From:	"Alexandre Devaure" <Alexandre DOT Devaure AT leroy-autom DOT com>
Newsgroups:	comp.os.msdos.djgpp
References:	<fAeL4.1879$_d1 DOT 3770486 AT nnrp4 DOT proxad DOT net> <8dk3aa$m6a$1 AT nets3 DOT rz DOT RWTH-Aachen DOT DE>
Subject:	Re: 'volatile' undeclared from here
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Date:	Wed, 19 Apr 2000 11:28:05 GMT
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To:	djgpp AT delorie DOT com
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Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de> a écrit dans le
message : 8dk3aa$m6a$1 AT nets3 DOT rz DOT RWTH-Aachen DOT DE...

> Please show more details. Minimal source code, gcc command line (with
> '-v' added, and the actual compiler output, in full text.

Here it is

The source code :

template<class T, unsigned Size>
class TValueFifo
{
private:
 unsigned Head;
 unsigned Tail;
 unsigned Count;
 unsigned char Buffer[Size*sizeof(T)];

public:
 int Empty() { return !Count; }
 int Full() { return Count==Size; }
 int Put(const T& Value)
        {
                if (!Full())
  {
   ((T*)Buffer)[Head]= Value;
   if (Head>=Size-1)
    Head=0;
   else
    Head++;
   Count++;
   return 0;
  }
  return 1;
 }
 int PutSecure(const T& Value)
        {
                asm volatile ("pushf");  <= the problem is here
  disable();
  int Error = Put(Value);
  popf();

  return Error;
 }
 void Get(T& Value)
 {
  Value= ((T*)Buffer)[Tail];
  if (Tail>=Size-1)
   Tail=0;
  else
   Tail++;
  Count--;
 }
 T Get()
 {
  T Value;
  Get(Value);
  return Value;
 }

 TValueFifo() : Head(0), Tail(0), Count(0) {}
};


the gcc output:
gcc -v -c taskmgr.cpp -I.

Reading specs from c:/usr/lib/specs
gcc version 2.95.2 19991024 (release)
 c:/usr/lib/gcc-lib/djgpp/2.952/cpp.exe -lang-c++ -v -I. -isystem
c:/usr/bin/include -D__GNUC__=2 -D__GNUG__=2 -D__GNUC_MINOR__=95 -D__cpluspl
us -Dunix -Di386 -DGO32 -DMSDOS -DDJGPP=2 -DDJGPP_MINOR=2 -D__unix__ -D__i38
6__ -D__GO32__ -D__MSDOS__ -D__DJGPP__=2 -D__DJGPP_MINOR__=2 -D__unix -D__i3
86 -D__GO32 -D__MSDOS -D__DJGPP=2 -D__DJGPP_MINOR=2 -D__EXCEPTIONS
taskmgr.cpp C:\windows\TEMP\cc6RbN8i.ii
GNU CPP version 2.95.2 19991024 (release) (80386, BSD syntax)
#include "..." search starts here:
#include <...> search starts here:
 .
 c:/usr/lang/cxx
 c:/usr/include
 c:/usr/lang/cxx
 c:/usr/lib/gcc-lib/djgpp/2.952/include
 c:/usr/include
End of search list.
The following default directories have been omitted from the search path:
 $DJDIR/lib/gcc-lib/djgpp/2.952/../../../../djgpp/include
End of omitted list.
 c:/usr/lib/gcc-lib/djgpp/2.952/cc1plus.exe
C:\windows\TEMP\cc6RbN8i.ii -m486 -malign-jumps=2 -malign-loops=2 -malign-fu
nctions=2 -m486 -malign-jumps=2 -malign-loops=2 -malign-functions=2 -quiet -
dumpbase taskmgr.cc -version -o C:\windows\TEMP\ccx1hBjr.s
GNU C++ version 2.95.2 19991024 (release) (djgpp) compiled by GNU C version
2.95.2 19991024 (release).
In file included from taskmgr.cpp:17:
taskmgr.h: In function `int Task_StateCriticalSection()':
taskmgr.h:205: warning: negative value `-1' passed as argument 1 of
`Task_CriticalSection(unsigned char)'
taskmgr.cpp: In function `int Task_CriticalSectionState(...)':
taskmgr.cpp:241: warning: negative value `-1' passed as argument 1 of
`Task_CriticalSection(unsigned char)'
taskmgr.cpp: In function `union TIntStack * TaskHandlerProc(TIntStack *,
int)':
taskmgr.cpp:335: warning: negative value `-1' passed as argument 1 of
`Task_CriticalSection(unsigned char)'
taskmgr.cpp:363: warning: left shift count >= width of type
taskmgr.cpp:370: warning: assignment of negative value `-1' to `short
unsigned int'
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
taskmgr.cpp:542:   instantiated from here
tfifo.h:38: warning:  qualifier ignored on asm
taskmgr.cpp: In function `void TaskTimebase()':
taskmgr.cpp:579: ANSI C++ forbids declaration `TimeAccu' with no type
taskmgr.cpp: In function `int Task_Create(void (*)(), short unsigned int,
void * = 0, short unsigned int, unsigned char = 0)':
taskmgr.cpp:717: implicit declaration of function `int memset(...)'
taskmgr.cpp:748: implicit declaration of function `int max(...)'
taskmgr.cpp:748: implicit declaration of function `int _fmemset(...)'
taskmgr.cpp:787: implicit declaration of function `int min(...)'
taskmgr.cpp:800: name lookup of `PriorityDescIndex' changed for new ANSI
`for' scoping
taskmgr.cpp:797:   using obsolete binding at `PriorityDescIndex'
taskmgr.cpp:805: implicit declaration of function `int memmove(...)'
taskmgr.cpp:823: name lookup of `TaskVsPriorityIndex' changed for new ANSI
`for' scoping
taskmgr.cpp:820:   using obsolete binding at `TaskVsPriorityIndex'
taskmgr.cpp:832: implicit declaration of function `int FP_SEG(...)'
taskmgr.cpp:836: implicit declaration of function `int MK_FP(...)'
taskmgr.cpp:836: implicit declaration of function `int _fmemcpy(...)'
taskmgr.cpp: In function `void TaskStartUp()':
taskmgr.cpp:1028: implicit declaration of function `int getvect(...)'
taskmgr.cpp:1028: assignment to `void (*)(...)' from `int' lacks a cast
taskmgr.cpp:1029: implicit declaration of function `int setvect(...)'
taskmgr.cpp:1035: assignment to `void (*)(...)' from `int' lacks a cast

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