When I added -fabi-compat-version=8 to avoid mangling aliases it also
suppressed the -Wabi warning.
PR c++/113451
gcc/testsuite/ChangeLog:
* g++.dg/abi/mangle-regparm1a.C: Use -Wabi=0.
// { dg-do run { target { { i?86-*-* x86_64-*-* } && ia32 } } }
-// { dg-options "-fabi-version=8 -fabi-compat-version=8 -Wabi -save-temps" }
+// { dg-options "-fabi-version=8 -fabi-compat-version=8 -Wabi=0 -save-temps" }
// { dg-final { scan-assembler "_Z18IndirectExternCallIPFviiEiEvT_T0_S3_" } }
template <typename F, typename T>