[Bug c/110048] New: undefined reference when build with O0

[yinyuefengyi at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110048

            Bug ID: 110048
           Summary: undefined reference when build with O0
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: yinyuefengyi at gmail dot com
  Target Milestone: ---

The below case failed to link with O0 since gcc 5.1, is it a regression? 
Though clang always failed to link... 
The case links success with O1+ or 'inline' removed.

https://godbolt.org/z/9PEhWrov8

inline void foo(void)
{
}

int main(void)
{
  foo();
}