tests: kernel: sleep: Fix uninitialised variable warning

stephanosio · stephanosio · commit 73dccf6e69bb · 2022-07-29T20:12:19.000+09:00
This commit sets an initial value of 0 for the `elapsed_ms` variable,
which may be used uninitialised when the while loop below does not
execute.

This fixes the "‘elapsed_ms’ may be used uninitialized" warning
generated by the GCC 12.

Signed-off-by: Stephanos Ioannidis &lt;root@stephanos.io&gt;
diff --git a/tests/kernel/sleep/src/usleep.c b/tests/kernel/sleep/src/usleep.c
@@ -65,7 +65,7 @@
 ZTEST_USER(sleep, test_usleep)
 {
 	int retries = 0;
-	int64_t elapsed_ms;
+	int64_t elapsed_ms = 0;
 
 	while (retries < RETRIES) {
 		int64_t start_ms;

Original file line number	Diff line number	Diff line change
`@@ -65,7 +65,7 @@`
`65`	`65`	`ZTEST_USER(sleep, test_usleep)`
`66`	`66`	`{`
`67`	`67`	`int retries = 0;`
`68`		`- int64_t elapsed_ms;`
	`68`	`+ int64_t elapsed_ms = 0;`
`69`	`69`
`70`	`70`	`while (retries < RETRIES) {`
`71`	`71`	`int64_t start_ms;`