Quick&dirty C++ language conformance tests

[Michael]

Hmmm, the last two of the list return 1, but the first (throwing destructor) returns 0. Visual Studio C++ .NET 2003 and gcc version 3.4.4 (mingw special) gives the same results and behaves (for what I could see) in the same way.

Michael

[grv575]

-O2 to the linker? 18%? I just tried that and the filesize is still the same.

-Wl,-O2

Am I missing something?

-Os optimizes size
and it doesn't need to be passed directly to the linker.
Still optimizing for speed is more important (-O2, -O3)

[thomas]

-Os optimizes size
and it doesn't need to be passed directly to the linker.

I can only repeat: read the manual.

-O level
If  level  is a numeric values greater than zero ld optimizes the output.  This might take significantly longer and therefore
probably should only be enabled for the final binary.

[grv575]

Code Select Expand


man gcc says:

-O1 Optimize.
-O2 Optimize even more...performs nearly all supported optimizations that do not involve a space-speed tradeoff.
-O3 Optimize yet more.
-O0 Do not optimize.  This is the default.
-Os Optimize for size.  -Os enables all -O2 optimizations that do not typically increase code size.   It also performs further optimizations designed to reduce code size.


[thomas]

Try man ld 

[280Z28]

If someone tried any of the ones MSVC 2005 fails, I would want to slap them for making me go  :? as I tried to read their code.

[Michael]

If someone tried any of the ones MSVC 2005 fails, I would want to slap them for making me go  :? as I tried to read their code.

Which one for example?

Michael

[280Z28]

If someone tried any of the ones MSVC 2005 fails, I would want to slap them for making me go  :? as I tried to read their code.

Which one for example?

Michael

Code Select Expand

int main(int argc, char *argv[])
{
  int i = compl((2 bitor 4) xor 4) bitand 3;
  bool b = not ((true or false) and true);

  b and_eq true;
  b or_eq false;
  b xor_eq true;
  b not_eq not b;

  return 0;
}

[Michael]

Code Select Expand

int main(int argc, char *argv[])
{
  int i = compl((2 bitor 4) xor 4) bitand 3;
  bool b = not ((true or false) and true);

  b and_eq true;
  b or_eq false;
  b xor_eq true;
  b not_eq not b;

  return 0;
}

Yes, I have to admit it has made me confusing too . Anyway, I like C++, because it can always surprise me with something I did not even know possible and therefore stimulate my desire to continue studying and using it.

Anyway, e.g., compl is an alternative to the ~ operator. The others are explained here.

Michael

[280Z28]

Yes, I have to admit it has made me confusing too . Anyway, I like C++, because it can always surprise me with something I did not even know possible and therefore stimulate my desire to continue studying and using it.

Anyway, e.g., compl is an alternative to the ~ operator. The others are explained here.

Michael

No, no. compl is a way to get coworkers to  :x and then kill you. :lol:

[Michael]

No, no. compl is a way to get coworkers to  :x and then kill you. :lol:

Yes, it is a possible consequence .

Michael