Re: [PATCH] selftests/net: initialize char variable to null

Ankit Khushwaha wrote:

On Mon, Nov 24, 2025 at 12:46:52PM -0500, Willem de Bruijn wrote:

quoted

Ankit Khushwaha wrote:

quoted

char variable in 'so_txtime.c' & 'txtimestamp.c' left uninitilized
by when switch default case taken. raises following warning.

	txtimestamp.c:240:2: warning: variable 'tsname' is used uninitialized
	whenever switch default is taken [-Wsometimes-uninitialized]

	so_txtime.c:210:3: warning: variable 'reason' is used uninitialized
	whenever switch default is taken [-Wsometimes-uninitialized]

initialize these variables to NULL to fix this.

Signed-off-by: Ankit Khushwaha <redacted>

These are false positives as the default branches in both cases exit
the program with error(..).

Since we do not observe these in normal kernel compilations: are you
enabling non-standard warnings?

Hi Willem,

this warning appeared while building the 'tools/testing/selftests/net'
multiple times. 
Cmd used to build
	make -C tools/testing/selftests/net  CC=clang V=1 -j8

while test building by "make -C tools/testing/selftests/ CC=clang V=1
-j8" doesn't raises these warning.

This does not reproduce for me.

Can you share the full clang command that V=1 outputs, as well as the
output oof clang --version.