Mail Archives: djgpp/2000/04/19/10:16:52

From: Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: 'volatile' undeclared from here
Date: 19 Apr 2000 14:20:03 GMT
Organization: Aachen University of Technology (RWTH)
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To: djgpp AT delorie DOT com
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Alexandre Devaure <Alexandre DOT Devaure AT leroy-autom DOT com> wrote:

> template<class T, unsigned Size>
> class TValueFifo
> {
>  int PutSecure(const T& Value)
>         {
>                 asm volatile ("pushf");  <= the problem is here
>   disable();
>   int Error = Put(Value);
>   popf();

>   return Error;
>  }

Compiler error message was:

> tfifo.h: In method `int TValueFifo<STaskMessage,64>::PutSecure(const
> STaskMessage &)':
> taskmgr.cpp:542:   instantiated from here
> tfifo.h:35: `volatile' undeclared (first use this function)
> tfifo.h:35: (Each undeclared identifier is reported only once
> tfifo.h:35: for each function it appears in.)
> tfifo.h:35: warning:  qualifier ignored on asm

[Some of the other warnings are also quite nasty, so this is
definitely not the only problem int that code...]

I've never used or seen anyone use inline assembly in C++ programs,
but even so, one of the things you should try is to replace the
keywords by their ANSI standard-blessed equivalents,

	__asm__ __volatile__ ("pushf");

Hans-Bernhard Broeker (broeker AT physik DOT rwth-aachen DOT de)
Even if all the snow were burnt, ashes would remain.

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