dotnet/roslyn

Cannot use index initializer with fixed sized buffer

Ouverte

#39 632 ouverte le 1 nov. 2019

 (9 commentaires) (0 réaction) (0 personne assignée)C# (4 257 forks)batch import
Area-CompilersBughelp wanted

Métriques du dépôt

Stars
 (20 414 étoiles)
Métriques de merge PR
 (Merge moyen 6j 17h) (256 PRs mergées en 30 j)

Description

You currently cannot use an index initializer to populate a fixed-sized buffer. For example:

struct Body
{
    public fixed double V[3];
}

new Body
{
	V = 
	{
		[0] = 1,
		[1] = 2,
		[2] = 3
	}
};

emits on V = an error:

error CS1666: You cannot use fixed size buffers contained in unfixed expressions. Try using the fixed statement.

Firstly, if this is intended behavior, I would at least improve the error message, especially since trying to pin Body.V emits

error CS0213: You cannot use the fixed statement to take the address of an already fixed expression

so you cannot even resolve this issue in the way the error message suggests. However, I think that it should work as expected (and I believe that it can be supported within the current parameters of the language).

Guide contributeur