[Issue 879] support for --gc-sections

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=879

David Nadlinger <code at klickverbot.at> changed:

           What    |Removed                     |Added
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           Keywords|pull                        |

--- Comment #21 from David Nadlinger <code at klickverbot.at> ---
There is an additional complication: ld.bfd turns __bss_start/_end into local
symbols when passing --gc-sections. This breaks the module collision check in
druntime, as discussed here:
http://forum.dlang.org/post/ferkvfamznsuhonokhco@forum.dlang.org. The linked
discussion is about LDC in particular, but from a few preliminary tests, DMD
also seems to be affected.

The root cause for this behavior seems to be this change in binutils 2.19:
https://sourceware.org/bugzilla/show_bug.cgi?id=13683. It's hard to tell
whether this is a bug in ld or not, but either way we'll have to live with it.

ld.gold is not affected.

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