[llvm-bugs] [Bug 36915] New: [possible regression] Simple complex numbers expression fails

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=36915

            Bug ID: 36915
           Summary: [possible regression] Simple complex numbers
                    expression fails
           Product: clang
           Version: 6.0
          Hardware: PC
                OS: FreeBSD
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: yuri at tsoft.com
                CC: dgregor at apple.com, llvm-bugs at lists.llvm.org

Created attachment 20132
  --> https://bugs.llvm.org/attachment.cgi?id=20132&action=edit
testcase.cpp

The attached testcase worked in clang4 and clang5 fine, but it breaks in
clang6:

c.cpp:9:32: error: implicit conversion from '_Complex int' to 'double' is not
permitted in C++
  complex_t p = cos (omega) +  _I * sin (omega);
                               ^~
c.cpp:6:25: note: expanded from macro '_I'
#define _I ((complex_t)(1i))
            ~           ^~


Found this on FreeBSD 12 in one port.

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