Missing return value of a function

[Allerdyce.John]

Hi,

In my code, I have a function which has a return value in the
declaration:

bool myFunction( int a) {
// my implmentation

}

how come the code still compile even if I don't have a return value
(neither true/false). How can I enforce that ? i am using gcc on
linux.

Thank you.

[Victor Bazarov]

Al************@gmail.com wrote:

In my code, I have a function which has a return value in the
declaration:

bool myFunction( int a) {
// my implmentation

}

how come the code still compile even if I don't have a return value
(neither true/false). How can I enforce that ? i am using gcc on
linux.

Ask in gnu.gcc.help (or gnu.g++.help). Often, if your compiler gives
you a warning, you can try "treat warnings as errors", and jack the
warning level all the way up.

Generally speaking, falling off the end of a function that is declared
as returning a value has _undefined_ behaviour, and no diagnostic is
required.

V
--
Please remove capital As from my address when replying by mail

[Andre Kostur]

Al************@gmail.com wrote in news:1141420868.941649.78800
@t39g2000cwt.googlegroups.com:

Hi,

In my code, I have a function which has a return value in the
declaration:

bool myFunction( int a) {
// my implmentation

}

how come the code still compile even if I don't have a return value
(neither true/false). How can I enforce that ? i am using gcc on
linux.

Ask in a newsgroup dedicated to your compiler. See what you can find by
looking through your compiler's documentation.

[BobR]

Victor Bazarov wrote in message ...

Al************@gmail.com wrote:

In my code, I have a function which has a return value in the
declaration:

bool myFunction( int a) {
// my implmentation
}

how come the code still compile even if I don't have a return value
(neither true/false). How can I enforce that ? i am using gcc on
linux.

Ask in gnu.gcc.help (or gnu.g++.help). Often, if your compiler gives
you a warning, you can try "treat warnings as errors", and jack the
warning level all the way up.

OP:
try -Wall
which includes:

-Wreturn-type
Warn whenever a function is defined with a return-type that defaults to int.
Also warn about any return statement with no return-value in a function whose
return-type is not void.
For C++, a function without return type always produces a diagnostic message,
even when -Wno-return-type is specified. The only exceptions are main and
functions defined in system headers.

--
Bob R
POVrookie