Improvements to code-generation and semantic analysis of designated

initializers.

  - We now initialize unions properly when a member other than the
    first is named by a designated initializer.
  - We now provide proper semantic analysis and code generation for
    GNU array-range designators *except* that side effects will occur
    more than once. We warn about this.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63253 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 1 deletions

diff --git a/lib/CodeGen/CGExprConstant.cpp b/lib/CodeGen/CGExprConstant.cpp
index 87868ed347..b05048c946 100644
--- a/lib/CodeGen/CGExprConstant.cpp
+++ b/lib/CodeGen/CGExprConstant.cpp
@@ -246,12 +246,22 @@ public:
     // first field
     int FieldNo = 0; // Field no in RecordDecl
     FieldDecl* curField = 0;
+    bool sawAnyFields = false;
     for (RecordDecl::field_iterator Field = RD->field_begin(),
                                  FieldEnd = RD->field_end();
          Field != FieldEnd; ++Field) {
       curField = *Field;
       FieldNo++;
-      if (curField->getIdentifier())
+
+      if (curField->isUnnamedBitfield())
+        continue;
+
+      // If we have an initializer, find the field whose type is the
+      // same as that initializer. This 
+      sawAnyFields = true;
+      if (ILE->getNumInits() > 0 &&
+          CGM.getContext().getCanonicalType(curField->getType()) ==
+            CGM.getContext().getCanonicalType(ILE->getInit(0)->getType()))
         break;
     }