re PR target/31388 (ICE building libiberty multilib for mips16 multilibs)
PR c++/31388
* cp-tree.h (ARITHMETIC_TYPE): Include COMPLEX_TYPE.
* typeck.c (type_after_usual_arithmetic_conversions): Adjust, as
COMPLEX_TYPE is now an ARITHMETIC_TYPE.
* init.c (build_zero_init): Adjust, as
COMPLEX_TYPE is now a SCALAR_TYPE.
* typeck2.c (digest_init): Allow brace-enclosed initializers for
COMPLEX_TYPE, even though that is now a SCALAR_TYPE.
PR c++/31388
* g++.dg/ext/complex2.C: New test.
From-SVN: r124172