On 09/25/2013 06:39 AM, Amos Jeffries wrote: > As some of you know I have been working with a sponsor to get Windows > builds going again this year. > > Visual Studio is giving me a strange error though in our SquidString.h > code: > error C2057: expected constant expression > > this is occuring on the code line: > statis const size_type npos = std::string::npos; > > any ideas about how to solve this one properly? for now we are having to > just define it as -1 by looking up the VC header files definitions of > std::string::npos manually.
There is a long discussion about this at http://compgroups.net/comp.lang.c++/isn-t-std-string-npos-an-integral-constant/1043674 There are a couple of interesting explanations offered, including allegations of an STL implementation bug, but no final resolution (and the explanations may not apply to our specific case). Suggestions: 1) Try moving String::npos initialization into String.cc. 2) If #1 alone does not help, try #1 with casted -1 instead of npos. HTH, Alex.
