[Bug lto/86490] lto1: fatal error: multiple prevailing defs

[joe.harvell at netscout dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86490

--- Comment #16 from joe.harvell at netscout dot com ---
Correction on the previous comment.  I said

This function is defined in one .c file and declared with the extern keyword in
another .c file.

But in fact the extern declaration in the second .c file is removed by the
pre-processor.  So the symbol only occurs in one .c file.