| 1 | // RUN: %clang_analyze_cc1 -analyzer-checker=core.NullDereference -analyzer-output=text -fno-caret-diagnostics %s 2>&1 | FileCheck %s |
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| 2 | |
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| 3 | void testA() { |
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| 4 | int *p = 0; |
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| 5 | *p = 1; |
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| 6 | |
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| 7 | // CHECK-LABEL: text-diagnostics.c:{{.*}}:6: warning: Dereference of null pointer (loaded from variable 'p') |
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| 8 | // CHECK-NEXT: text-diagnostics.c:[[@LINE-4]]:3: note: 'p' initialized to a null pointer value |
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| 9 | // CHECK-NEXT: text-diagnostics.c:[[@LINE-4]]:6: note: Dereference of null pointer (loaded from variable 'p') |
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| 10 | } |
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| 11 | |
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| 12 | void testB(int *q) { |
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| 13 | if (q) |
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| 14 | return; |
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| 15 | *q = 1; |
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| 16 | |
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| 17 | // CHECK-LABEL: text-diagnostics.c:{{.*}}:6: warning: Dereference of null pointer (loaded from variable 'q') |
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| 18 | // CHECK-NEXT: text-diagnostics.c:[[@LINE-5]]:7: note: Assuming 'q' is null |
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| 19 | // CHECK-NEXT: text-diagnostics.c:[[@LINE-6]]:3: note: Taking false branch |
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| 20 | // CHECK-NEXT: text-diagnostics.c:[[@LINE-5]]:6: note: Dereference of null pointer (loaded from variable 'q') |
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| 21 | } |
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| 22 | |
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