question about gcc name mangling for gnu multiversion

Melanie B <mib.bugzilla@xxxxxxxxx> · Mon, 14 Oct 2013 17:13:03 -0400

The gcc name mangling for gnu multiversions includes a _Znum_ prefix
e.g. the test case in the gcc testsuite named mv1.C

       .quad   _Z13_Z3foov.ifuncv
        call    _Z13_Z3foov.ifuncv
        .globl  _Z13_Z3foov.ifuncv
        .type   _Z13_Z3foov.ifuncv, @gnu_indirect_function
        .set    _Z13_Z3foov.ifuncv,_Z3foov.resolver
 Is the _Z13 prefix needed? It seems like the .ifunc suffix would be adequate.

 grep ifunc *.s | grep call
mv12.s: call    _Z13_Z3foov.ifuncv
mv12.s: call    _Z13_Z3foov.ifuncv
mv1.s:  call    _Z13_Z3foov.ifuncv
mv2.s:  call    _Z13_Z3foov.ifuncv
mv5.s:  call    _Z13_Z3foov.ifuncv
mv6.s:  call    _Z19_ZN3Foo3fooEv.ifuncP3Foo

Do you expect the name mangling will be added to a standards document?

Thanks and regards