[llvm-bugs] [Bug 31966] New: libc++ does not support explicit instantiation of valarray transcendentals

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=31966

            Bug ID: 31966
           Summary: libc++ does not support explicit instantiation of
                    valarray transcendentals
           Product: libc++
           Version: 4.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: All Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: asiri.rathnayake at arm.com
                CC: llvm-bugs at lists.llvm.org, mclow.lists at gmail.com

The following causes a compile error:

------------>8------------
#include <valarray>

int main() {
  std::valarray<double> v00;
  std::sinh<double>(v00);
  return 0;
}
------------8<------------

Whereas the following use is supported:

------------>8------------
#include <valarray>

int main() {
  std::valarray<double> v00;
  std::sinh(v00);
  return 0;
}
------------8<------------

The former is valid as per the standard (Section 26.6.3.3). libstdc++ (4.8)
supports both forms.

There is a patch to fix this at: https://reviews.llvm.org/D13289 (although it
may have bit-rotted a bit).

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