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Matthias Hofmann · Guest

Hello!

I am writing a memory tracker which associates pointers with some allocation
information. The name of the source file will be part of that information,
which is predefined by the __FILE__ macro, as described in 16.8/1.

However, I found no information about the lifetime of this string literal,
so I don't know if it's safe to use a const char*:

struct Info
{
const char* file;
...
};

As the allocation information can be accessed any time from anywhere in the
programm, it would probably be better to use a std::string, but that
involves copying __FILE__, which might have some bad influence on the
performance. This is not that bad, as I am planning to track the memory only
in debug builds and switch it off in the release version, but I also would
not mind if I could avoid that problem.

Can anyone please tell me more about the lifetime of __FILE__?

--
Matthias Hofmann
Anvil-Soft, CEO
http://www.anvil-soft.com - The Creators of Klomanager
http://www.anvil-soft.de - Die Macher des Klomanagers

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Kurt Stege · Guest

Matthias Hofmann wrote:

srez · Guest

Matthias,

In C++ string literals are defined to have static storage duration
(2.13.4 /1).

Regards,
srez

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