Fix patch reporting for CXXAssignConst

lib/Mutators/CXX/NumberMutators.cpp

@@ -19,7 +19,8 @@ std::string NumberAssignConst::ID() {
 
 NumberAssignConst::NumberAssignConst()
     : TrivialCXXMutator(getNumberMutators(), MutatorKind::CXX_AssignConst, NumberAssignConst::ID(),
-                        "Replaces 'a = b' with 'a = 42'", "42", "Replaced 'a = b' with 'a = 42'") {}
+                        "Replaces 'a = b' with 'a = 42'", "= 42;",
+                        "Replaced 'a = b' with 'a = 42'") {}
 
 std::string NumberInitConst::ID() {
   return "cxx_init_const";

tests-lit/tests/reporters/patch-reporter/cxx_assign_const/main.cpp

@@ -0,0 +1,32 @@
+// clang-format off
+void assign(int *x, int y) {
+  x[0] = y;
+}
+
+int main() {
+  int x = 15;
+  assign(&x, 10);
+
+  return 0;
+}
+
+/**
+
+RUN: cd %S
+RUN: mkdir -p %S/Output/sandbox
+RUN: cp %S/main.cpp %S/Output/sandbox/main.cpp
+RUN: cd %S/Output/sandbox
+
+/// We cd to the the test directory and compile using relative paths.
+RUN: cd %S; %clang_cxx %sysroot -O0 %pass_mull_ir_frontend -g Output/sandbox/main.cpp -o Output/main.cpp-ir.exe
+
+RUN: cd %S/Output; (unset TERM; %mull_runner -debug ./main.cpp-ir.exe --report-name test-ir --reporters Patches --reporters IDE; test $? = 0; ls -R %S/Output/test-ir-patches; cd %S/Output/test-ir-patches; cat `ls`) | %filecheck %s --dump-input=fail --strict-whitespace --match-full-lines
+
+CHECK:[debug] Writing Patchfile: {{.*}}
+CHECK:[info] Patchfiles can be found at './test{{.*}}-patches'
+CHECK:survived-{{.*}}main_cpp{{.*}}
+CHECK:--- a/{{.*}}/Output/sandbox/main.cpp 0
+CHECK:+++ b/{{.*}}/Output/sandbox/main.cpp 0
+CHECK:+{{\s+}}x[0] = 42; y;
+
+*/

tests-lit/tests/reporters/patch-reporter/cxx_assign_const/mull.yml

@@ -0,0 +1,3 @@
+mutators:
+  - cxx_assign_const
+quiet: false