Bug 5533 – Regression(2.051, Linux only): segv: -gc, associative arrays, const pointers to self

Regression from 2.050 to 2.051 (Linux). When compiling with -gc -c, the testcase below will cause 2.051 to segv. File compiles OK on 2.050. File also compiles just fine (even on 2.051) if -gc is omitted. DMD produces expected link errors if you compile with only -gc argument. The key issues appear to be: - The foreach loop inside the function. - The parent pointer in Foo must be *BOTH* const and a pointer to its own type. If you make it non-const, or a pointer to something else, it works. TESTCASE: void DMD_BUG_WORKAROUND() // issue 3770 { /* if you don't have a dummy function like this in the module where a type * was declared, then dmd won't give it to you when you use it in an * associative array elsewhere, and you'll get link errors. */ Foo tmp; string dummy; foreach(name; tmp.table.keys) dummy ~= name; } struct Foo { const(Foo) *parent; FooElem*[string] table; }; struct FooElem { };

This works for me on win32 with dmd head (2.054). Can anybody reproduce this on linux with the current dmd?

I tested this on 2.054 (Linux: Fedora 14 x86 32-bit), and the problem still exists.

I built dmd and ran it under gdb, and it appears that the problem is infinite recursion in the function dwarf_typidx(TYPE*).

*** This issue has been marked as a duplicate of issue 7127 ***