derek.holloway
7502bf64a4
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45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
// RUN: %clangxx -fsanitize=returns-nonnull-attribute -w %s -O3 -o %t
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// RUN: %run %t foo 2>&1 | FileCheck %s --check-prefix=NOERROR --allow-empty --implicit-check-not='runtime error'
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// RUN: %run %t 2>&1 | FileCheck %s
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// RUN: %clangxx -fsanitize=returns-nonnull-attribute -fno-sanitize-recover=returns-nonnull-attribute -w %s -O3 -o %t.abort
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// RUN: not %run %t.abort &> /dev/null
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__attribute__((returns_nonnull)) char *foo(char *a);
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char *foo(char *a) {
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// CHECK: nonnull.cpp:[[@LINE+2]]:3: runtime error: null pointer returned from function declared to never return null
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// CHECK-NEXT: nonnull.cpp:[[@LINE-4]]:16: note: returns_nonnull attribute specified here
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return a;
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}
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__attribute__((returns_nonnull)) char *bar(int x, char *a) {
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if (x > 10) {
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// CHECK: nonnull.cpp:[[@LINE+2]]:5: runtime error: null pointer returned from function declared to never return null
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// CHECK-NEXT: nonnull.cpp:[[@LINE-3]]:16: note: returns_nonnull attribute specified here
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return a;
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} else {
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// CHECK: nonnull.cpp:[[@LINE+2]]:5: runtime error: null pointer returned from function declared to never return null
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// CHECK-NEXT: nonnull.cpp:[[@LINE-7]]:16: note: returns_nonnull attribute specified here
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return a;
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}
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}
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int main(int argc, char **argv) {
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char *a = argv[1];
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foo(a);
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bar(20, a);
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// We expect to see a runtime error the first time we cover the "else"...
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bar(5, a);
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// ... but not a second time.
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// CHECK-NOT: runtime error
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bar(5, a);
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return 0;
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}
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// NOERROR-NOT: runtime error
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