# Tools to help catch use of uninitialized memory?

**URL:** <https://discourse.julialang.org/t/tools-to-help-catch-use-of-uninitialized-memory/124231>\
**Category:** Tooling\
**Tags:** question, memory-allocation\
**Created:** [December 28, 2024, 6:46pm UTC](https://discourse.julialang.org/t/tools-to-help-catch-use-of-uninitialized-memory/124231 "2024-12-28T18:46:09Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![nhz2](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nhz2/32/44428_2.png) [@nhz2](https://discourse.julialang.org/u/nhz2)\
**Post date:** [December 28, 2024, 6:46pm UTC](https://discourse.julialang.org/t/tools-to-help-catch-use-of-uninitialized-memory/124231/1 "2024-12-28T18:46:09Z")

</div>

It is easy to accidentally read from uninitialized memory after using `resize!` to grow a vector. Is there an equivalent of the memory sanitizer in C or any other tools for catching this when testing?

---

<div class="post-metadata">

**Author:** ![Benny](https://avatars.discourse-cdn.com/v4/letter/b/49beb7/32.png) [@Benny](https://discourse.julialang.org/u/Benny)\
**Post date:** [December 28, 2024, 7:26pm UTC](https://discourse.julialang.org/t/tools-to-help-catch-use-of-uninitialized-memory/124231/2 "2024-12-28T19:26:06Z")

</div>

I never used it before but could give this a shot  
[Sanitizer support · The Julia Language](https://docs.julialang.org/en/v1/devdocs/sanitizers/)

---

<div class="post-metadata">

**Author:** ![nhz2](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nhz2/32/44428_2.png) [@nhz2](https://discourse.julialang.org/u/nhz2)\
**Post date:** [December 28, 2024, 8:38pm UTC](https://discourse.julialang.org/t/tools-to-help-catch-use-of-uninitialized-memory/124231/3 "2024-12-28T20:38:40Z")

</div>

When I run the following I get an error.

```sh
$ mkdir /tmp/julia
$ SANITIZE_MEMORY=1 contrib/asan/build.sh /tmp/julia/

```

```sh
checking for gcc... /tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address
checking whether the C compiler works... no
configure: error: in `/tmp/julia/asan/deps/patchelf-0.17.2':
configure: error: C compiler cannot create executables
See `config.log' for more details
make[1]: *** [/home/nathan/github/julia/deps/patchelf.mk:22: patchelf-0.17.2/build-configured] Error 77
make[1]: Leaving directory '/tmp/julia/asan/deps'
make: *** [/home/nathan/github/julia/Makefile:86: julia-deps] Error 2
make: Leaving directory '/tmp/julia/asan'

```

---

<div class="post-metadata">

**Author:** ![nsajko](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nsajko/32/221187_2.png) [@nsajko](https://discourse.julialang.org/u/nsajko)\
**Post date:** [December 28, 2024, 10:45pm UTC](https://discourse.julialang.org/t/tools-to-help-catch-use-of-uninitialized-memory/124231/4 "2024-12-28T22:45:18Z")

</div>

> [@nhz2](#):
>
> ```none
> See `config.log' for more details
> 
> ```

There’s possibly some relevant info on the failure there.

---

<div class="post-metadata">

**Author:** ![nhz2](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nhz2/32/44428_2.png) [@nhz2](https://discourse.julialang.org/u/nhz2)\
**Post date:** [January 26, 2025, 8:30pm UTC](https://discourse.julialang.org/t/tools-to-help-catch-use-of-uninitialized-memory/124231/5 "2025-01-26T20:30:19Z")

</div>

I tried this again and found a `config.log` in `/tmp/julia/asan/deps/patchelf-0.17.2/`

