extern "C" {}

[Han-Wen Nienhuys]

gcc 2.96 from redhat 7.0

from the manual:

  `implicit C language'
     Old C system header files did not contain an `extern "C" {...}'
     scope to set the language. On such systems, all header files are
     implicitly scoped inside a C language scope. Also, an empty
     prototype `()' will be treated as an unspecified number of
     arguments, rather than no arguments, as C++ demands.


this seems in conflict with:

        #include <stdio.h>
        extern "C"
        {
          extern FILE * popen();
        }

->

        g++    -c -o foo.o foo.cc
        foo.cc:4: declaration of C function `FILE *popen ()' conflicts with
        /usr/include/stdio.h:574: previous declaration `FILE *popen (const char 
        *, const char *)' here



-- 

Han-Wen Nienhuys   |   address@hidden    | http://www.cs.uu.nl/~hanwen/