Hi,
I'm sure I've run into this before, but can't remember what the
problem was. The symptom is that the optimiser is removing
code I consider valid, leaving certain logic non-functional.
Essentially I have a function that tests a variety of conditions,
setting a flag to false if any condition fails. The function then
ends with the following lines:
if (TestsOK)
{
return errNone;
} else
{
return gInfo.ErrorCode;
}
My problem is that with dead code elimination on, the test is
ignored and errNone is returned regardless of the state of the
TestsOK variable (which *is* false when this function exits).
Leaving aside any style issues for the moment :-), can anyone
suggest why this is happening? The code to set the flag to true
and false in different places seems to be compiling in (although
I haven't checked the assembler yet) the compiler simply seems
to consider the if statement to be dead code.
Chris Tutty
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