On Tuesday, 21 November 2017 at 19:22:47 UTC, Anonymouse wrote:
Compiling a debug dmd and running the build command in gdb, it
seems to be a stack overflow at ddmd/dtemplate.d:6241,
TemplateInstance::needsCodegen().
After a lot of trial and error I managed to find /a/ line which
lets it compile under -b plain and release.
void colour(Sink, Codes...)(auto ref Sink sink, const Codes codes)
{
// Sink is a LockingTextWriter or an Appender!string
// Codes is a tuple of named enum members
foreach (const code; codes)
{
import std.conv : to;
if (++numCodes > 1) sink.put(';');
sink.put((cast(size_t)code).to!string); // <--
}
Change size_t to uint and it compiles, keep it size_t and the
compiler segfaults. Tested on two machines, both running
up-to-date Arch linux, both with dmd and ldc.
The bug is too ephemeral to reduce well, if a thing like order of
arguments matters.
If this is an emergent property of the rest of the program, and
the size_t merely fells the house of cards, is it even worth
reporting when I can't reduce it?