> **config.log**
>
> ```sh
> This file contains any messages produced by compilers while
> running configure, to aid debugging if configure makes a mistake.
> 
> It was created by patchelf configure 0.17.2, which was
> generated by GNU Autoconf 2.71. Invocation command line was
> 
> $ /home/nathan/github/julia/deps/srccache/patchelf-0.17.2//configure --prefix=/tmp/julia/asan/usr --build=x86_64-unknown-linux-gnu --libdir=/tmp/julia/asan/usr/lib --bindir=/tmp/julia/asan/usr/tools 'LDFLAGS= -Wl,-rpath,'\''$$ORIGIN'\'' -Wl,-z,origin -Wl,-rpath-link,/tmp/julia/asan/usr/lib -Wl,--enable-new-dtags -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -Wl,--warn-unresolved-symbols -fsanitize=address -shared-libasan' 'F77=gfortran -march=native -mtune=native -m64' 'CC=/tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address' 'CXX=/tmp/julia/asan/../toolchain/usr/tools/clang++ -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address' LD=ld LDFLAGS= CPPFLAGS= MAKE=make
> 
> ## --------- ##
> ## Platform. ##
> ## --------- ##
> 
> hostname = pop-os
> uname -m = x86_64
> uname -r = 6.9.3-76060903-generic
> uname -s = Linux
> uname -v = #202405300957~1732141768~22.04~f2697e1 SMP PREEMPT_DYNAMIC Wed N
> 
> /usr/bin/uname -p = x86_64
> /bin/uname -X = unknown
> 
> /bin/arch = x86_64
> /usr/bin/arch -k = unknown
> /usr/convex/getsysinfo = unknown
> /usr/bin/hostinfo = unknown
> /bin/machine = unknown
> /usr/bin/oslevel = unknown
> /bin/universe = unknown
> 
> PATH: /home/nathan/packages/texlive/bin/x86_64-linux/
> PATH: /home/nathan/.cargo/bin/
> PATH: /home/nathan/.juliaup/bin/
> PATH: /home/nathan/.local/bin/
> PATH: /home/nathan/bin/
> PATH: /usr/local/sbin/
> PATH: /usr/local/bin/
> PATH: /usr/sbin/
> PATH: /usr/bin/
> PATH: /sbin/
> PATH: /bin/
> PATH: /usr/games/
> PATH: /usr/local/games/
> PATH: /snap/bin/
> 
> ## ----------- ##
> ## Core tests. ##
> ## ----------- ##
> 
> configure:2390: looking for aux files: compile missing install-sh
> configure:2403: trying /home/nathan/github/julia/deps/srccache/patchelf-0.17.2/build-aux/
> configure:2432: /home/nathan/github/julia/deps/srccache/patchelf-0.17.2/build-aux/compile found
> configure:2432: /home/nathan/github/julia/deps/srccache/patchelf-0.17.2/build-aux/missing found
> configure:2414: /home/nathan/github/julia/deps/srccache/patchelf-0.17.2/build-aux/install-sh found
> configure:2563: checking for a BSD-compatible install
> configure:2636: result: /usr/bin/install -c
> configure:2647: checking whether build environment is sane
> configure:2702: result: yes
> configure:2861: checking for a race-free mkdir -p
> configure:2905: result: /usr/bin/mkdir -p
> configure:2912: checking for gawk
> configure:2947: result: no
> configure:2912: checking for mawk
> configure:2933: found /usr/bin/mawk
> configure:2944: result: mawk
> configure:2955: checking whether make sets $(MAKE)
> configure:2978: result: yes
> configure:3008: checking whether make supports nested variables
> configure:3026: result: yes
> configure:3212: checking for strip
> configure:3233: found /usr/bin/strip
> configure:3244: result: strip
> configure:3315: checking for objdump
> configure:3336: found /usr/bin/objdump
> configure:3347: result: objdump
> configure:3417: checking for objcopy
> configure:3438: found /usr/bin/objcopy
> configure:3449: result: objcopy
> configure:3519: checking for readelf
> configure:3540: found /usr/bin/readelf
> configure:3551: result: readelf
> configure:3587: checking whether make supports the include directive
> configure:3602: make -f confmf.GNU && cat confinc.out
> make[2]: Entering directory '/tmp/julia/asan/deps/patchelf-0.17.2'
> make[2]: Leaving directory '/tmp/julia/asan/deps/patchelf-0.17.2'
> this is the am__doit target
> configure:3605: $? = 0
> configure:3624: result: yes (GNU style)
> configure:3700: checking for gcc
> configure:3732: result: /tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address
