[thomas-weissschuh:b4/kunit-kselftests 21/23] lib/kunit/uapi-preinit.c:44:1: warning: non-void function does not return a value

[thomas-weissschuh:b4/kunit-kselftests 21/23] lib/kunit/uapi-preinit.c:44:1: warning: non-void function does not return a value

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/thomas.weissschuh/linux.git b4/kunit-kselftests
head:   c5dc664800bcb374e0ea3bcb152167b8dc1715c0
commit: 843542230b45c042286f208e66c0c473f03abd99 [21/23] kunit: uapi: Introduce preinit executable
config: x86_64-buildonly-randconfig-006-20250205 (https://download.01.org/0day-ci/archive/20250205/202502050735.7LA0CNx0-lkp@intel.com/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250205/202502050735.7LA0CNx0-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202502050735.7LA0CNx0-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> lib/kunit/uapi-preinit.c:44:1: warning: non-void function does not return a value [-Wreturn-type]
      44 | }
         | ^
   1 warning generated.


vim +44 lib/kunit/uapi-preinit.c

    26	
    27	int main(int argc, char **argv, char **envp)
    28	{
    29		int ret;
    30	
    31		ret = setup_api_mount("/proc", "proc");
    32		if (ret)
    33			exit_failure("mount /proc", ret);
    34		ret = setup_api_mount("/sys", "sysfs");
    35		if (ret)
    36			exit_failure("mount /sys", ret);
    37		ret = setup_api_mount("/dev", "devtmpfs");
    38		if (ret && ((ret == -ENODEV) == IS_ENABLED(CONFIG_DEVTMPFS)))
    39			exit_failure("mount /dev", ret);
    40	
    41		ret = execve(argv[0], argv, envp);
    42		if (ret)
    43			exit_failure("execve", ret);
  > 44	}

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