#81 placement new

[Yordan]

Hi,

I'm a c++ programmer and I tried to port some of my
code to palm. Unfortunately my code it makes havy use
of STL. I'm trying build a light version of std::vector but it
requires placement new and I can't get it to compile.

following code:

char pmem[64];
new ((void*)pmem) SomeObject();

gives error message:
\test.cpp: In function `void f()':
<internal>:50: too many arguments to function `void *
operator new(long unsigned int)'
.\test.cpp:50: at this point in file

Kind Regards,
warjo

[John Marshall]

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So define your own placement new operator?

[Yordan]

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> So define your own placement new operator?
in the <new> header the global placement new definition is
fine. The problem is that the compiler doesn't actually see the
experssion "new (ptr) Object();" as a placement new. It thinks
it is a normal new. No matter how many placement new
operators I define it will continue to give error... (loook at the
error in my example)

-warjo

[Ken Bannister]

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user_id=803085

I have just started using placement new, and I cannot
recreate the original poster's error. The fragment below
compiles for me.

char testBuffer[64];
new((void*) testBuffer) String("test1");

However, when I omit "#include <new>" from the compilation
unit, I can recreate the error.

<internal>:60: too many arguments to function `void *
operator new(long unsigned int)'
../src/VectorBufferTest.cpp:60: at this point in file

Perhaps the include is the source of the trouble.