const reference pass as argument?

Hey, I have class Timeprice, and the following code is

Code:

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vector<Timeprice> data;
void f(const Timeprice& tp);

f(data[0]); // after executing operator[], it exit immediately, it didn't go into the function f() at all

Timeprice aa = data[i];
Timeprice& bb = data[i];
f(aa);
f(bb); //both call is respected

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can anybody explain to me why the call f(data[0]) didn't execute? Thanks!

have you placed a breakpoint in the f function?

Sounds to me operator[] crashes. Probably because of a segfault or something similar.

Edit: Didn't read the code properly. Makes no sense, unless the vector is completely empty...

Quote:

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Originally Posted by EVOEx

Sounds to me operator[] crashes. Probably because of a segfault or something similar.

Edit: Didn't read the code properly. Makes no sense, unless the vector is completely empty...

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Well, if you take the posted code at face value, the vector IS empty there.

Quote:

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Originally Posted by brewbuck

Well, if you take the posted code at face value, the vector IS empty there.

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Well, I do assume these are just snippets. Otherwise the other two should probably crash as well (even though it may not, obviously, as the behaviour is undefined).

For me it sounds as forgetting to press F11 once again after exiting the operator[]