Corner-case in which “Remove unnecessary parentheses” breaks the code

[Timwi]

Version Used: Visual Studio 17.14.9 Preview 1.0

Steps to Reproduce:

1. Write the code: var p = new List<int[]> { ([]) };
2. Press Ctrl+. — menu appears with “Remove unnecessary parentheses” suggestion
3. Apply “Remove unnecessary parentheses” suggestion

Expected Behavior:

The suggestion should not be shown because it is not applicable because the parentheses are not unnecessary.

Actual Behavior:

The suggestion changes the code to var p = new List<int[]> { [] };, which does not compile (“Syntax error; value expected”).

[MihuBot]

I'm a bot. Here are possible related and/or duplicate issues (I may be wrong):

• IDE0047: Removing parentheses around a int array that is in a list, creates code that can not be compiled #78331
• IDE0047 suggest removing parentheses, which leads to invalid code #80082

[CyrusNajmabadi]

Fixed with #78336