https://bugs.llvm.org/show_bug.cgi?id=40378
Bug ID: 40378
Summary: Failed template argument deduction for
std::initializer_list with T=std::complex<double>
Product: clang
Version: 8.0
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++'17
Assignee: unassignedclangb...@nondot.org
Reporter: stack...@users.sourceforge.net
CC: blitzrak...@gmail.com, erik.pilking...@gmail.com,
llvm-bugs@lists.llvm.org, richard-l...@metafoo.co.uk
Created attachment 21356
--> https://bugs.llvm.org/attachment.cgi?id=21356&action=edit
list-init-tmpl-arg-fail.cc
clang++ fails to infer the template argument std::complex<double> for
direct/copy list initialization of an std::initializer_list object. Current
versions of both g++ and msvc successfully compile:
https://godbolt.org/z/6dhO6e
#include <cstdio>
#include <initializer_list>
#include <complex>
using namespace std::literals;
#ifdef _MSC_VER
#define __pfunc__ __FUNCSIG__
#else
#define __pfunc__ __PRETTY_FUNCTION__
#endif
#define TRACE() fprintf(stdout, "%s:%u: %s\n", __FILE__, __LINE__, __pfunc__)
template<class T>
void fun(std::initializer_list<T> const &il) { TRACE(); }
int main() {
std::initializer_list il = {1.0+2.0i, 1.0+0.0i, 3.4+4.3i}; // error
fun(il);
}
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