Mar 29, 2023 · Mar 7, 2023 · Mar 7, 2023
diff --git a/c/misra/src/rules/RULE-20-12/MacroParameterUsedAsHashOperand.ql b/c/misra/src/rules/RULE-20-12/MacroParameterUsedAsHashOperand.ql

 from FunctionLikeMacro m, MacroInvocation mi, int i, string expanded, string param
 where
  not isExcluded(m, Preprocessor2Package::macroParameterUsedAsHashOperandQuery()) and
  not isExcluded(mi, Preprocessor2Package::macroParameterUsedAsHashOperandQuery()) and
  mi = m.getAnInvocation() and
  param = m.getParameter(i) and
  (
  // This check ensure there is an expansion that is used.
  expanded = mi.getExpandedArgument(i) and
  not expanded = "" and
  exists(Macro furtherExpandedMacro |
    mi.getUnexpandedArgument(i).matches(furtherExpandedMacro.getName() + "%")
  )
  not mi.getUnexpandedArgument(i) = mi.getExpandedArgument(i)
 select m,
  "Macro " + m.getName() + " contains use of parameter " + m.getParameter(i) +
    " used in multiple contexts."
  "Macro " + m.getName() + " contains use of parameter " + param + " used in multiple contexts."
diff --git a/change_notes/2023-03-07-20-12-perf.md b/change_notes/2023-03-07-20-12-perf.md
 *`Rule 20.12` - the performance of this rule has been improved.
Original file line number	Diff line number	Diff line change
Expand Up		@@ -19,7 +19,7 @@ import codingstandards.cpp.Macro

		from FunctionLikeMacro m, MacroInvocation mi, int i, string expanded, string param
		where
		not isExcluded(m, Preprocessor2Package::macroParameterUsedAsHashOperandQuery()) and
		not isExcluded(mi, Preprocessor2Package::macroParameterUsedAsHashOperandQuery()) and
		mi = m.getAnInvocation() and
		param = m.getParameter(i) and
		(
Expand All		@@ -31,9 +31,6 @@ where
		// This check ensure there is an expansion that is used.
		expanded = mi.getExpandedArgument(i) and
		not expanded = "" and
		exists(Macro furtherExpandedMacro \|
		mi.getUnexpandedArgument(i).matches(furtherExpandedMacro.getName() + "%")
		)
		not mi.getUnexpandedArgument(i) = mi.getExpandedArgument(i)
		select m,
		"Macro " + m.getName() + " contains use of parameter " + m.getParameter(i) +
		" used in multiple contexts."
		"Macro " + m.getName() + " contains use of parameter " + param + " used in multiple contexts."
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		*`Rule 20.12` - the performance of this rule has been improved.