https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87146
Bug ID: 87146
Summary: ubsan bootstrap with non-gcc compiler fails
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
This bootstrap configure line works fine:
../trunk/configure --prefix=/home/dcb/gcc/results.263945.ubsan \
--with-build-config=bootstrap-ubsan \
--disable-multilib \
--disable-werror \
--enable-checking=release \
--enable-languages=c,c++,fortran
This doesn't
CC="/home/dcb/llvm/clang601/bin/clang -Wall" \
CXX="/home/dcb/llvm/clang601/bin/clang++ -Wall" \
../trunk/configure --prefix=/home/dcb/gcc/results.263945.ubsan \
--with-build-config=bootstrap-ubsan \
--disable-multilib \
--disable-werror \
--enable-checking=release \
--enable-languages=c,c++,fortran
failing at the bootstrap compare
Comparing stages 2 and 3
Bootstrap comparison failure!
fixincludes/fixfixes.o differs
gcc/ira-conflicts.o differs
gcc/gcc.o differs
gcc revision is 263945.
Should I wait for upcoming clang 7.0 or is there something
special about a non-gcc compiler bootstrap ?
