<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/54647>54647</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            compiler-rt-sanitizers fail to compile in ../lib/interception/interception_type_test.cpp:36:1 with error: static_assert failed when compiled against musl-libc on arm32
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          stefson
      </td>
    </tr>
</table>

<pre>
    hello everyone, 

I tried to compile compiler-rt sanitizers on a linux system that uses musl as its libc, on armv7a, and I got this error: 
```
[108/278] /usr/lib/llvm/13/bin/armv7a-unknown-linux-musleabihf-clang++  -I/var/tmp/portage/sys-libs/compiler-rt-sanitizers-13.0.0-r1/work/compiler-rt/lib/interception/..  -DNDEBUG -O2 -pipe -march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=hard -fomit-frame-pointer -Wall -std=c++14 -Wno-unused-parameter  -march=armv7-a -mfloat-abi=hard -fPIC -fno-builtin -fno-exceptions -fomit-frame-pointer -funwind-tables -fno-stack-protector -fno-sanitize=safe-stack -fvisibility=hidden -fno-lto -Werror=thread-safety -Werror=thread-safety-reference -Werror=thread-safety-beta -O3 -gline-tables-only -Wno-gnu -Wno-variadic-macros -Wno-c99-extensions -nostdinc++ -fno-rtti -MD -MT lib/interception/CMakeFiles/RTInterception.armhf.dir/interception_type_test.cpp.o -MF lib/interception/CMakeFiles/RTInterception.armhf.dir/interception_type_test.cpp.o.d -o lib/interception/CMakeFiles/RTInterception.armhf.dir/interception_type_test.cpp.o -c /var/tmp/portage/sys-libs/compiler-rt-sanitizers-13.0.0-r1/work/compiler-rt/lib/interception/interception_type_test.cpp
FAILED: lib/interception/CMakeFiles/RTInterception.armhf.dir/interception_type_test.cpp.o 
/usr/lib/llvm/13/bin/armv7a-unknown-linux-musleabihf-clang++  -I/var/tmp/portage/sys-libs/compiler-rt-sanitizers-13.0.0-r1/work/compiler-rt/lib/interception/..  -DNDEBUG -O2 -pipe -march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=hard -fomit-frame-pointer -Wall -std=c++14 -Wno-unused-parameter  -march=armv7-a -mfloat-abi=hard -fPIC -fno-builtin -fno-exceptions -fomit-frame-pointer -funwind-tables -fno-stack-protector -fno-sanitize=safe-stack -fvisibility=hidden -fno-lto -Werror=thread-safety -Werror=thread-safety-reference -Werror=thread-safety-beta -O3 -gline-tables-only -Wno-gnu -Wno-variadic-macros -Wno-c99-extensions -nostdinc++ -fno-rtti -MD -MT lib/interception/CMakeFiles/RTInterception.armhf.dir/interception_type_test.cpp.o -MF lib/interception/CMakeFiles/RTInterception.armhf.dir/interception_type_test.cpp.o.d -o lib/interception/CMakeFiles/RTInterception.armhf.dir/interception_type_test.cpp.o -c /var/tmp/portage/sys-libs/compiler-rt-sanitizers-13.0.0-r1/work/compiler-rt/lib/interception/interception_type_test.cpp
/var/tmp/portage/sys-libs/compiler-rt-sanitizers-13.0.0-r1/work/compiler-rt/lib/interception/interception_type_test.cpp:36:1: error: static_assert failed due to requirement 'sizeof(unsigned long) == sizeof(long long)' ""
COMPILER_CHECK(sizeof(::OFF_T) == sizeof(off_t));
^              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/var/tmp/portage/sys-libs/compiler-rt-sanitizers-13.0.0-r1/work/compiler-rt/lib/interception/../sanitizer_common/sanitizer_internal_defs.h:332:30: note: expanded from macro 'COMPILER_CHECK'
#define COMPILER_CHECK(pred) static_assert(pred, "")
                             ^             ~~~~
1 error generated.
```

