[cfe-dev] bool type is represented as "_Bool" in the AST

[Aaron Ballman via cfe-dev]

On Tue, Jul 23, 2019 at 11:12 AM Pradeep Kumar <pradeepisro49 at gmail.com> wrote:
>
> Dear Aaron,
>     Why is it set to "_Bool" by default?

It seems to get its default value from LangOptions::Bool, which I
believe is set automatically by the language standard mode.

> How do I change it?

Usually you do this by making a copy of an existing PrintingPolicy
object and modifying it.

PrintingPolicy PP(WhateverPrintingPolicyYouWereUsing);
PP.Bool = 1;

Then pass PP into the call to getAsString().

~Aaron

>
> Regards,
> Pradeep
>
> On Tue, Jul 23, 2019 at 8:32 PM Aaron Ballman <aaron at aaronballman.com> wrote:
>>
>> On Tue, Jul 23, 2019 at 10:47 AM Pradeep Kumar via cfe-dev
>> <cfe-dev at lists.llvm.org> wrote:
>> >
>> > Dear Clang-developer community,
>> >     I am using libTooling to query information about the source. While querying the string representation of the bool type, I get "_Bool" string. I got the string from QualType::getAsString(). Should I be using another function to query the actual type or is it an expected behavior?
>> >
>> >     I don't get _Bool when dumping the ast except when I dump the QualType Node.
>>
>> The PrintingPolicy::Bool member dictates this behavior.
>>
>> ~Aaron
>>
>> >
>> > clang Version: 9.0
>> > LLVM Version: 9.0
>> >
>> > Regards,
>> > Pradeep
>> > _______________________________________________
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>> > cfe-dev at lists.llvm.org
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