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Correct a thinko in bitfield layout code. Fixes PR4611. 

llvm-svn: 76898
This commit is contained in:
Anders Carlsson 2009-07-23 21:16:33 +00:00
parent 2a5b83c7e6
commit 516e5e7835
2 changed files with 8 additions and 4 deletions
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6
clang/lib/CodeGen/CGRecordLayoutBuilder.cpp
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@ -88,10 +88,8 @@ void CGRecordLayoutBuilder::LayoutBitField(const FieldDecl *D,
AppendBytes(NumBytesToAppend); AppendBytes(NumBytesToAppend);
if (!NumBytesToAppend) BitsAvailableInLastField =
BitsAvailableInLastField -= FieldSize; getNextFieldOffsetInBytes() * 8 - (FieldOffset + FieldSize);
else
BitsAvailableInLastField = NumBytesToAppend * 8 - FieldSize;
} }
bool CGRecordLayoutBuilder::LayoutField(const FieldDecl *D, bool CGRecordLayoutBuilder::LayoutField(const FieldDecl *D,

6
clang/test/CodeGen/PR4611-bitfield-layout.c Normal file
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@ -0,0 +1,6 @@
// RUN: clang-cc -triple i386-unknown-unknown %s -emit-llvm -o %t &&
// RUN: grep "struct.object_entry = type <{ i8, i8, i8, i8 }>" %t
struct object_entry {
unsigned int type:3, pack_id:16, depth:13;
} entries;