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Diffstat (limited to 'tools/llvm-pdbdump/PrettyClassLayoutGraphicalDumper.cpp')
-rw-r--r--tools/llvm-pdbdump/PrettyClassLayoutGraphicalDumper.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/llvm-pdbdump/PrettyClassLayoutGraphicalDumper.cpp b/tools/llvm-pdbdump/PrettyClassLayoutGraphicalDumper.cpp
index 16cec82f718a..d11472679626 100644
--- a/tools/llvm-pdbdump/PrettyClassLayoutGraphicalDumper.cpp
+++ b/tools/llvm-pdbdump/PrettyClassLayoutGraphicalDumper.cpp
@@ -80,7 +80,8 @@ bool PrettyClassLayoutGraphicalDumper::start(const UDTLayoutBase &Layout) {
if (Item->getLayoutSize() > 0) {
uint32_t Prev = RelativeOffset + Item->getLayoutSize() - 1;
- NextPaddingByte = UseMap.find_next_unset(Prev);
+ if (Prev < UseMap.size())
+ NextPaddingByte = UseMap.find_next_unset(Prev);
}
}