FreeBSD-clang provides both libclang_rt.asan-x86_64.so and the (should be?) lib32 item: libclang_rt.asan-i386.so:32 ? More . . .

[Mark Millard]

(Test context main 16, not a 15.0-BETA* .)

FreeBS-clang provides both 64-bit and a 32-bit library:

# pkg info -b FreeBSD-clang
FreeBSD-clang-16.snap20251014184832:
        libclang_rt.asan-i386.so:32
        libclang_rt.asan-x86_64.so
        libprivateclang.so.19
        libprivatellvm.so.19

# file /usr/lib/clang/19/lib/freebsd/libclang_rt.asan-i386.so
/usr/lib/clang/19/lib/freebsd/libclang_rt.asan-i386.so: ELF 32-bit LSB shared 
object, Intel i386, version 1 (FreeBSD), dynamically linked, for FreeBSD 16.0 
(1600001), stripped

# ldd -a /usr/lib/clang/19/lib/freebsd/libclang_rt.asan-i386.so
/usr/lib/clang/19/lib/freebsd/libclang_rt.asan-i386.so:
        libgcc_s.so.1 => /usr/lib32/libgcc_s.so.1 (0x209d1000)
        libc.so.7 => /usr/lib32/libc.so.7 (0x209f0000)
/usr/lib32/libgcc_s.so.1:
        libc.so.7 => /usr/lib32/libc.so.7 (0x209f0000)
/usr/lib32/libc.so.7:
        libsys.so.7 => /usr/lib32/libsys.so.7 (0x20bef000)
[preloaded]
        [vdso] (0xffffe780)

Note that those in turn lead to /usr/lib32/
dependencies being involved overall.

That might contribute to why both lib.c.so.7
and lib.c.so.7:32 and both libgcc_s.so.1 and
libgcc_s.so.1:32 more show up in:

# pkg info -d FreeBSD-clang
FreeBSD-clang-16.snap20251014184832:
        FreeBSD-lld-16.snap20250930012546
        FreeBSD-libcompiler_rt-dev-16.snap20250923153156
        FreeBSD-clibs-16.snap20251014203606 (libc++.so.1)
        FreeBSD-clibs-16.snap20251014203606 (libc.so.7)
        FreeBSD-clibs-lib32-16.snap20251014184832 (libc.so.7:32)
        FreeBSD-clibs-16.snap20251014203606 (libcxxrt.so.1)
        FreeBSD-libexecinfo-16.snap20251003201239 (libexecinfo.so.1)
        FreeBSD-clibs-16.snap20251014203606 (libgcc_s.so.1)
        FreeBSD-clibs-lib32-16.snap20251014184832 (libgcc_s.so.1:32)
        FreeBSD-clibs-16.snap20251014203606 (libm.so.5)
        FreeBSD-ncurses-16.snap20251003201239 (libncursesw.so.9)
        FreeBSD-runtime-16.snap20251014184832 (libprivatezstd.so.5)
        FreeBSD-clibs-16.snap20251014203606 (libthr.so.3)
        FreeBSD-ncurses-16.snap20251003201239 (libtinfow.so.9)
        FreeBSD-runtime-16.snap20251014184832 (libz.so.6)

and both lib.c.so.7 and lib.c.so.7:32 in:

# pkg info -B FreeBSD-clang
FreeBSD-clang-16.snap20251014184832:
        libc++.so.1
        libc.so.7
        libc.so.7:32
        libcxxrt.so.1
        libexecinfo.so.1
        libgcc_s.so.1
        libgcc_s.so.1:32
        libm.so.5
        libncursesw.so.9
        libprivatezstd.so.5
        libthr.so.3
        libtinfow.so.9
        libz.so.6

Note: Deliberately done in an environment that does
not have any lang/gcc* installed [avoiding MULTILIB
being involved in the context. Otherwise other issues
lead to more confusing output for "info -d".


===
Mark Millard
marklmi at yahoo.com