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mutable syntax question (solved)

Started by 255 Dec 2, 2005 at 12:28 PM 4 replies 1.1k views

Original Post

Dec 2, 2005 at 12:28 PM

How do I declare a mutable pointer to a const object in C++? gcc 4 seems to accept const Obj mutable *p; but gcc 3.3 says symbols.hpp:369: error: declaration does not declare anything symbols.hpp:369: error: syntax error before `mutable' [Edited by - 255 on December 2, 2005 12:55:21 PM]

Roboguy

Dec 2, 2005 at 12:33 PM

IIRC, const Obj* p;. See this.

255

Author

255

Dec 2, 2005 at 12:37 PM

const Obj * mutable p; does not work either (on either gcc version).

RDragon1

206

RDragon1

Dec 2, 2005 at 12:47 PM

mutable const Obj* p;, just like mutable int i;

255

Author

255

Dec 2, 2005 at 12:54 PM

Ok, thanks. The way my editor colored mutable made me assume it behaved syntactically like const while it behaves more like virtual. Any idea if my original form (const Obj mutable *p;) is also valid since gcc 4 accepted it?

moeron

Dec 2, 2005 at 1:25 PM

I dunno about the actual standard but MSVC 2003/05 only accept mutable const foo* pPtr;

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