[Issue 22722] ImportC: parser doesn’t understand `asm volatile` syntax

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22722

--- Comment #3 from Walter Bright <bugzilla at digitalmars.com> ---
> If __GNUC__ is not defined it defines it as do { } while(0)

__GNUC__ is for compiling with gcc. It's not a good idea for ImportC to pretend
to be gcc.

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