[Sun C++ 5.9/x86_64] ube ICE in collate.ccp

When compiling the locale utility in release mode on x86 hardware with the Sunpro 5.9 compiler, a UBE error is triggered when attempting to build the collate.cpp source. This appears to only trigger in wide mode (at least on Solaris).

For Solaris on AMD64 hardware, the error observed is:
CC -c -mt -I$(TOPDIR)/include -I$(BUILDDIR)/include -library=%none -O -m64 +w -errtags -erroff=hidef $(TOPDIR)/util/collate.cpp
...
"collate.cpp", [__1cDDefNprocess_order6Mrn0ARcollate_section_t_rI_v_]:ube: error: Assert has been violated at '/set/mars/builds.intel-S2/nightly.Thu/intel-S2/lang/ube/machine/src/abi_call.c 172'.

For Linux builds, the error observed is:
CC -c -mt -I$(TOPDIR)/include -I$(BUILDDIR)/include -library=%none -O -xarch=generic +w $(TOPDIR)/util/collate.cpp
...
"collate.cpp", [__1cDDefNprocess_order6Mrn0ARcollate_section_t_rI_v_]:ube: error: Assert has been violated at '/set/mars/builds.intel-Linux/nightly.Thu/intel-Linux/lang/ube/machine/src/abi_call.c 172'.