tree 90839fe4e0e67267049a612589f4ca862580c3e0
parent fc076f5a1deef390f4c988985a0036c2fdda40f5
author Keith Packard <keithp@keithp.com> 1675832459 -0800
committer Stephanos Ioannidis <root@stephanos.io> 1681426181 +0900

samples, tests, boards: Switch main return type from void to int

As both C and C++ standards require applications running under an OS to
return 'int', adapt that for Zephyr to align with those standard. This also
eliminates errors when building with clang when not using -ffreestanding,
and reduces the need for compiler flags to silence warnings for both clang
and gcc.

Most of these changes were automated using coccinelle with the following
script:

@@
@@
- void
+ int
main(...) {
	...
-	return;
+	return 0;
	...
}

Approximately 40 files had to be edited by hand as coccinelle was unable to
fix them.

Signed-off-by: Keith Packard <keithp@keithp.com>