85 lines
1.9 KiB
Objective-C
85 lines
1.9 KiB
Objective-C
// RUN: %clang %s -fsyntax-only -Xclang -verify -fblocks -Wunreachable-code-aggressive -Wno-unused-value -Wno-covered-switch-default
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// This previously triggered a warning from -Wunreachable-code because of
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// a busted CFG.
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typedef signed char BOOL;
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BOOL radar10989084() {
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@autoreleasepool { // no-warning
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return __objc_yes;
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}
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}
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// Test the warning works.
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void test_unreachable() {
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return;
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return; // expected-warning {{will never be executed}}
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}
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#define NO __objc_no
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#define YES __objc_yes
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#define CONFIG NO
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// Test that 'NO' and 'YES' are not treated as configuration macros.
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int test_NO() {
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if (NO)
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return 1; // expected-warning {{will never be executed}}
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else
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return 0;
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}
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int test_YES() {
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if (YES)
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return 1;
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else
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return 0; // expected-warning {{will never be executed}}
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}
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int test_CONFIG() {
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if (CONFIG)
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return 1;
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else
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return 0;
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}
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// FIXME: This should at some point report a warning
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// that the loop increment is unreachable.
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void test_loop_increment(id container) {
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for (id x in container) { // no-warning
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break;
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}
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}
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void calledFun() {}
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// Test "silencing" with parentheses.
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void test_with_paren_silencing(int x) {
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if (NO) calledFun(); // expected-warning {{will never be executed}} expected-note {{silence by adding parentheses to mark code as explicitly dead}}
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if ((NO)) calledFun(); // no-warning
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if (YES) // expected-note {{silence by adding parentheses to mark code as explicitly dead}}
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calledFun();
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else
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calledFun(); // expected-warning {{will never be executed}}
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if ((YES))
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calledFun();
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else
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calledFun(); // no-warning
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if (!YES) // expected-note {{silence by adding parentheses to mark code as explicitly dead}}
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calledFun(); // expected-warning {{code will never be executed}}
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else
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calledFun();
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if ((!YES))
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calledFun(); // no-warning
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else
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calledFun();
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if (!(YES))
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calledFun(); // no-warning
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else
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calledFun();
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}
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