libubox/tests/test-b64_decode.c

#include "utils.h"

int main()
{
	b64_decode("Zg==", NULL, 2);
	return 0;
}
base64: fix possible null pointer dereference clang-10 analyzer reports following: base64.c:325:20: warning: Array access (from variable 'target') results in a null pointer dereference target[tarindex] = 0; ~~~~~~ ^ and prepared test case confirms it: Invalid write of size 1 at 0x4E4463F: b64_decode (base64.c:325) by 0x40088C: test_invalid_inputs (tests/test-base64.c:26) by 0x40088C: main (tests/test-base64.c:32) Address 0x1 is not stack'd, malloc'd or (recently) free'd Process terminating with default action of signal 11 (SIGSEGV) Access not within mapped region at address 0x1 at 0x4E4463F: b64_decode (base64.c:325) by 0x40088C: test_invalid_inputs (tests/test-base64.c:26) by 0x40088C: main (tests/test-base64.c:32) Signed-off-by: Petr Štetiar <ynezz@true.cz> 2019-11-19 17:16:40 +01:00			`#include "utils.h"`

			`int main()`
			`{`
			`b64_decode("Zg==", NULL, 2);`
			`return 0;`
			`}`