19991030 ICE in libstdc++ testsuite

[Alan Modra]

Running /usr/src/egcs/libstdc++/testsuite/libstdc++.tests/test.exp ...
FAIL: tstring.cc compilation
FAIL: tstring.cc -O compilation

GNU C++ version 2.96 19991030 (experimental) (i586-linuxlibc1) compiled by
GNU C version 2.96 19991030 (experimental).
/usr/src/egcs/libstdc++/tests/tstring.cc: In function `void decltest ()':
/usr/src/egcs/libstdc++/tests/tstring.cc:73: Internal compiler error in
`convert_regs_1', at reg-stack.c:2539