http://llvm.org/bugs/show_bug.cgi?id=18870
Bug ID: 18870
Summary: string-literals not handled correctly in
linkage-specification
Product: clang
Version: 3.4
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Created attachment 12078
--> http://llvm.org/bugs/attachment.cgi?id=12078&action=edit
testcase.cpp
extern R"(C)" int a;
extern "C" "++" int b;
int main () {
}
---------------------------------------------------
foo.cpp:1:8: error: unknown linkage language
extern R"(C)" int a;
^
foo.cpp:2:12: error: unknown linkage language
extern "C" "++" int b;
^
---------------------------------------------------
As specified in [dcl.link]p2:
Linkage (3.5) between C++ and non-C++ code fragments can be achieved
using a linkage-specification:
linkage-specification:
extern string-literal { declaration-seq_opt }
extern string-literal declaration
`string-literal` is defined in [lex.string]:
string-literal:
encoding-prefix_opt "s-char-sequence_opt"
encoding-prefix_optR raw-string
concatenation of string-literals is defined under [lex.string]p13:
In translation phase 6 (2.2), adjacent string literals are concatenated.
---------------------------------------------------
gcc, icc, and msvc all (correctly) accept the provided snippet.
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