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More information about inline function "used but never defined" error?
From: |
John Pye |
Subject: |
More information about inline function "used but never defined" error? |
Date: |
14 Feb 2005 21:31:02 -0800 |
Hi there
I have a class which is giving me some trouble. I need G++ to give me
a more complete compiler error message, rather than the current
warning message.
Here is a code snippet:
--------------------
template< int M ,int L=0 ,int T=0 ,int K=0 ,int I=0 >
class Units {
...
// scalar typecast
inline operator double() const;// not defined here because
// only unitless can cast to double
...
};
...
// only defined for unitless types
inline Units<0,0,0,0,0>::operator double() const {
return d_val;
}
--------------------
You can see the above class in its entirety at
http://cvs.sourceforge.net/viewcvs.py/freesteam/freesteam/units.h?rev=1.14&view=auto
When I try to the the first (undefined) cast to double, I get the
following compiler warning:
------------------
freesteam/units.h:75: warning: inline function `Units<M, L, T, K,
I>::operator double() const [with int M = 1, int L = 2, int T =
-3, int K = 0, int I = 0]' used but never defined
------------------
I would like to get some more information from the compiler about
where this call is coming from, rather than just where the definition
is lacking.
Can anyone suggest a way that I can use G++ which will give me more
information about the location of this attempted cast to double?
For a more complete example that throws this error, see
http://cvs.sourceforge.net/viewcvs.py/freesteam/freesteam/units-04.cfail.cpp?rev=1.1
Cheers
JP
- More information about inline function "used but never defined" error?,
John Pye <=