• d-bugmail puremagic.com (30/30) Jul 01 2021 https://issues.dlang.org/show_bug.cgi?id=22096

d-bugmail puremagic.com writes:

https://issues.dlang.org/show_bug.cgi?id=22096

          Issue ID: 22096
           Summary: Can not get global struct member addresses at compile
                    time
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: dmd
          Assignee: nobody puremagic.com
          Reporter: dbugs yhzar.kellerspeicher.ch

Hi!

This report is based on the forum thread:
https://forum.dlang.org/thread/cjbjcuzsefvjryrjlflf forum.dlang.org

I'm currently investigating why I can not take the address of a static
struct-element at compile time.

    struct Foo{
        int bar;
    }
    __gshared Foo foo;
    void *foo_ptr = &foo; // Works
    void *bar_ptr = &foo.bar; // Error: static variable `foo` cannot be read at
compile time

The D-Compiler passes the relocation of *foo_ptr down to the linker, but
relocations plus an offset seem to not work. If I'd have to guess I'd say that
this is a side-effect of all member accesses possibly being function calls.

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