[dmd-internals] [D-Programming-Language/dmd] 7daa39: fix Issue 8939 - ICE(glue.c) on passing by ref sta...

[Rainer Schuetze]

On 11/15/2012 3:46 AM, GitHub wrote:
>    Branch: refs/heads/master
>    Home:   https://github.com/D-Programming-Language/dmd
>    Commit: 7daa39cc3ff563b50004cda86f4cdc1ae76c2888
>        https://github.com/D-Programming-Language/dmd/commit/7daa39cc3ff563b50004cda86f4cdc1ae76c2888
>    Author: k-hara <k.hara.pg at gmail.com>
>    Date:   2012-11-14 (Wed, 14 Nov 2012)
>
>    Changed paths:
>      M src/expression.c
>      M src/interpret.c
>      M src/optimize.c
>      M test/runnable/constfold.d
>
>    Log Message:
>    -----------
>    fix Issue 8939 - ICE(glue.c) on passing by ref statically initialized const/immutable variable
>
> Don't optimize an argument on ref parameter, even which can interpret at compile time.

This seems to have broken this code:


class C
{
	const int kIndex = 0;
	
	//////////////////////////////////////////////////////////////
	int refValue(V)(ref V var)
	{
		return var.length;
	}

	bool foo()
	{
		string str[2];
		return refValue(str[kIndex]) != 0;
	}
	
}


compiled with -O:

test.d(15): Error: variable kIndex used before set