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40 lines
728 B
40 lines
728 B
4 months ago
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// RUN: %clangxx -w -fsanitize=signed-integer-overflow,nullability-return,returns-nonnull-attribute -fsanitize-recover=all %s -o %t && %run %t 2>&1 | FileCheck %s
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#include <stdint.h>
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#include <stdio.h>
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int *_Nonnull h() {
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// CHECK: nullability-return
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return NULL;
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}
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__attribute__((returns_nonnull))
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int *i() {
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// CHECK: nonnull-return
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return NULL;
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}
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__attribute__((noinline))
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int f(int x, int y) {
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// CHECK: mul-overflow
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return x * y;
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}
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__attribute__((noinline))
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int g(int x, int y) {
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// CHECK: mul-overflow
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return x * (y + 1);
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}
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int main() {
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h();
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i();
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int x = 2;
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for (int i = 0; i < 10; ++i)
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x = f(x, x);
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x = 2;
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for (int i = 0; i < 10; ++i)
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x = g(x, x);
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// CHECK-NOT: mul-overflow
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}
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