31 lines
695 B
C
31 lines
695 B
C
// RUN: %clang_analyze_cc1 -analyzer-checker=core -verify %s
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int test1() {
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int *p = (int *)sizeof(int);
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p -= 1;
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return *p; // expected-warning {{Dereference of null pointer}}
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}
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int test2() {
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int *p = (int *)sizeof(int);
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p -= 2;
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p += 1;
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return *p; // expected-warning {{Dereference of null pointer}}
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}
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int test3() {
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int *p = (int *)sizeof(int);
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p++;
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p--;
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p--;
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return *p; // expected-warning {{Dereference of null pointer}}
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}
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int test4() {
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// This is a special case where pointer arithmetic is not calculated to
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// preserve useful warnings on dereferences of null pointers.
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int *p = 0;
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p += 1;
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return *p; // expected-warning {{Dereference of null pointer}}
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}
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