/usr/include/ivstd/iosfwd is in ivtools-dev 1.2.11a1-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | #ifndef _iv_iosfwd_
#define _iv_iosfwd_
#if __GNUC__>=3
#include_next <iosfwd>
using std::ios_base;
using std::filebuf;
using std::istream;
using std::ostream;
#define out_form(ostr,format,value) \
{ \
char buffer[1024]; \
snprintf(buffer, 1024, format, value); \
ostr << buffer; \
}
#else
class istream;
class ostream;
#define out_form(ostr,format,value) \
ostr.form(format,value);
#endif
#endif
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