https://llvm.org/bugs/show_bug.cgi?id=29123
Bug ID: 29123
Summary: std::tuple compilation errors with implicit conversion
constructors
Product: libc++
Version: 3.9
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected]
Classification: Unclassified
Created attachment 17037
--> https://llvm.org/bugs/attachment.cgi?id=17037&action=edit
compilation error message
I encountered this error when trying to use libcxx from 3.9 release and trunk
from around August 1st. The same code works with 3.8 release
Repro: compile following example with libc++:
clang -c -std=c++14 repro.cpp -stdlib=libc++
// repro.cpp
// this is minimized code from folly library
#include<tuple>
template<class Value>
struct Optional {
// implicit
Optional(const Value& newValue) {}
};
struct dynamic {
// implicit
template<class T> dynamic(T t);
};
Optional<std::tuple<dynamic>> get();
void test() { auto x = get(); }
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