=?utf-8?q?Donát?= Nagy <[email protected]>
Message-ID:
In-Reply-To: <llvm.org/llvm/llvm-project/pull/[email protected]>
================
@@ -109,6 +136,33 @@ int *potentialAfterTheEndPtr(int idx) {
// &TenElements[idx].
}
+int overflowOrUnderflow(int arg) {
+ // expected-note@+2 {{Assuming 'arg' is < 0}}
+ // expected-note@+1 {{Taking false branch}}
+ if (arg >= 0)
+ return 0;
+
+ return TenElements[arg - 1];
+ // expected-warning@-1 {{Out of bound access to memory around 'TenElements'}}
+ // expected-note@-2 {{Access of 'TenElements' at a negative or overflowing
index, while it holds only 10 'int' elements}}
+}
+
+char TwoElements[2] = {11, 22};
+char overflowOrUnderflowConcrete(int arg) {
+ // expected-note@+6 {{Assuming 'arg' is < 3}}
+ // expected-note@+5 {{Left side of '||' is false}}
+ // expected-note@+4 {{Assuming 'arg' is not equal to 0}}
+ // expected-note@+3 {{Left side of '||' is false}}
+ // expected-note@+2 {{Assuming 'arg' is not equal to 1}}
+ // expected-note@+1 {{Taking false branch}}
+ if (arg >= 3 || arg == 0 || arg == 1)
----------------
steakhal wrote:
```suggestion
// expected-note@#cond {{Assuming 'arg' is < 3}}
// expected-note@#cond {{Left side of '||' is false}}
// expected-note@#cond {{Assuming 'arg' is not equal to 0}}
// expected-note@#cond {{Left side of '||' is false}}
// expected-note@#cond {{Assuming 'arg' is not equal to 1}}
// expected-note@#cond {{Taking false branch}}
if (arg >= 3 || arg == 0 || arg == 1) // #cond
```
https://github.com/llvm/llvm-project/pull/84201
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