> configure:4085: checking for C compiler version
> configure:4094: /tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address --version >&5
> clang version 18.1.7jl (/cache/yggdrasil/downloads/clones/llvm-project.git-5a9787eb535c2edc5dea030cc221c1d60f38c9f42344f410e425ea2139e233aa ed30d043a240d06bb6e010a41086e75713156f4f)
> Target: x86_64-unknown-linux-gnu
> Thread model: posix
> InstalledDir: /tmp/julia/asan/../toolchain/usr/tools
> configure:4105: $? = 0
> configure:4094: /tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address -v >&5
> clang version 18.1.7jl (/cache/yggdrasil/downloads/clones/llvm-project.git-5a9787eb535c2edc5dea030cc221c1d60f38c9f42344f410e425ea2139e233aa ed30d043a240d06bb6e010a41086e75713156f4f)
> Target: x86_64-unknown-linux-gnu
> Thread model: posix
> InstalledDir: /tmp/julia/asan/../toolchain/usr/tools
> Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/11
> Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/12
> Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/12
> Candidate multilib: .;@m64
> Selected multilib: .;@m64
> clang: warning: argument unused during compilation: '-fsanitize=memory' [-Wunused-command-line-argument]
> ... rest of stderr output deleted ...
> configure:4105: $? = 0
> configure:4094: /tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address -V >&5
> clang: error: argument to '-V' is missing (expected 1 value)
> clang: error: no input files
> configure:4105: $? = 1
> configure:4094: /tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address -qversion >&5
> clang: error: unknown argument '-qversion'; did you mean '--version'?
> clang: error: no input files
> configure:4105: $? = 1
> configure:4094: /tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address -version >&5
> clang: error: unknown argument '-version'; did you mean '--version'?
> clang: error: no input files
> configure:4105: $? = 1
> configure:4125: checking whether the C compiler works
> configure:4147: /tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address conftest.c >&5
> clang: error: invalid argument '-fsanitize=address' not allowed with '-fsanitize=memory'
> configure:4151: $? = 1
> configure:4191: result: no
> configure: failed program was:
> | /* confdefs.h */
> | #define PACKAGE_NAME "patchelf"
> | #define PACKAGE_TARNAME "patchelf"
> | #define PACKAGE_VERSION "0.17.2"
> | #define PACKAGE_STRING "patchelf 0.17.2"
> | #define PACKAGE_BUGREPORT ""
> | #define PACKAGE_URL ""
> | #define PACKAGE "patchelf"
> | #define VERSION "0.17.2"
> | /* end confdefs.h. */
> | 
> | int
> | main (void)
> | {
> | 
> | ;
> | return 0;
> | }
> configure:4196: error: in `/tmp/julia/asan/deps/patchelf-0.17.2':
> configure:4198: error: C compiler cannot create executables
> See `config.log' for more details
> 
> ## ---------------- ##
> ## Cache variables. ##
> ## ---------------- ##
> 
> ac_cv_env_CCASFLAGS_set=
> ac_cv_env_CCASFLAGS_value=
> ac_cv_env_CCAS_set=
> ac_cv_env_CCAS_value=
> ac_cv_env_CCC_set=
> ac_cv_env_CCC_value=
> ac_cv_env_CC_set=set
> ac_cv_env_CC_value='/tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address'
> ac_cv_env_CFLAGS_set=
> ac_cv_env_CFLAGS_value=
> ac_cv_env_CPPFLAGS_set=set
> ac_cv_env_CPPFLAGS_value=
> ac_cv_env_CXXFLAGS_set=
> ac_cv_env_CXXFLAGS_value=
> ac_cv_env_CXX_set=set
> ac_cv_env_CXX_value='/tmp/julia/asan/../toolchain/usr/tools/clang++ -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address'
> ac_cv_env_LDFLAGS_set=set
> ac_cv_env_LDFLAGS_value=
> ac_cv_env_LIBS_set=
> ac_cv_env_LIBS_value=
> ac_cv_env_build_alias_set=set
> ac_cv_env_build_alias_value=x86_64-unknown-linux-gnu
> ac_cv_env_host_alias_set=
> ac_cv_env_host_alias_value=
> ac_cv_env_target_alias_set=
> ac_cv_env_target_alias_value=
> ac_cv_path_install='/usr/bin/install -c'
> ac_cv_path_mkdir=/usr/bin/mkdir
> ac_cv_prog_AWK=mawk
> ac_cv_prog_ac_ct_CC='/tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address'
