Bug 23515 – Named Enum of function SIGSEGFAULT

Found by me and maxter. I have a related problem in LDC: https://github.com/ldc-developers/ldc/issues/4282 This SIGSEGFAULTS: ```d enum Easing : void function(){identity = (){} } void main(){Easing.identity();} ``` This doesn't: ``` enum : void function(){identity = (){} } void main(){identity();} ```

As a workaround you can name the anonymous function and it works: ``` void fun() {} enum Easing : void function() { identity = &fun } void main() { Easing.identity(); } ``` This is just to unblock you, I'm looking now into how to make it work as is.

Hello RazvanN. The solution I'm currently using, is by using this templated style: ```d //TODO: Change (x) to (float x) for not generating templates needlessly enum HipEasing : float function(float x) { identity = (x) => x, } ``` I hope it may help in the bug lookup

It looks like `identity` is being set to null, and the lambda is ignored.

Here's the generated code (renaming main() to test()): _D5test16Easing9__lambda2MFNaNbNiNfZv: 0000: C3 ret // the lambda _D5test14testFZv: 0000: 55 push RBP 0001: 48 8B EC mov RBP,RSP 0004: B9 00 00 00 00 mov ECX,0 0009: 31 C0 xor EAX,EAX 000b: 48 FF D0 call RAX 000e: 5D pop RBP 000f: C3 ret Calling null will definitely seg fault.

The difference between identity being an (){} vs &fun is the first is a direct function call the second is an address of a function. I'm not sure yet if the former should be an error, or can be made to work. Having an enum of function names has never occurred to me.

@WalterBright created dlang/dmd pull request #16117 "bugzilla Issue 23515 - Named Enum of function SIGSEGFAULT " mentioning this issue: - bugzilla Issue 23515 - Named Enum of function SIGSEGFAULT https://github.com/dlang/dmd/pull/16117

dlang/dmd pull request #16117 "fix bugzilla Issue 23515 - Named Enum of function SIGSEGFAULT " was merged into master: - e957b77fb7d5c250554c10b8c16bb5112b22f07d by Walter Bright: fix bugzilla Issue 23515 - Named Enum of function SIGSEGFAULT https://github.com/dlang/dmd/pull/16117