================
@@ -0,0 +1,194 @@
+// RUN: %clang_cc1 -fsyntax-only -fblocks -fcxx-exceptions -verify %s
+// These are in a separate file because errors (e.g. incompatible attributes)
currently prevent
+// the AnalysisBasedWarnings pass from running at all.
+
+// This diagnostic is re-enabled and exercised in isolation later in this file.
+#pragma clang diagnostic ignored "-Wperf-constraint-implies-noexcept"
+
+// --- CONSTRAINTS ---
+
+void nl1() [[clang::nonblocking]]
+{
+ auto* pInt = new int; // expected-warning {{'nonblocking' function must
not allocate or deallocate memory}}
+}
+
+void nl2() [[clang::nonblocking]]
+{
+ static int global; // expected-warning {{'nonblocking' function must
not have static locals}}
+}
+
+void nl3() [[clang::nonblocking]]
+{
+ try {
+ throw 42; // expected-warning {{'nonblocking' function must not
throw or catch exceptions}}
+ }
+ catch (...) { // expected-warning {{'nonblocking' function must not
throw or catch exceptions}}
+ }
+}
+
+void nl4_inline() {}
+void nl4_not_inline(); // expected-note {{function cannot be inferred
'nonblocking' because it has no definition in this translation unit}}
+
+void nl4() [[clang::nonblocking]]
+{
+ nl4_inline(); // OK
+ nl4_not_inline(); // expected-warning {{'nonblocking' function must not
call non-'nonblocking' function}}
+}
+
+
+struct HasVirtual {
+ virtual void unsafe(); // expected-note {{virtual method cannot be
inferred 'nonblocking'}}
+};
+
+void nl5() [[clang::nonblocking]]
+{
+ HasVirtual hv;
+ hv.unsafe(); // expected-warning {{'nonblocking' function must not call
non-'nonblocking' function}}
+}
+
+void nl6_unsafe(); // expected-note {{function cannot be inferred
'nonblocking' because it has no definition in this translation unit}}
+void nl6_transitively_unsafe()
+{
+ nl6_unsafe(); // expected-note {{function cannot be inferred
'nonblocking' because it calls non-'nonblocking' function}}
----------------
jroelofs wrote:
I think it would help to name the two functions in the diagnostic, i.e:
`function `n16_transitively_safe` cannot be inferred 'nonblocking' because it
calls non-'nonblocking' function 'n16_unsafe'`
https://github.com/llvm/llvm-project/pull/99656
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