Markus Schöpflin wrote:
Hello!
Currently, the name mangling scheme used on this platform is the default one selected by the compiler. It turns out that this is a bad choice when compiling boost. The problem is illustrated by the following example:
---%<--- #include <iostream> using namespace std;
template <typename T> void foo(T const &x) { cout << "1" << endl; }
template <typename T> void foo(T * const &x) { cout << "2" << endl; }
int main() { foo("abc"); return 0; } --->%---
This prints out "2" with the default name mangling scheme. When manually selecting "ansi" as the name mangling scheme, the correct result "1" is printed.
Therefore I propose to explicitely set the name mangling to ansi in the tools file for this compiler. Does anyone have any strong feelings or arguments against such a change?
probably "-model ansi" is sufficient, and IMO absolutely necessary. IIRC correctly, there are issues with class-scope enumerations colliding, and in the past I also had a problem with non-type template parameters that I can't remember the details of just now.
From the cxx man page:
-model [ansi | arm] [Tru64] Determines the layout of C++ classes, name mangling, and exception handling. On Tru64 UNIX, the default is -model arm; on Linux Alpha, the default is -model ansi. The -model arm option is not supported on Linux Alpha. The -model arm option is the default and generates objects that are link compatible with all Compaq C++ releases prior to Version 6.3, and with all objects compiled using the -model arm option in Compaq C++ Version 6.3 or later. Specifying this option defines the macro __MODEL_ARM. The -model ansi option supports the complete ISO/ANSI C++ specification, including distinct name mangling for templates. The ANSI model also reduces the size of C++ non-POD class objects. Note that this option generates objects that are not compatible with prior releases of Compaq C++, or with objects compiled using the -model arm option. If you specify the -model ansi option, you must recompile your entire application, including libraries. Specifying this option defines the macro __MODEL_ANSI. HTH, Ian McCulloch