https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99914
Bug ID: 99914
Summary: d: Template symbols not overridable by normal symbols
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: d
Assignee: ibuclaw at gdcproject dot org
Reporter: ibuclaw at gdcproject dot org
Target Milestone: ---
Currently, the following does not link:
extern(C) __gshared bool rt_cmdline_enabled = false;
Because the symbol conflicts with a template symbol of the same name in the D
runtime library.
template rt_cmdline_enabled()
{
pragma(mangle, "rt_cmdline_enabled")
__gshared bool rt_cmdline_enabled = true;
}
Template symbols are made DECL_ONE_ONLY, which ends up in the gnu.linkonce
section as a unique global symbol. However, the linker only considers other
symbols in gnu.linkonce as being candidates for discarding duplicates.
The expected and correct behaviour is for all instantiations to be declared
weak.
