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Re: [tree-ssa]: Invalid GIMPLE generated by C++ front end
On Wednesday, August 13, 2003, at 4:52 PM, Jason Merrill wrote:
On Wed, 13 Aug 2003 15:53:41 -0400, Daniel Berlin
<dberlin@dberlin.org> wrote:
I've been seeing expressions like T.2 = (char * const &)&<UVbbd0>
generated by the C++ FE lately (compiling string-inst.cc on darwin,
for
instance).
Are these actually valid GIMPLE?
No. I ran into a similar crash recently; the problem turned out to be
with
the inliner inserting nops during &* elimination. I've attached a
patch
below. Does it fix your bug?
No dice.
/Users/dberlin/gcc/build/gcc/xgcc -shared-libgcc
-B/Users/dberlin/gcc/build/gcc/ -nostdinc++
-L/Users/dberlin/gcc/build/powerpc-apple-darwin7.0.0b1/soft-float/
libstdc++-v3/src
-L/Users/dberlin/gcc/build/powerpc-apple-darwin7.0.0b1/soft-float/
libstdc++-v3/src/.libs -B/usr/local/powerpc-apple-darwin7.0.0b1/bin/
-B/usr/local/powerpc-apple-darwin7.0.0b1/lib/ -isystem
/usr/local/powerpc-apple-darwin7.0.0b1/include -isystem
/usr/local/powerpc-apple-darwin7.0.0b1/sys-include -msoft-float
-nostdinc++
-I/Users/dberlin/gcc/build/powerpc-apple-darwin7.0.0b1/soft-float/
libstdc++-v3/include/powerpc-apple-darwin7.0.0b1
-I/Users/dberlin/gcc/build/powerpc-apple-darwin7.0.0b1/soft-float/
libstdc++-v3/include -I../../../../../libstdc++-v3/libsupc++
-I../../../../../libstdc++-v3/libmath -g -fno-strict-aliasing -O2
-save-temps -msoft-float -fno-implicit-templates -Wall -Wno-format -W
-Wwrite-strings -fdiagnostics-show-location=once -c
../../../../../libstdc++-v3/src/locale-inst.cc -o locale-inst.o
/Users/dberlin/gcc/build/powerpc-apple-darwin7.0.0b1/soft-float/
libstdc++-v3/include/bits/locale_facets.tcc: In
member function `_InIter std::money_get<_CharT,
_InIter>::do_get(_InIter,
_InIter, bool, std::ios_base&, std::_Ios_Iostate&, long double&)
const [with
_CharT = char, _InIter = std::istreambuf_iterator<char,
std::char_traits<char> >]':
../../../../../libstdc++-v3/src/locale-inst.cc:47: instantiated from
here
/Users/dberlin/gcc/build/powerpc-apple-darwin7.0.0b1/soft-float/
libstdc++-v3/include/bits/locale_facets.tcc:656: internal compiler
error: in
copy_body_r, at tree-inline.c:472