genmatch is hanging when bootstrapping on AIX (gcc111). When I attach to the process:
#0 0x1007efac in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string () #1 0x1000e6b0 in _ZN6parser13parse_captureEP7operand (this=0x300594b8, op=0x0) at /home/dje/src/src/gcc/genmatch.c:2607 #2 0x1000e9f0 in _ZN6parser10parse_exprEv (this=0x2ff20208) at /home/dje/src/src/gcc/genmatch.c:2669 #3 0x1000ee38 in _ZN6parser8parse_opEv (this=0x2ff20208) at /home/dje/src/src/gcc/genmatch.c:2728 #4 0x1000efc4 in _ZN6parser14parse_simplifyEjR3vecIP8simplify7va_heap6vl_ptrEP12predicate_idP4expr (this=0x2ff20208, match_location=4614, simplifiers=..., matcher=0x0, result=0x0) at /home/dje/src/src/gcc/genmatch.c:2792 #5 0x100102fc in _ZN6parser13parse_patternEv (this=0x2ff20208) at /home/dje/src/src/gcc/genmatch.c:3052 #6 0x10010c0c in _ZN6parser9parse_forEj (this=0x2ff20208) at /home/dje/src/src/gcc/genmatch.c:2991 #7 0x10010350 in _ZN6parser13parse_patternEv (this=0x2ff20208) at /home/dje/src/src/gcc/genmatch.c:3090 #8 0x1001122c in _ZN6parserC2EP10cpp_reader (this=0x2ff20208, r_=0x3003bbec) at /home/dje/src/src/gcc/genmatch.c:3122 #9 0x10004acc in main (argc=<error reading variable>, argv=<error reading variable>) at _start_ :3204