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Tip of the Day
Language: C++
Expertise: All
Dec 22, 1998

Exception Specification is not Part of a Function's Type

An exception specification is not considered part of the type of a function. Therefore, you cannot declare two distinct functions that differ only in their exception specification:
 
void f(int) throw (Y);
void f(int) throw (Z); //error; redefinition of 'void f(int)'
For the same reason, declaring a typedef that contains an exception specification is also an error:
 
typedef void (*PF) (int) throw(Excexption); //compile time error
Danny Kalev
 
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