https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104317
Bug ID: 104317
Summary: D language: rt.config module doesn't work as expected
in GDC 9/10 (multiple definition linker error)
Product: gcc
Version: 10.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: d
Assignee: ibuclaw at gdcproject dot org
Reporter: siarhei.siamashka at gmail dot com
Target Milestone: ---
The rt.config module provides a set of configuration variables with various
ways to override them as documented here:
https://dlang.org/phobos/rt_config.html
The following small application can be used to test it:
import std.stdio;
extern(C) __gshared bool rt_cmdline_enabled = false;
void main(string[] args) { writeln(args); }
== Expected correct result: ==
$ gdc test.d && ./a.out --DRT-this-cmdline-argument-should-not-be-filtered-out
["./a.out", "--DRT-this-cmdline-argument-should-not-be-filtered-out"]
== Got: ==
$ gdc-9.3.0 test.d
/usr/lib/gcc/x86_64-pc-linux-gnu/9.3.0/../../../../x86_64-pc-linux-gnu/bin/ld:
/usr/lib/gcc/x86_64-pc-linux-gnu/9.3.0/libgdruntime.a(lt8-config.o):/var/tmp/portage/sys-devel/gcc-9.3.0-r1/work/gcc-9.3.0/libphobos/libdruntime/rt/config.d:48:
multiple definition of `rt_cmdline_enabled'; /tmp/ccvDzGs7.o:(.bss+0x0): first
defined here
collect2: error: ld returned 1 exit status
$ gdc-12.0.1 test.d && ./a.out
--DRT-this-cmdline-argument-should-not-be-filtered-out
["./a.out", "--DRT-this-cmdline-argument-should-not-be-filtered-out"]
