Bug 12984 – [REG2.068a] ICE on forward reference of derived class from other instantiated class

--- cat > test.d << code template Tpl() {static if(true) enum Tpl = true;} void f()() if(Tpl!()); class B {alias MyD = D!int;} // 4 class C : B {} // 5 class D(T) {alias MyE = E!float;} class E(T) : D!int { void m() { auto c = new C; // 12 f(); // 13 } } code dmd -c -o- test.d --- test.d(2): Error: Cannot interpret Tpl!() at compile time test.d(7): Error: template instance test.E!float error instantiating test.d(4): instantiated from here: D!int --- Works when lines 4 and 5 are swapped. Works when lines 12 and 13 are swapped. Possibly related to issue 12983.

fixed by https://github.com/D-Programming-Language/dmd/commit/75ffb6305b38edb05e4f132de7795e93df75a579

The test case fails again. Segfaults now. The test code can be reduced to this for the segfault: --- cat > test.d << code class B {alias MyD = D!int;} class C : B {} class D(T) {alias MyE = E!float;} class E(T) : D!int { void m() {new C;} } code dmd -c -o- test.d --- Segmentation fault (core dumped) --- (Re-)introduced by https://github.com/D-Programming-Language/dmd/commit/a7bdba471111f09f7dba2fbbc6a3d91d8ba110e7 https://github.com/D-Programming-Language/dmd/pull/4457

(In reply to Nils from comment #2) > The test case fails again. Segfaults now. > > The test code can be reduced to this for the segfault: > --- > cat > test.d << code > class B {alias MyD = D!int;} > class C : B {} > class D(T) {alias MyE = E!float;} > class E(T) : D!int > { > void m() {new C;} > } > code > dmd -c -o- test.d > --- > Segmentation fault (core dumped) > --- > > (Re-)introduced by > https://github.com/D-Programming-Language/dmd/commit/ > a7bdba471111f09f7dba2fbbc6a3d91d8ba110e7 > https://github.com/D-Programming-Language/dmd/pull/4457 https://github.com/D-Programming-Language/dmd/pull/4537

Commits pushed to master at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/ec6df46675f8de0110c6cdc7a85d4066310a91fa fix Issue 12984 - ICE on forward reference of derived class from other instantiated class https://github.com/D-Programming-Language/dmd/commit/2a83a40246dee806b04465bd424d41ac9f78349f Merge pull request #4537 from 9rnsr/fix12984 [REG2.068a] Issue 12984 - ICE on forward reference of derived class from other instantiated class

Commit pushed to master at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/302d42186a30452ddb0c7bd02f4f8c682a8f4c93 [Fix] Fix incorrect test for issue 12984. Causing commit: 8efa502a209c64a75f682956cab0b3647737c614.

Commits pushed to stable at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/ec6df46675f8de0110c6cdc7a85d4066310a91fa fix Issue 12984 - ICE on forward reference of derived class from other instantiated class https://github.com/D-Programming-Language/dmd/commit/2a83a40246dee806b04465bd424d41ac9f78349f Merge pull request #4537 from 9rnsr/fix12984 https://github.com/D-Programming-Language/dmd/commit/302d42186a30452ddb0c7bd02f4f8c682a8f4c93 [Fix] Fix incorrect test for issue 12984.