Hello Andy Lutomirski,
The patch 0eb1d0fa6a68: "selftests/x86: Add a basic selftest for
ioperm" from Feb 22, 2017, leads to the following static checker
warning:
tools/testing/selftests/x86/ioperm.c:64 try_outb()
info: ignoring unreachable code.
tools/testing/selftests/x86/ioperm.c
54 static bool try_outb(unsigned short port)
55 {
56 sethandler(SIGSEGV, sigsegv, SA_RESETHAND);
57 if (sigsetjmp(jmpbuf, 1) != 0) {
58 return false;
59 } else {
60 asm volatile ("outb %%al, %w[port]"
61 : : [port] "Nd" (port), "a" (0));
62 return true;
63 }
64 clearhandler(SIGSEGV);
^^^^^^^^^^^^^^^^^^^^^
Not reachable.
65 }
regards,
dan carpenter
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