WTF: dmd 2.066 vs. dmd 2.067 really dangerous code breakage

[Daniel Kozak via Digitalmars-d]

This code compile fine under both versions:

dmd (2.066, -debug -d):
OK
dmd (2.067, -debug -d):
core.exception.AssertError@main.d(24): Assertion failure
----------------
./main() [0x46413f]
./main(_Dmain+0x86) [0x449996]
./main(_D2rt6dmain211_d_run_mainUiPPaPUAAaZiZ6runAllMFZ9__lambda1MFZv+0x1f) 
[0x467d53]
./main(void rt.dmain2._d_run_main(int, char**, extern (C) int 
function(char[][])*).tryExec(scope void delegate())+0x2a) 
[0x467ca6]
./main(void rt.dmain2._d_run_main(int, char**, extern (C) int 
function(char[][])*).runAll()+0x30) [0x467d0c]
./main(void rt.dmain2._d_run_main(int, char**, extern (C) int 
function(char[][])*).tryExec(scope void delegate())+0x2a) 
[0x467ca6]
./main(_d_run_main+0x1dc) [0x467c20]
./main(main+0x17) [0x464157]
/usr/lib/libc.so.6(__libc_start_main+0xf0) [0x7f4b8d440800]