Bug 16278 – [REG2.067] undefined reference when class template is instantiated only in 'is' expression

test.d: ---- class A() { static struct S { A a; } } enum e = is(A!()); void main() {} ---- `dmd test.d`: ---- test.o:(.data._D25TypeInfo_xC4test6__T1AZ1A6__initZ+0x10): undefined reference to `_D4test6__T1AZ1A7__ClassZ' collect2: error: ld returned 1 exit status Error: linker exited with status 1 ---- Works with 2.066. Fails since 2.067. Works with the newer versions when -allinst is given.

Covered by DMD's PR https://github.com/dlang/dmd/pull/6351

Commits pushed to stable at https://github.com/dlang/dmd https://github.com/dlang/dmd/commit/bdf0df926f90b9243932e2ff76f79de644224b26 Fix issue #16278 - Do not emit TypeInfo for speculative instantiations. https://github.com/dlang/dmd/commit/d7101f3e636d7aa970ddbab8623e5bebd7b96212 Merge pull request #6351 from LemonBoy/b16278 Fix issue #16278 - Do not emit TypeInfo for speculative instantiations.

Commits pushed to master at https://github.com/dlang/dmd https://github.com/dlang/dmd/commit/bdf0df926f90b9243932e2ff76f79de644224b26 Fix issue #16278 - Do not emit TypeInfo for speculative instantiations. https://github.com/dlang/dmd/commit/d7101f3e636d7aa970ddbab8623e5bebd7b96212 Merge pull request #6351 from LemonBoy/b16278

Commits pushed to newCTFE at https://github.com/dlang/dmd https://github.com/dlang/dmd/commit/bdf0df926f90b9243932e2ff76f79de644224b26 Fix issue #16278 - Do not emit TypeInfo for speculative instantiations. https://github.com/dlang/dmd/commit/d7101f3e636d7aa970ddbab8623e5bebd7b96212 Merge pull request #6351 from LemonBoy/b16278