[Bug c++/13682] Compile error with cstdio: fgetpos not declared on AIX

["patrick133t at yahoo dot com" <gcc-bugzilla@gcc.gnu.org>]

------- Comment #7 from patrick133t at yahoo dot com  2008-06-03 18:19 -------
I see this on AIX 5.3 also. I tracked it down by creating a simple program that
just does a #include <string> and then saw that it worked when compiled as:

g++ -c -o bar.o bar.cc

However, it fails to compile when I do

g++ -c -D_LARGE_FILES -o bar.o bar.cc

I then grepped all the files that get included in the preprocessed output and
found only these two reference _LARGE_FILES:

/opt/freeware/lib/gcc-lib/powerpc-ibm-aix5.1.0.0/3.3.2/include/stdio.h
/opt/freeware/lib/gcc-lib/powerpc-ibm-aix5.1.0.0/3.3.2/include/sys/types.h

The problem appears to be that stdio.h makes the following definitions that
then get #undef'ed in cstdio:

#define fseeko fseeko64
#define ftello ftello64
#define fgetpos fgetpos64
#define fsetpos fsetpos64
#define fopen fopen64
#define freopen freopen64

Because of these defitions, the prototypes in the preprocessed output have a 64
on the end but the using ::fsetpos do not have them, and we get the error.

I really think this is GCC's problem and not caused by AIX headers.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13682