https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90086
Bug ID: 90086 Summary: libphobos: warning: type and size of dynamic symbol `fiber_switchContext' are not defined Product: gcc Version: 9.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: d Assignee: ibuclaw at gdcproject dot org Reporter: ibuclaw at gdcproject dot org Target Milestone: --- FAIL: libphobos.druntime_shared/core/thread.d (test for excess errors) Excess errors: /usr/local/bin/ld: warning: type and size of dynamic symbol `fiber_switchContext' are not defined The lack of type or size directives also means the execution of the test segfaults as well.