Hi BrowserUK,

I had missed that final post of yours to the thread Inline C: using stderr segfaults?. I think you've got down to a level that I'd like to stay well clear of :-)

Incidentally, as regards *your* thread, did it make any difference if you rewrote test2() to use the perl abstraction layer ? 
void test2 ( char* text ) {
    PerlIO_printf( PerlIO_stderr(), "Got:'%s'\n", text );
}

[download]
As you say, the problems that you faced there may well be related to the problems I've been looking at - though I still have this notion that (at least part of) your problem might arise from the involvement of *2* C runtime libraries.

As for my particular issue, the following (somewhat kludgy) workaround seems to work reliably without any need to turn on $| ... though I haven't yet tried it on anything other than Win32: 
use warnings;
use strict;

use Inline C => Config =>
    INC => '-IC:/_32/C',
    LIBS => '-LC:/_32/C -lmylib',
    BUILD_NOISY => 1;

use Inline C => <<'EOC';
#include <mylib.h>
void _foo(PerlIO * stream) {
     FILE * stdio_stream = PerlIO_exportFILE(stream, NULL);
     my_puts(stdio_stream);
     fflush(stdio_stream);
     PerlIO_releaseFILE(stream, stdio_stream);
}

void _foo2(PerlIO * stream, SV * suffix) {
     FILE * stdio_stream = PerlIO_exportFILE(stream, NULL);
     my_puts(stdio_stream);
     fflush(stdio_stream);
     PerlIO_releaseFILE(stream, stdio_stream);
     PerlIO_printf(stream, "%s", SvPV_nolen(suffix));
     PerlIO_flush(stream);
}


EOC

for(1 .. 2) {
   foo(*stdout, "\nhello from perl\n");
}

for(1 .. 2) {
   foo(*stderr);
   print "\nhello from perl\n";
}


sub foo {
    if(@_ == 1) { _foo($_[0]) }
    elsif(@_ == 2) { _foo2($_[0], $_[1]) }
    else {die "Wrong no. of args to foo" }
}

[download]
Cheers,
Rob

In reply to Re^6: Really, really suffering from buffering by syphilis
in thread Really, really suffering from buffering by syphilis

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