55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
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// RUN: %clang_analyze_cc1 -analyzer-checker=core,unix \
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// RUN: -analyzer-disable-checker=core.uninitialized \
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// RUN: -verify %s
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// NOTE: These tests correspond to examples provided in documentation
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// of [[clang::suppress]]. If you break them intentionally, it's likely that
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// you need to update the documentation!
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typedef __typeof(sizeof(int)) size_t;
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void *malloc(size_t);
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int foo_initial() {
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int *x = nullptr;
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return *x; // expected-warning{{Dereference of null pointer (loaded from variable 'x')}}
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}
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int foo1() {
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int *x = nullptr;
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[[clang::suppress]]
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return *x; // null pointer dereference warning suppressed here
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}
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int foo2() {
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[[clang::suppress]] {
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int *x = nullptr;
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return *x; // null pointer dereference warning suppressed here
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}
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}
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int bar_initial(bool coin_flip) {
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int *result = (int *)malloc(sizeof(int));
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if (coin_flip)
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return 1; // There's no warning here YET, but it will show up if the other one is suppressed.
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return *result; // expected-warning{{Potential leak of memory pointed to by 'result'}}
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}
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int bar1(bool coin_flip) {
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__attribute__((suppress))
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int *result = (int *)malloc(sizeof(int));
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if (coin_flip)
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return 1; // warning about this leak path is suppressed
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return *result; // warning about this leak path also suppressed
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}
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int bar2(bool coin_flip) {
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int *result = (int *)malloc(sizeof(int));
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if (coin_flip)
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return 1; // expected-warning{{Potential leak of memory pointed to by 'result'}}
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__attribute__((suppress))
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return *result; // leak warning is suppressed only on this path
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}
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