forked from OSchip/llvm-project
64 lines
2.1 KiB
C++
64 lines
2.1 KiB
C++
// RUN: %clang_cc1 %s -triple i386-pc-linux-gnu -verify -fsyntax-only
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// RUN: %clang_cc1 %s -triple x86_64-pc-linux-gnu -verify -fsyntax-only
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struct NonTrivial {
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~NonTrivial();
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int f(int);
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private:
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int k;
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};
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void JumpDiagnostics(int n) {
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// expected-error@+1 {{cannot jump from this goto statement to its label}}
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goto DirectJump;
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// expected-note@+1 {{jump bypasses variable with a non-trivial destructor}}
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NonTrivial tnp1;
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DirectJump:
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// expected-error@+1 {{cannot jump from this asm goto statement to one of its possible targets}}
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asm goto("jmp %l0;" ::::Later);
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// expected-note@+1 {{jump bypasses variable with a non-trivial destructor}}
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NonTrivial tnp2;
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// expected-note@+1 {{possible target of asm goto statement}}
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Later:
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return;
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}
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struct S { ~S(); };
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void foo(int a) {
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if (a) {
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FOO:
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// expected-note@+2 {{jump exits scope of variable with non-trivial destructor}}
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// expected-note@+1 {{jump exits scope of variable with non-trivial destructor}}
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S s;
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void *p = &&BAR;
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// expected-error@+1 {{cannot jump from this asm goto statement to one of its possible targets}}
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asm goto("jmp %l0;" ::::BAR);
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// expected-error@+1 {{cannot jump from this indirect goto statement to one of its possible targets}}
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goto *p;
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p = &&FOO;
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goto *p;
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return;
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}
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// expected-note@+2 {{possible target of asm goto statement}}
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// expected-note@+1 {{possible target of indirect goto statement}}
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BAR:
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return;
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}
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//Asm goto:
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int test16(int n)
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{
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// expected-error@+2 {{cannot jump from this asm goto statement to one of its possible targets}}
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// expected-error@+1 {{cannot jump from this asm goto statement to one of its possible targets}}
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asm volatile goto("testl %0, %0; jne %l1;" :: "r"(n)::label_true, loop);
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// expected-note@+2 {{jump bypasses initialization of variable length array}}
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// expected-note@+1 {{possible target of asm goto statement}}
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return ({int a[n];label_true: 2;});
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// expected-note@+1 {{jump bypasses initialization of variable length array}}
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int b[n];
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// expected-note@+1 {{possible target of asm goto statement}}
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loop:
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return 0;
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}
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