================
@@ -0,0 +1,81 @@
+// RUN: %check_clang_tidy -check-suffixes=ALL,NI %s 
bugprone-implicit-widening-of-multiplication-result %t -- -- -target 
x86_64-unknown-unknown -x c++
+// RUN: %check_clang_tidy -check-suffixes=ALL %s 
bugprone-implicit-widening-of-multiplication-result %t -- \
+// RUN:     -config='{CheckOptions: { \
+// RUN:         
bugprone-implicit-widening-of-multiplication-result.IgnoreConstantIntExpr: true 
\
+// RUN:     }}' -- -target x86_64-unknown-unknown -x c++
+
+long t0() {
+  return 1 * 4;
+  // CHECK-NOTES-NI: :[[@LINE-1]]:10: warning: performing an implicit widening 
conversion to type 'long' of a multiplication performed in type 'int'
----------------
PiotrZSL wrote:

Generic: use CHECK-MESSAGES instead of CHECK-NOTES if you can

https://github.com/llvm/llvm-project/pull/98352
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