[cfe-dev] Prevent folding of integer constant expressions in AST

[Benedikt Lukas Huber via cfe-dev]

Hi,

I wanted to bump this question. Maybe someone has an idea how to solve this.

Thank you and best regards,
Benedikt

________________________________________
From: Benedikt Lukas Huber <benedikt.lukas.huber at catena.tech>
Sent: Thursday, January 16, 2020 5:21 PM
To: via cfe-dev
Subject: Prevent folding of integer constant expressions in AST

Hi,

I am using ParseAST to traverse the AST provided by clang, using a ConstDeclVisitor, a ConstStmtVisitor and a TypeVisitor.
My problem now is that for expressions such as

char main_foo[sizeof(int) == sizeof(char) ? 5 : 8];

I cannot access the expression for the array size, from VisitConstantArrayType(). I can only access the folded numerical value, in this case 8.
Is there a way to access the unfolded expression? Or disable folding of integer constant expressions all together?
I am using clang 6.0.

Thank you and best regards,
Benedikt