[Boost-testing] Re: tru64-regex failures?

From: Markus Schöpflin (markus.schoepflin_at_[hidden])
Date: 2005-05-14 11:05:16

John Maddock wrote:

>> After some more investigation, I can reproduce the failure when 
>> building with bjam, and the tru64cxx65 toolset, there are some 
>> differences in how template instantiation is handled (the 
>> -timplicit_local option), so I'm going to investigate that next...
> 
> And it does appear that the -timplicit_local option is the problem, but 
> I'm not sure why yet, especially as it seems to speed up compilation 
> quite a bit...

John,

I think I found a solution to the problem, but unfortunately I'm not in 
the office until next Tuesday, therefore I can't check to be sure.

But from the top of my head, somewhere in the regex library there are 
template functions to_lower and to_upper which look like this:

template <class CharT> inline
CharT to_lower(CharT c) { return c; }

and then

char to_lower(char c);
wchar_t to_lower(wchar_t c);

The failing regression tests are due to the fact that the template 
version is called, both for char and wchar_t.

When replacing the char and wchar_t version with the following declaration:

template<> char to_lower(char c);
template<> wchar_t to_lower(wchar_t c);

and the following definition:

template<> char to_lower(char c) { ... }
template<> wchar_t to_lower(wchar_t c) { ... }

the right version of to_lower gets called.

I didn't have time to check if this works without the inline workaround, 
but I will do on Tuesday.

Markus