https://bugs.llvm.org/show_bug.cgi?id=46714
Bug ID: 46714
Summary: Diagnostic enhancement: "auto" in lambda expression
under -std=c++11
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Frontend
Assignee: unassignedclangb...@nondot.org
Reporter: haoxi...@gmail.com
CC: llvm-bugs@lists.llvm.org, neeil...@live.com,
richard-l...@metafoo.co.uk
Hi, all.
"auto" used in lambda expression is a c++14 extension, but clang doesn't emit
the appropriate diagnostic message about it.
For example,
$cat test.cc
int main(){
auto var = [](auto){};
return 0;
}
$clang++ -std=c++11 -c test.cc
test.cc:2:19: error: 'auto' not allowed in lambda parameter
auto var = [](auto){};
^~~~
1 error generated.
I guess clang should give a more specific diagnostic about this like GCC.
$g++ -std=c++11 -c test.cc
test.cc: In function ‘int main()’:
test.cc:2:19: error: use of ‘auto’ in lambda parameter declaration only
available with ‘-std=c++14’ or ‘-std=gnu++14’
2 | auto var = [](auto){};
| ^~~~
Just a small enhancement I guess, please understand if anything I stated is
unsuitable.
Thanks,
Haoxin
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