https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121261
Bug ID: 121261
Summary: Problems with bootstrap-ubsan
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
For the last couple of weeks, whenever I try a bootstrap
with ubsan enabled, I get the following text:
LC_ALL=C GCC_COLORS= /home/dcb42/gcc/working/./gcc/xgcc
-B/home/dcb42/gcc/working/./gcc/ -fno-checking -xc++ -nostdinc /dev/null -S -o
/dev/null -fself-test=../../trunk/gcc/testsuite/selftests
../../trunk/gcc/vec.h:2517:19: runtime error: null pointer passed as argument
1, which is declared to never be null
../../trunk/gcc/vec.h:2517:19: runtime error: null pointer passed as argument
1, which is declared to never be null
#0 0x000008d99fdf in operator==(string_slice const&, string_slice const&)
../../trunk/gcc/vec.h:2517
#1 0x000008d88a11 in test_string_slice_equality ../../trunk/gcc/vec.cc:748
#2 0x000008d9349f in selftest::vec_cc_tests() ../../trunk/gcc/vec.cc:831
Configure is
CFLAGS="-g -O3 -march=znver3 " \
CXXFLAGS="-g -O3 -march=znver3 " \
../trunk/configure \
--disable-multilib \
--disable-werror \
--with-build-config="bootstrap-ubsan" \
--enable-checking=yes \
--enable-languages=c,c++,fortran
and the problem occurs deep in the bootstrap:
working $ grep "^Config" mk.out
Configuring in build-x86_64-pc-linux-gnu/libiberty
Configuring in build-x86_64-pc-linux-gnu/fixincludes
Configuring in build-x86_64-pc-linux-gnu/libcpp
Configuring stage 1 in ./fixincludes
Configuring stage 1 in ./lto-plugin
Configuring stage 1 in ./zlib
Configuring stage 1 in ./libiberty
Configuring stage 1 in ./libbacktrace
Configuring stage 1 in ./libcody
Configuring stage 1 in ./libdecnumber
Configuring stage 1 in ./libcpp
Configuring stage 1 in ./gcc
Configuring stage 1 in x86_64-pc-linux-gnu/libgcc
Configuring stage 1 in x86_64-pc-linux-gnu/libgomp
Configuring stage 1 in x86_64-pc-linux-gnu/libstdc++-v3
Configuring stage 1 in x86_64-pc-linux-gnu/libsanitizer
Configuring stage 2 in ./fixincludes
Configuring stage 2 in ./libiberty
Configuring stage 2 in ./lto-plugin
Configuring stage 2 in ./zlib
Configuring stage 2 in ./libbacktrace
Configuring stage 2 in ./libcody
Configuring stage 2 in ./libdecnumber
Configuring stage 2 in ./libcpp
Configuring stage 2 in ./gcc
working $