> ac_cv_prog_ac_ct_OBJCOPY=objcopy
> ac_cv_prog_ac_ct_OBJDUMP=objdump
> ac_cv_prog_ac_ct_READELF=readelf
> ac_cv_prog_ac_ct_STRIP=strip
> ac_cv_prog_make_make_set=yes
> am_cv_make_support_nested_variables=yes
> 
> ## ----------------- ##
> ## Output variables. ##
> ## ----------------- ##
> 
> ACLOCAL='${SHELL} '\''/home/nathan/github/julia/deps/srccache/patchelf-0.17.2/build-aux/missing'\'' aclocal-1.16'
> AMDEPBACKSLASH='\'
> AMDEP_FALSE='#'
> AMDEP_TRUE=''
> AMTAR='$${TAR-tar}'
> AM_BACKSLASH='\'
> AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
> AM_DEFAULT_VERBOSITY='1'
> AM_V='$(V)'
> AUTOCONF='${SHELL} '\''/home/nathan/github/julia/deps/srccache/patchelf-0.17.2/build-aux/missing'\'' autoconf'
> AUTOHEADER='${SHELL} '\''/home/nathan/github/julia/deps/srccache/patchelf-0.17.2/build-aux/missing'\'' autoheader'
> AUTOMAKE='${SHELL} '\''/home/nathan/github/julia/deps/srccache/patchelf-0.17.2/build-aux/missing'\'' automake-1.16'
> AWK='mawk'
> CC='/tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address'
> CCAS=''
> CCASDEPMODE=''
> CCASFLAGS=''
> CCDEPMODE=''
> CFLAGS=''
> CPPFLAGS=''
> CSCOPE='cscope'
> CTAGS='ctags'
> CXX='/tmp/julia/asan/../toolchain/usr/tools/clang++ -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address'
> CXXDEPMODE=''
> CXXFLAGS=''
> CYGPATH_W='echo'
> DEFS=''
> DEPDIR='.deps'
> ECHO_C=''
> ECHO_N='-n'
> ECHO_T=''
> ETAGS='etags'
> EXEEXT=''
> HAVE_CXX17=''
> INSTALL_DATA='${INSTALL} -m 644'
> INSTALL_PROGRAM='${INSTALL}'
> INSTALL_SCRIPT='${INSTALL}'
> INSTALL_STRIP_PROGRAM='$(install_sh) -c -s'
> LDFLAGS=''
> LIBOBJS=''
> LIBS=''
> LTLIBOBJS=''
> MAKEINFO='${SHELL} '\''/home/nathan/github/julia/deps/srccache/patchelf-0.17.2/build-aux/missing'\'' makeinfo'
> MKDIR_P='/usr/bin/mkdir -p'
> OBJCOPY='objcopy'
> OBJDUMP='objdump'
> OBJEXT=''
> PACKAGE='patchelf'
> PACKAGE_BUGREPORT=''
> PACKAGE_NAME='patchelf'
> PACKAGE_STRING='patchelf 0.17.2'
> PACKAGE_TARNAME='patchelf'
> PACKAGE_URL=''
> PACKAGE_VERSION='0.17.2'
> PATH_SEPARATOR=':'
> READELF='readelf'
> SET_MAKE=''
> SHELL='/bin/bash'
> STRIP='strip'
> VERSION='0.17.2'
> WITH_ASAN_FALSE=''
> WITH_ASAN_TRUE=''
> WITH_UBSAN_FALSE=''
> WITH_UBSAN_TRUE=''
> ac_ct_CC='/tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address'
> ac_ct_CXX=''
> am__EXEEXT_FALSE=''
> am__EXEEXT_TRUE=''
> am__fastdepCCAS_FALSE=''
> am__fastdepCCAS_TRUE=''
> am__fastdepCC_FALSE=''
> am__fastdepCC_TRUE=''
> am__fastdepCXX_FALSE=''
> am__fastdepCXX_TRUE=''
> am__include='include'
> am__isrc=' -I$(srcdir)'
> am__leading_dot='.'
> am__nodep='_no'
> am__quote=''
> am__tar='$${TAR-tar} chof - "$$tardir"'
> am__untar='$${TAR-tar} xf -'
> bindir='/tmp/julia/asan/usr/tools'
> build_alias='x86_64-unknown-linux-gnu'
> datadir='${datarootdir}'
> datarootdir='${prefix}/share'
> docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
> dvidir='${docdir}'
> exec_prefix='NONE'
> host_alias=''
> htmldir='${docdir}'
> includedir='${prefix}/include'
> infodir='${datarootdir}/info'
> install_sh='${SHELL} /home/nathan/github/julia/deps/srccache/patchelf-0.17.2/build-aux/install-sh'
> libdir='/tmp/julia/asan/usr/lib'
> libexecdir='${exec_prefix}/libexec'
> localedir='${datarootdir}/locale'
> localstatedir='${prefix}/var'
> mandir='${datarootdir}/man'
> mkdir_p='$(MKDIR_P)'
> oldincludedir='/usr/include'
> pdfdir='${docdir}'
> prefix='/tmp/julia/asan/usr'
> program_transform_name='s,x,x,'
> psdir='${docdir}'
> runstatedir='${localstatedir}/run'
> sbindir='${exec_prefix}/sbin'
> sharedstatedir='${prefix}/com'
> sysconfdir='${prefix}/etc'
> target_alias=''
> 
> ## ----------- ##
> ## confdefs.h. ##
> ## ----------- ##
> 
> /* confdefs.h */
> #define PACKAGE_NAME "patchelf"
> #define PACKAGE_TARNAME "patchelf"
> #define PACKAGE_VERSION "0.17.2"
> #define PACKAGE_STRING "patchelf 0.17.2"
> #define PACKAGE_BUGREPORT ""
> #define PACKAGE_URL ""
> #define PACKAGE "patchelf"
> #define VERSION "0.17.2"
> 
> configure: exit 77
> 
> ```

