[Bug middle-end/67220] GCC fails to properly handle libcall symbol visibility of built functions

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67220

--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
The last patch is at

https://gcc.gnu.org/git/?p=gcc.git;a=patch;h=5bf0d3520f9c646452b16805fcb47cc1804dd514