Hi!
Recently, I'm stumbled in such an easy task as build Postgres with clang
and
sanitizer.
Usually, I use autotools to build Postgres something like this:
SRC="../postgres"
TRG="/tmp"
LINUX_CONFIGURE_FEATURES="
--without-llvm
--with-tcl --with-tclconfig=/usr/lib/tcl8.6/ --with-perl
--with-python --with-gssapi --with-pam --with-ldap --with-selinux
--with-systemd --with-uuid=ossp --with-libxml --with-libxslt --with-zstd
--with-ssl=openssl
"
CC="ccache clang" CXX="ccache clang++" \
CFLAGS="-Og -ggdb -fno-sanitize-recover=all -fsanitize=alignment,undefined"
\
CXXFLAGS="-Og -ggdb -fno-sanitize-recover=all
-fsanitize=alignment,undefined" \
LDFALGS="-fsanitize=alignment,undefined" \
\
$SRC/configure \
-C \
--prefix=$TRG/"pgsql" \
--enable-debug --enable-tap-tests --enable-depend --enable-cassert \
--enable-injection-points --enable-nls \
$LINUX_CONFIGURE_FEATURES
...
$ ./config.status --config
'-C' '--prefix=/tmp/pgsql' '--enable-debug' '--enable-tap-tests'
'--enable-depend'
'--enable-cassert' '--enable-injection-points' '--enable-nls'
'--without-llvm'
'--with-tcl' '--with-tclconfig=/usr/lib/tcl8.6/' '--with-perl'
'--with-python'
'--with-gssapi' '--with-pam' '--with-ldap' '--with-selinux'
'--with-systemd'
'--with-uuid=ossp' '--with-libxml' '--with-libxslt' '--with-zstd'
'--with-ssl=openssl'
'CC=ccache clang'
'CFLAGS=-Og -ggdb -fno-sanitize-recover=all -fsanitize=alignment,undefined'
'CXX=ccache clang++'
'CXXFLAGS=-Og -ggdb -fno-sanitize-recover=all
-fsanitize=alignment,undefined'
Then it compiles with no problems.
Now I exact the same, but with meson build.
LINUX_CONFIGURE_FEATURES="
--with-gssapi --with-icu --with-ldap --with-libxml --with-libxslt
--with-lz4 --with-zstd --with-pam --with-perl --with-python
--with-tcl --with-tclconfig=/usr/lib/tcl8.6
--with-selinux --with-sll=openssl --with-systemd --with-uuid=ossp
"
LINUX_MESON_FEATURES="-Dllvm=disabled -Duuid=e2fs"
PG_TEST_EXTRA="kerberos ldap ssl libpq_encryption load_balance"
SANITIZER_FLAGS="-fsanitize=alignment,undefined" \
CC="ccache clang" \
CXX="ccache clang++" \
CFLAGS="-Og -ggdb -fno-sanitize-recover=all $SANITIZER_FLAGS" \
CXXFLAGS="$CFLAGS" \
LDFALGS="$SANITIZER_FLAGS" \
meson setup \
--buildtype=debug -Dcassert=true -Dinjection_points=true \
-Dprefix=/tmp/pgsql \
${LINUX_MESON_FEATURES} \
-DPG_TEST_EXTRA="$PG_TEST_EXTRA" \
build-meson postgres
...
System
host system: linux x86_64
build system : linux x86_64
Compiler
linker : ld.bfd
C compiler : clang 14.0.0-1ubuntu1
Compiler Flags
CPP FLAGS : -D_GNU_SOURCE
C FLAGS, functional: -fno-strict-aliasing -fwrapv
C FLAGS, warnings : -Wmissing-prototypes -Wpointer-arith
-Werror=vla
-Werror=unguarded-availability-new -Wendif-labels
-Wmissing-format-attribute
-Wcast-function-type -Wformat-security -Wdeclaration-after-statement
-Wno-unused-command-line-argument -Wno-compound-token-split-by-macro
C FLAGS, modules : -fvisibility=hidden
C FLAGS, user specified: -Og -ggdb -fno-sanitize-recover=all
-fsanitize=alignment,undefined
LD FLAGS : -Og -ggdb -fno-sanitize-recover=all
-fsanitize=alignment,undefined
...
And then upon build I've got overwhelmed by thousands of undefined
reference errors.
fe-auth-scram.c:(.text+0x17a): undefined reference to
`__ubsan_handle_builtin_unreachable'
/usr/bin/ld: fe-auth-scram.c:(.text+0x189): undefined reference to
`__ubsan_handle_type_mismatch_v1_abort'
/usr/bin/ld: fe-auth-scram.c:(.text+0x195): undefined reference to
`__ubsan_handle_type_mismatch_v1_abort'
/usr/bin/ld: fe-auth-scram.c:(.text+0x1a1): undefined reference to
`__ubsan_handle_type_mismatch_v1_abort'
/usr/bin/ld: fe-auth-scram.c:(.text+0x1ad): undefined reference to
`__ubsan_handle_type_mismatch_v1_abort'
/usr/bin/ld: fe-auth-scram.c:(.text+0x1b9): undefined reference to
`__ubsan_handle_type_mismatch_v1_abort'
/usr/bin/ld:
src/interfaces/libpq/libpq.so.5.17.p/fe-auth-scram.c.o:fe-auth-scram.c:(.text+0x1c8):
more undefined references to `__ubsan_handle_type_mismatch_v1_abort' follow
/usr/bin/ld: src/interfaces/libpq/libpq.so.5.17.p/fe-auth-scram.c.o: in
function `scram_init':
fe-auth-scram.c:(.text+0x1d4): undefined reference to
`__ubsan_handle_nonnull_arg_abort'
/usr/bin/ld: src/interfaces/libpq/libpq.so.5.17.p/fe-auth-scram.c.o: in
function `scram_exchange':
fe-auth-scram.c:(.text+0x11c2): undefined reference to
`__ubsan_handle_type_mismatch_v1_abort'
/usr/bin/ld: fe-auth-scram.c:(.text+0x11d1): undefined reference to
`__ubsan_handle_type_mismatch_v1_abort'
/usr/bin/ld:
