanks for any advice!
, I created a new Win32 project with some STL stuff in it, opened its Properties page and in the "Code generation" section, changed "Enable C++ exceptions" to "No" and tried to compile.
This resulted in lots of errors while compiling STL stuff. Looking at the header files, I found out that _HAS_EXCEPTIONS needs to be defined to 0 to tell STL not to use exceptions, so I added
#define _HAS_EXCEPTIONS 0
to the top of my StdAfx.h. Most errors went away but I was left with "error C2504: ''exception'' : base class undefined" in typeinfo.h. I tried putting _HAS_EXCEPTIONS=0 directly in my project''s "Preprocessor definitions". No change, same error message.
So, although I''m sure there is a cleaner solution, I tried defining the "exception" class myself in my StdAfx.h:
class exception
{
};
Now, everything compiles but I get two unresolved externals while linking:
Test.obj : error LNK2019: unresolved external symbol "void __cdecl std::_Throw(class std::exception const &)" (?_Throw@std@@YAXABVexception@1@@Z) referenced in function "public: void __thiscall std::exception::_Raise(void)const " (?_Raise@exception@std@@QBEXXZ)
Test.obj : error LNK2001: unresolved external symbol "void (__cdecl* std::_Raise_handler)(class std::exception const &)" (?_Raise_handler@std@@3P6AXABVexception@1@@ZA)
So, does anyone know what I''m doing wrong? Is there something else I need to do besides defining _HAS_EXCEPTIONS to 0? Surely its possible to use STL and not have exceptions enabled?
Thanks for any advice!
i could be totally wrong but i guess for your #define to work you would need to recompile the STL lib''s?
maybe you could try switching to e.g. SGI''s STL (which comes as a plain bunch of header files), lookup the file "stdexcept" (without the ".h"
and go from there.
hope this helps
maybe you could try switching to e.g. SGI''s STL (which comes as a plain bunch of header files), lookup the file "stdexcept" (without the ".h"
and go from there.hope this helps
quote:Surely its possible to use STL and not have exceptions enabled?
So how should push_back() report allocation failure? How should vector::at() signal out-of-bounds conditions?
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