---

<div class="post-metadata">

**Author:** ![nhz2](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nhz2/32/44428_2.png) [@nhz2](https://discourse.julialang.org/u/nhz2)\
**Post date:** [January 26, 2025, 9:34pm UTC](https://discourse.julialang.org/t/tools-to-help-catch-use-of-uninitialized-memory/124231/6 "2025-01-26T21:34:06Z")

</div>

I made a custom vector type that errors when reading uninitialized memory by storing a `BitVector` of valid indexes.

```julia
struct MemSanVector{T} <: AbstractVector{T}
    data::Vector{T}
    read_valid::BitVector
    MemSanVector{T}() where T = new{T}(Vector{T}(), BitVector())
end
Base.size(x::MemSanVector) = size(x.data)
Base.IndexStyle(::Type{MemSanVector}) = IndexLinear()
function Base.getindex(x::MemSanVector, i::Int)
    x.read_valid[i] || throw(BoundsError(x, i))
    x.data[i]
end
function Base.setindex!(x::MemSanVector, v, i::Int)
    x.data[i] = v
    x.read_valid[i] = true
    x
end
function Base.resize!(x::MemSanVector, n::Integer)
    if n < length(x)
        resize!(x.data, n)
        resize!(x.read_valid, n)
    elseif n > length(x)
        inc = n - length(x)
        resize!(x.data, n)
        append!(x.read_valid, (false for i in 1:inc))
    end
    x
end

```

```julia-repl
julia> a = MemSanVector{Int64}()
0-element MemSanVector{Int64}

julia> resize!(a, 3);

julia> a[1]
ERROR: BoundsError: attempt to access 3-element MemSanVector{Int64} at index [1]
Stacktrace:
 [1] getindex(x::MemSanVector{Int64}, i::Int64)
   @ Main ~/Documents/memsan/memsan.jl:11
 [2] top-level scope
   @ REPL[9]:1

julia> a .= 5;

julia> a[1]
5

```

---

<div class="post-metadata">

**Author:** ![nsajko](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nsajko/32/221187_2.png) [@nsajko](https://discourse.julialang.org/u/nsajko)\
**Post date:** [January 26, 2025, 10:58pm UTC](https://discourse.julialang.org/t/tools-to-help-catch-use-of-uninitialized-memory/124231/7 "2025-01-26T22:58:55Z")

</div>

These seem like relevant errors:

> [@nhz2](#):
>
> ```julia
> clang: warning: argument unused during compilation: '-fsanitize=memory' [-Wunused-command-line-argument]
> ... rest of stderr output deleted ...
> configure:4105: $? = 0
> configure:4094: /tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address -V >&5
> clang: error: argument to '-V' is missing (expected 1 value)
> clang: error: no input files
> configure:4105: $? = 1
> configure:4094: /tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address -qversion >&5
> clang: error: unknown argument '-qversion'; did you mean '--version'?
> clang: error: no input files
> configure:4105: $? = 1
> configure:4094: /tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address -version >&5
> clang: error: unknown argument '-version'; did you mean '--version'?
> clang: error: no input files
> configure:4105: $? = 1
> configure:4125: checking whether the C compiler works
> configure:4147: /tmp/julia/asan/../toolchain/usr/tools/clang -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer -fsanitize=address conftest.c >&5
> clang: error: invalid argument '-fsanitize=address' not allowed with '-fsanitize=memory'
> 
> ```

It seems there are multiple errors with the command line arguments to clang, perhaps the script is outdated 🤷‍♂️