#2758: icpc 19 fails to compile AMReX

Reporter: Roland Haas Status: new Milestone: Version: Type: bug Priority: major Component: EinsteinToolkit thorn

AMReX contains code like this:

```c++ #include <string_view>

static constexpr std::string_view parser_f2_s[] = { "pow", "atan2", "gt", "lt", "geq", "leq", "eq", "neq", "and", "or", "heaviside", "jn", "min", "max", "fmod" }; ```

which fails to compile with “icpc (ICC) 19.1.3.304 20200925” with

``` $ icpc -gxx-name=g++ -std=gnu++17 -c dummy.cc dummy.cc(4): error: expression must have a constant value { ^ dummy.cc(3): note: attempt to access run-time storage static constexpr std::string_view parser_f2_s[] = ^

compilation aborted for dummy.cc (code 2) ```

a workaround is to manually count the vector elements:

``` static constexpr std::string_view parser_f2_s[15] = ```

which compiles fine. g++ is gcc-9.3.0, which itself would compile the file fine (so it is a compiler issue, not a STL issue). Can be tested on db1.

-- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2758/icpc-19-fails-to-c...