8fbe78f6fc
- This is designed to make it obvious that %clang_cc1 is a "test variable" which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it can be useful to redefine what gets run as 'clang -cc1' (for example, to set a default target). llvm-svn: 91446
46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s
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// rdar://6425550
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int bar();
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void do_something(int);
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int *get_ptr();
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int foo() {
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if (int X = bar()) {
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return X;
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} else {
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do_something(X); // expected-warning{{'X' is always zero in this context}}
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return 0;
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}
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}
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bool foo2() {
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if (bool B = bar()) {
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if (int Y = bar()) {
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return B;
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} else {
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do_something(Y); // expected-warning{{'Y' is always zero in this context}}
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return B;
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}
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} else {
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if (bool B2 = B) { // expected-warning{{'B' is always false in this context}}
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do_something(B); // expected-warning{{'B' is always false in this context}}
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} else if (B2) { // expected-warning{{'B2' is always false in this context}}
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do_something(B); // expected-warning{{'B' is always false in this context}}
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do_something(B2); // expected-warning{{'B2' is always false in this context}}
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}
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return B; // expected-warning{{'B' is always false in this context}}
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}
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}
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void foo3() {
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if (int *P1 = get_ptr())
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do_something(*P1);
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else if (int *P2 = get_ptr()) {
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do_something(*P1); // expected-warning{{'P1' is always NULL in this context}}
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do_something(*P2);
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} else {
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do_something(*P1); // expected-warning{{'P1' is always NULL in this context}}
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do_something(*P2); // expected-warning{{'P2' is always NULL in this context}}
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}
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}
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