From: Andris Pavenis <pavenis AT latnet DOT lv>
To: djgpp-workers AT delorie DOT com,
   Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de>
Subject: Re: conio.h bug?
Date: Tue, 1 Jul 2003 15:22:57 +0300
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References: <bdq8md$hjv$1 AT newsreader1 DOT netway DOT at> <bdrgbo$937$1 AT nets3 DOT rz DOT RWTH-Aachen DOT DE>
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Reply-To: djgpp-workers AT delorie DOT com

On Tuesday 01 July 2003 11:22, Hans-Bernhard Broeker wrote:
> News Reader <nospam AT aol DOT com> wrote:
> > 1) Compiler error received:
> >
> >   In file included from test.c:1:
> >   c:/ab/djgpp/include/conio.h:74: error:
> >     nonnull argument references non-pointer operand (arg 1, operand 1)
>
> [Later clarified that this only happens with GCC-3.3, not earlier
> versions].
>
> > 3) Line 74 in header file:
> >
> >   int gettext(int _left, int _top, int _right, int _bottom, void
> > *_destin);
>
> This is the 2.03 version of conio.h.  In 2.04alpha, this function is
> renamed to _conio_gettext, to avoid a conflict with <libintl.h> from
> GNU gettext, the program localization toolset.
>
> To me, this sounds more like a potential bug in GCC-3.3 or its port
> than a bug in conio.h --- that source line appears to be completely
> correct, and the error message makes no sense whatsoever.
>
> It might help to check preprocessor output for this, i.e.:
>
> 	gcc -E -dD test.c > test.i
>
> and inspect test.i closely.  Particularly check what became of line 74
> of conio.h.
>
> Andris: did you put any machinery into the 3.3 port to deal with the
> gettext() ambiguity? Maybe in some pre-loaded header?

No. I haven't done anything with it. Did tests under Linux
with gcc-3.4 20030630 (experimental) and gcc-3.3.1 20030627 (prerelease)
Results are below. So it's not a DJGPP only problem.

gettext appears in file gcc/builtin-attrs.def for CVS at least beginning with gcc-3.2
branch (haven't looked earlier). 

Andris

andris AT geomets2:/disk2/cvs/gcc/3.4/build/build.lnx/gcc$ cat ~/bad.c
int     gettext(int _left, int _top, int _right, int _bottom, void *_destin);
andris AT geomets2:/disk2/cvs/gcc/3.4/build/build.lnx/gcc$ xgcc -v -B ./ -c ~/bad.c
Reading specs from ./specs
Configured with: ../gcc/configure --prefix=/disk2/gcc34 --enable-shared --verbose --enable-languages=c,c++,f77,objc,ada --enable-threads=posix
Thread model: posix
gcc version 3.4 20030630 (experimental)
 ./cc1 -quiet -v -iprefix /disk2/cvs/gcc/3.4/build/build.lnx/gcc/../lib/gcc-lib/i686-pc-linux-gnu/3.4/ -isystem ./include /home/andris/bad.c -quiet -dumpbase bad.c -mtune=pentiumpro -auxbase bad -version -o /tmp/ccyKdGO1.s
ignoring nonexistent directory "/disk2/cvs/gcc/3.4/build/build.lnx/lib/gcc-lib/i686-pc-linux-gnu/3.4/include"
ignoring nonexistent directory "/disk2/cvs/gcc/3.4/build/build.lnx/lib/gcc-lib/i686-pc-linux-gnu/3.4/../../../../i686-pc-linux-gnu/include"
ignoring nonexistent directory "/disk2/gcc34/include"
ignoring nonexistent directory "/disk2/gcc34/lib/gcc-lib/i686-pc-linux-gnu/3.4/include"
ignoring nonexistent directory "/disk2/gcc34/i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 include
 /usr/local/include
 /usr/include
End of search list.
GNU C version 3.4 20030630 (experimental) (i686-pc-linux-gnu)
        compiled by GNU C version 3.4 20030630 (experimental).
GGC heuristics: --param ggc-min-expand=64 --param ggc-min-heapsize=64398
/home/andris/bad.c:1: error: nonnull argument references non-pointer operand (arg 1, operand 1)
/home/andris/bad.c:1: error: nonnull argument references non-pointer operand (arg 1, operand 1)
andris AT geomets2:/disk2/cvs/gcc/3.4/build/build.lnx/gcc$ cd ../../../../3.3/build/build.lnx/gcc
andris AT geomets2:/disk2/cvs/gcc/3.3/build/build.lnx/gcc$ xgcc -v -B ./ -c ~/bad.c
Reading specs from ./specs
Configured with: ../gcc/configure --prefix=/disk2/gcc33 --enable-shared --verbose --enable-languages=c,c++,f77,objc,ada --enable-threads=posix
Thread model: posix
gcc version 3.3.1 20030627 (prerelease)
 ./cc1 -quiet -v -iprefix ./../lib/gcc-lib/i686-pc-linux-gnu/3.3.1/ -isystem ./include -D__GNUC__=3 -D__GNUC_MINOR__=3 -D__GNUC_PATCHLEVEL__=1 /home/andris/bad.c -quiet -dumpbase bad.c -auxbase bad -version -o /tmp/ccG3GUGd.s
GNU C version 3.3.1 20030627 (prerelease) (i686-pc-linux-gnu)
        compiled by GNU C version 3.3.1 20030627 (prerelease).
GGC heuristics: --param ggc-min-expand=64 --param ggc-min-heapsize=64398
ignoring nonexistent directory "../lib/gcc-lib/i686-pc-linux-gnu/3.3.1/include"
ignoring nonexistent directory "../lib/gcc-lib/i686-pc-linux-gnu/3.3.1/../../../../i686-pc-linux-gnu/include"
ignoring nonexistent directory "/disk2/gcc33/include"
ignoring nonexistent directory "/disk2/gcc33/lib/gcc-lib/i686-pc-linux-gnu/3.3.1/include"
ignoring nonexistent directory "/disk2/gcc33/i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 include
 /usr/local/include
 /usr/include
End of search list.
/home/andris/bad.c:1: error: nonnull argument references non-pointer operand (arg 1, operand 1)
/home/andris/bad.c:1: error: nonnull argument references non-pointer operand (arg 1, operand 1)