ldc2 fails on use of %,d format specifier

[russel]

On Debian Sid, using dmd 2.076 installed by packaging from D-Apt, the code:

import std.stdio: writefln;

int main() {
	writefln("%,d", 10_000_000);
	return 0;
}

compiles and executes fine:

|> dmd integer_format.d
|> integer_format
10,000,000

The same code using ldc 1.4.0 from the Debian repository:

|> ldc2 integer_format.d
|> integer_format
std.format.FormatException@/usr/lib/ldc/x86_64-linux-gnu/include/d/std/format.d(1744): integral
----------------
??:? pure @safe bool std.exception.enforceEx!(std.format.FormatException).enforceEx!(bool).enforceEx(bool, lazy immutable(char)[], immutable(char)[], ulong) [0xfe00b0d]
??:? @safe void std.format.formatValue!(std.stdio.File.LockingTextWriter, int, char).formatValue(std.stdio.File.LockingTextWriter, int, ref const(std.format.FormatSpec!(char).FormatSpec)) [0xfe0055e]
??:? void std.format.formatGeneric!(std.stdio.File.LockingTextWriter, int, char).formatGeneric(std.stdio.File.LockingTextWriter, const(void)*, ref const(std.format.FormatSpec!(char).FormatSpec)) [0xfe001fa]
??:? [0xfe00042]
??:? [0xfdff81c]
??:? [0xfdff76b]
??:? [0xfdff721]
??:? _D2rt6dmain211_d_run_mainUiPPaPUAAaZiZ6runAllMFZ9__lambda1MFZv [0x9a77190e]
??:? void rt.dmain2._d_run_main(int, char**, extern (C) int function(char[][])*).tryExec(scope void delegate()) [0x9a77184d]
??:? _d_run_main [0x9a771744]
??:? [0xfe0c644]
??:? __libc_start_main [0x99a0c2e0]
??:? [0xfdff619]

[thewilsonator]

1.4.0 is based on 2.074, does this work with dmd using that front end version?

[joakim-noah]

No, it doesn't, only with dmd 2.075.1. Russel, I suggest you just wait till the upcoming 1.5 release.

[kinke]

... and my forum reply hinting at a likely Phobos mismatch was apparently in vain. :/