I'm still with llvm-13.0.0 toolchain, but the file in question hasn't been touched for a longer time: 
https://github.com/llvm/llvm-project/blob/main/compiler-rt/lib/interception/interception_type_test.cpp#L36

to me it seems that this happens as the ifdef in #34 is written in a way that my compiler compiling the code ends up in believing to be on `SANITIZER_ANDROID`; which clearly is not the case. 
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJztV99v2zYQ_mvsF4KCLDlW_OCHxI43Y01TZBkK7MWgpJPFRSJVkrLr_fX7KMlJ2iYFtiHdHhIwtHS6Hx_vjkdeqvPjoqSq0oz2ZI5a0ShaslG4GoUX_bxhzkjKmdMs03UjKzr9Gm4cs0JJJ_8kY5lWTLBKqvYzs0frqGauFI61liyrW1sxYZl0Fixp5q14flPvE-FfhMrZhu20g5C0jIzRZhRfnKDMwmH0r2eXk_B8FK2j5Hx0tmJ4aq3BDNV-rvY1fiYxplQqzL0d3qp7pQ-KdyC5x0QilWXBs0qo3Si6xGCMbyCxF16fqxvMjTZO7OCZNdYF4dTi8YkT-KMT-CQOwiDkZgKWgzb3X3I-QJTKkcmocVJ7fEEAs6v3q6vL335i_CZivJENMV4Lk5WjeNXh5wKEomnxvi-afczzycxTKi0cxzpAL4XJGS90LR0vjKiJN7ozxfhHUVWMW5eDLeuXOpmCrDTcghjlvBFewjM_a_hbMx82S8xQkLayclL1L_R5WJd9AUnRqoNUOXcircj2QtaJ7J43RjvKnDYDcXArLFpRUM-ET3tpZSor6Y4ei8xzGkxXSFL-ccidlSsNiZx7UXd8ic4NFWRIZfQiR0oODriJGd8hcWjAzbWqjr3_dqrtH5A0UuQyg_syo21PzOZz-MSRsr1PlEYQpBpi0AM3zknGr1f4v2PPZsjyWtzTGmnkc-_2bvPka4AglUWQS_OV2NYdG9o6si7ImiaAb67Xr6c9QEro1wSfsR--L18G1Bei9cXm3dXK16nXW_dQ8t5K3FuJeytxbyXuR5e4_xOg-CKeYZr4gvtwQ8SWcTLbCmsJ99FCQH3O8pb8jdXQp1Yaqkk5eDaxwKWLUXTeIlN3CnyV9kVxzrAjMNgDg6efPkIQwpEfnUeWN9cfUPZvt8ufr5a_gPlBCnAwbtbr7d1zSnVRbF2ncD6KL09X2Sv2xd8ouXrd8d9ENQi88pOWLSTqjv5I6gSUqLY5FTYofbDjyM-hj7JC2ezC_rlBq4DIFUbXrCtCPrJfxyQ5LTOGNlQ09k3QGkO5D9IX6fNAX54ijlB1mtj3_r4O4rf-nvT5ynakyAhHefB8Y9O3XMBfA5jEcXaQrmT-tB_8jqzWVVYKf-YvWdr6folY4dsynE6fWmwVOJyVwoIhcSwlnBxOt1npfQYEoktrHFJO1vTYYZXONdbnb7TG2MFqmwaI0uNdowOB4-sPHF_-1lFpH-a6Q_Iv93UUv8PGfuIBbN0aC0J7SVTbvo_s-sJSNA2OGd9K-nXLAuH1C4eKeMrAcDDS4SDyNMEO4tjL1seHpnV4kNjfXkOmc2KkcsvaxgulVEnad181XnyTiuj8evF-c7f5Helz8X51e7NZ-YjFl-xQyqxkGe5YBiclzCvdByQTlgI2zhdxPo_nYuykq2jx_I7qatbT_howuu3yT8tjnzTfL5CHEk4aDOZM7BBG67o23W__bGjO42jcmmrxt5NDWtt2J-HZdDZNxuWCijycx3GazOKzKD2bJTOKJ0UqwogmRQEzlYDn7QKdPRr6sVxEYRSFcRxOZuFkGgdJGofJ-VQkUwqnoUhG05CQelXgDQfa7MZm0WFI253Fx0paZx8_Yu2-3tNJv2hdqc3COpQarcYd3EWH9S8pyazz">