https://llvm.org/bugs/show_bug.cgi?id=27113
Bug ID: 27113
Summary: MSVC-compat __identifier implementation incomplete
Product: clang
Version: unspecified
Hardware: PC
OS: Windows XP
Status: NEW
Severity: normal
Priority: P
Component: Frontend
Assignee: unassignedclangb...@nondot.org
Reporter: turkey...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
MSVC has a feature __identifier("symbolname") which doesn't seem to work in
Clang.
One common use of __identifier is for keywords; ie, __identifier(class), which
works, but it also supports string identifiers which I make fairly extensive
use of in large multi-language projects.
MSVC produces a warning with string identifiers, which you are instructed to
suppress.
This code should compile:
auto x = (__pragma(warning(suppress: 4483)) __identifier("??_7MyClass@@6B@"));
Since MSVC mangling uses characters that are invalid in C++ identifiers (ie,
'?' and '@'), this is a trick to refer to symbols that are un-name-able.
On a side note; in VS, the symbol resolution yields a typed symbol, and type
deduction is correctly performed for 'x' in this case.
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