[Bug d/98457] [d] writef!"%s" doesn't work with MonoTime / SysTick

["witold.baryluk+gcc at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98457

--- Comment #1 from Witold Baryluk <witold.baryluk+gcc at gmail dot com> ---
Godbolt link: https://godbolt.org/z/q3bzhP

with gcc trunk 20201217 and a bit more diagnostic

/opt/compiler-explorer/gcc-trunk-20201227/lib/gcc/x86_64-linux-gnu/11.0.0/include/d/core/time.d:2405:16:
error: static variable _ticksPerSecond cannot be read at compile time
 2405 |         return _ticksPerSecond[_clockIdx];
      |                ^
/opt/compiler-explorer/gcc-trunk-20201227/lib/gcc/x86_64-linux-gnu/11.0.0/include/d/core/time.d:2418:99:
note: called from here: ticksPerSecond()
 2418 |             return "MonoTime(" ~ signedToTempString(_ticks, 10) ~ "
ticks, " ~ signedToTempString(ticksPerSecond, 10) ~ " ticks per second)";
      |                                                                        
                          ^
/opt/compiler-explorer/gcc-trunk-20201227/lib/gcc/x86_64-linux-gnu/11.0.0/include/d/core/time.d:2418:98:
note: called from here: signedToTempString(ticksPerSecond(), 10u)
 2418 |             return "MonoTime(" ~ signedToTempString(_ticks, 10) ~ "
ticks, " ~ signedToTempString(ticksPerSecond, 10) ~ " ticks per second)";
      |                                                                        
                         ^
/opt/compiler-explorer/gcc-trunk-20201227/lib/gcc/x86_64-linux-gnu/11.0.0/include/d/std/format.d:3353:28:
note: called from here: val.toString()
 3353 |         put(w, val.toString());
      |                            ^
/opt/compiler-explorer/gcc-trunk-20201227/lib/gcc/x86_64-linux-gnu/11.0.0/include/d/std/format.d:3353:12:
note: called from here: put(w, val.toString())
 3353 |         put(w, val.toString());
      |            ^
/opt/compiler-explorer/gcc-trunk-20201227/lib/gcc/x86_64-linux-gnu/11.0.0/include/d/std/format.d:3672:21:
note: called from here: formatObject(w, val, f)
 3672 |         formatObject(w, val, f);
      |                     ^
/opt/compiler-explorer/gcc-trunk-20201227/lib/gcc/x86_64-linux-gnu/11.0.0/include/d/std/format.d:568:28:
note: called from here: formatValue(w, _param_2, spec)
  568 |                 formatValue(w, args[i], spec);
      |                            ^
/opt/compiler-explorer/gcc-trunk-20201227/lib/gcc/x86_64-linux-gnu/11.0.0/include/d/std/format.d:5767:28:
note: called from here: formattedWrite(w, fmt, _param_1)
 5767 |     auto n = formattedWrite(w, fmt, args);
      |                            ^
/opt/compiler-explorer/gcc-trunk-20201227/lib/gcc/x86_64-linux-gnu/11.0.0/include/d/std/format.d:5729:16:
note: called from here: format("%s", MonoTimeImpl(0L))
 5729 |         .format(fmt, Args.init);
      |                ^
/opt/compiler-explorer/gcc-trunk-20201227/lib/gcc/x86_64-linux-gnu/11.0.0/include/d/std/format.d:5733:2:
note: called from here: (*function () => null)()
 5733 | }();
      |  ^
/opt/compiler-explorer/gcc-trunk-20201227/lib/gcc/x86_64-linux-gnu/11.0.0/include/d/std/stdio.d:3754:15:
error: template instance std.format.checkFormatException!("�}�",
MonoTimeImpl!cast(ClockType)0) error instantiating
 3754 |     alias e = checkFormatException!(fmt, A);
      |               ^
<source>:4:14: note: instantiated from here: writef!("%s",
MonoTimeImpl!cast(ClockType)0)
    4 |   writef!"%s"(MonoTime.currTime());
      |              ^
/opt/compiler-explorer/gcc-trunk-20201227/lib/gcc/x86_64-linux-gnu/11.0.0/include/d/std/stdio.d:3755:5:
note: while evaluating: static assert(!e)
 3755 |     static assert(!e, e.msg);
      |     ^
Compiler returned: 1