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// RUN: %clang_cc1 -fsyntax-only -verify %s
#define PLACE_IN_TCB(NAME) __attribute__ ((enforce_tcb(NAME)))
#define PLACE_IN_TCB_LEAF(NAME) __attribute__ ((enforce_tcb_leaf(NAME)))
void foo1 (void) PLACE_IN_TCB("bar");
void foo2 (void) PLACE_IN_TCB("bar");
void foo3 (void); // not in any TCB
void foo4 (void) PLACE_IN_TCB("bar2");
void foo5 (void) PLACE_IN_TCB_LEAF("bar");
void foo6 (void) PLACE_IN_TCB("bar2") PLACE_IN_TCB("bar");
void foo7 (void) PLACE_IN_TCB("bar3");
void foo8 (void) PLACE_IN_TCB("bar") PLACE_IN_TCB("bar2");
void foo9 (void);
void foo1() {
foo2(); // OK - function in same TCB
foo3(); // expected-warning {{calling 'foo3' is a violation of trusted computing base 'bar'}}
foo4(); // expected-warning {{calling 'foo4' is a violation of trusted computing base 'bar'}}
foo5(); // OK - in leaf node
foo6(); // OK - in multiple TCBs, one of which is the same
foo7(); // expected-warning {{calling 'foo7' is a violation of trusted computing base 'bar'}}
(void) __builtin_clz(5); // OK - builtins are excluded
}
// Normal use without any attributes works
void foo3() {
foo9(); // no-warning
}
void foo5() {
// all calls should be okay, function in TCB leaf
foo2(); // no-warning
foo3(); // no-warning
foo4(); // no-warning
}
void foo6() {
foo1(); // expected-warning {{calling 'foo1' is a violation of trusted computing base 'bar2'}}
foo4(); // expected-warning {{calling 'foo4' is a violation of trusted computing base 'bar'}}
foo8(); // no-warning
foo7(); // #1
// expected-warning@#1 {{calling 'foo7' is a violation of trusted computing base 'bar2'}}
// expected-warning@#1 {{calling 'foo7' is a violation of trusted computing base 'bar'}}
}
// Ensure that attribute merging works as expected across redeclarations.
void foo10() PLACE_IN_TCB("bar");
void foo10() PLACE_IN_TCB("bar2");
void foo10() PLACE_IN_TCB("bar3");
void foo10() {
foo1(); // #2
// expected-warning@#2 {{calling 'foo1' is a violation of trusted computing base 'bar2'}}
// expected-warning@#2 {{calling 'foo1' is a violation of trusted computing base 'bar3'}}
foo3(); // #3
// expected-warning@#3 {{calling 'foo3' is a violation of trusted computing base 'bar'}}
// expected-warning@#3 {{calling 'foo3' is a violation of trusted computing base 'bar2'}}
// expected-warning@#3 {{calling 'foo3' is a violation of trusted computing base 'bar3'}}
foo4(); // #4
// expected-warning@#4 {{calling 'foo4' is a violation of trusted computing base 'bar'}}
// expected-warning@#4 {{calling 'foo4' is a violation of trusted computing base 'bar3'}}
foo7(); // #5
// expected-warning@#5 {{calling 'foo7' is a violation of trusted computing base 'bar'}}
// expected-warning@#5 {{calling 'foo7' is a violation of trusted computing base 'bar2'}}
}
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