[Coverage] Add coverage for constructor member initializers. (#66441)

Before, constructor member initializers are shown as not covered. This
adds coverage info for them.

1 files changed, 10 insertions, 1 deletions

diff --git a/clang/lib/CodeGen/CoverageMappingGen.cpp b/clang/lib/CodeGen/CoverageMappingGen.cpp
index 7cc2e06..bb814df 100644
--- a/clang/lib/CodeGen/CoverageMappingGen.cpp
+++ b/clang/lib/CodeGen/CoverageMappingGen.cpp
@@ -1036,11 +1036,20 @@ struct CounterCoverageMappingBuilder
     // lexer may not be able to report back precise token end locations for
     // these children nodes (llvm.org/PR39822), and moreover users will not be
     // able to see coverage for them.
+    Counter BodyCounter = getRegionCounter(Body);
     bool Defaulted = false;
     if (auto *Method = dyn_cast<CXXMethodDecl>(D))
       Defaulted = Method->isDefaulted();
+    if (auto *Ctor = dyn_cast<CXXConstructorDecl>(D)) {
+      for (auto *Initializer : Ctor->inits()) {
+        if (Initializer->isWritten()) {
+          auto *Init = Initializer->getInit();
+          propagateCounts(BodyCounter, Init);
+        }
+      }
+    }
 
-    propagateCounts(getRegionCounter(Body), Body,
+    propagateCounts(BodyCounter, Body,
                     /*VisitChildren=*/!Defaulted);
     assert(RegionStack.empty() && "Regions entered but never exited");
   }