Re: [boost] Re: CRC Library Formal Review

From: Beman Dawes (bdawes_at_[hidden])
Date: 2001-04-17 15:15:40

The new version of CRC I just now downloaded from the vault may have set a 
new record.  At least I can't remember a single test program that caused 
internal compiler errors from TWO of the Win32 compilers.

First try, Borland got an internal compiler error, Metrowerks compiled OK, 
but the others failed.  (See First try, below.)

I commented out "typename" at the indicated places, and tried again.  Now 
GCC joined Borland in the internal compiler error department. Metrowerks 
continued to compile without error, while Microsoft reported errors (see 
Second try, below)

It is really hard to deal with heavily templatized code that hasn't been 
checked out by at least two compilers:-(

--Beman

First try:

** GCC under cygwin
g++ -c -ftemplate-depth-30 -Ic:/boost/site 
c:/boost/site/libs/crc/crc_test.cpp
In file included from c:/boost/site/libs/crc/crc_test.cpp:28:
c:/boost/site/boost/crc.hpp:296: using `typename' outside of template
c:/boost/site/boost/crc.hpp:297: using `typename' outside of template
c:/boost/site/boost/crc.hpp:316: using `typename' outside of template
c:/boost/site/boost/crc.hpp:317: using `typename' outside of template
c:/boost/site/boost/crc.hpp:337: using `typename' outside of template
c:/boost/site/boost/crc.hpp:338: using `typename' outside of template
c:/boost/site/libs/crc/crc_test.cpp: In function `void timing_test(ostream 
&)':
c:/boost/site/libs/crc/crc_test.cpp:153: using `typename' outside of 
template
c:/boost/site/libs/crc/crc_test.cpp:154: confused by earlier errors, 
bailing out>> a.out: crc_test.cpp:409: Assertion `0 == ran_crc_check' 
failed.

Second try:

** Microsoft Visual C++
cl /c /nologo /Zm400 /MDd /W3 /GR /GX /Zi /Od /GZ /I"c:/boost/site" /D 
"WIN32" /D "_DEBUG" /D "_MBCS" /D "_CONSOLE" 
c:/boost/site/libs/crc/crc_test.cpp
crc_test.cpp
c:/boost/site/libs/crc/crc_test.cpp(153) : error C2440: 'initializing' : 
cannot convert from '' to 'unsigned int (__cdecl *)(const void *,unsigned 
int)'
         None of the functions with this name in scope match the target 
type
c:/boost/site/libs/crc/crc_test.cpp(393) : error C2440: 'initializing' : 
cannot convert from '' to 'unsigned int (__cdecl *)(const void *,unsigned 
int)'
         None of the functions with this name in scope match the target 
type
c:/boost/site/libs/crc/crc_test.cpp(395) : error C2440: 'initializing' : 
cannot convert from '' to 'unsigned int (__cdecl *)(const void *,unsigned 
int,unsigned int)'
         None of the functions with this name in scope match the target 
type