1 files changed, 8 insertions, 4 deletions
diff --git a/chromium/third_party/blink/renderer/core/layout/ng/ng_constraint_space_builder.h b/chromium/third_party/blink/renderer/core/layout/ng/ng_constraint_space_builder.h
index 17b4d018433..b773e07908c 100644
--- a/chromium/third_party/blink/renderer/core/layout/ng/ng_constraint_space_builder.h
+++ b/chromium/third_party/blink/renderer/core/layout/ng/ng_constraint_space_builder.h
@@ -133,14 +133,18 @@ class CORE_EXPORT NGConstraintSpaceBuilder final {
       space_.EnsureRareData()->fragmentainer_block_size = size;
   }
 
-  // Shrink the fragmentainer block-size, to reserve space at the end. This is
-  // needed for repeated table footers.
-  void ReserveSpaceAtFragmentainerEnd(LayoutUnit space) {
+  // Shrink the fragmentainer block-size, to reserve space for repeated table
+  // headers and footers. If there's a repeated header, the argument to
+  // SetFragmentainerOffset() also needs to be compensated for the block-size
+  // taken up by the repeated header, so that offset 0 is exactly where the
+  // non-repeated content starts / resumes after the repeated header.
+  void ReserveSpaceInFragmentainer(LayoutUnit space) {
 #if DCHECK_IS_ON()
     DCHECK(is_fragmentainer_block_size_set_);
 #endif
-    DCHECK_GE(space_.rare_data_->fragmentainer_block_size, space);
     space_.rare_data_->fragmentainer_block_size -= space;
+    space_.rare_data_->fragmentainer_block_size =
+        space_.rare_data_->fragmentainer_block_size.ClampNegativeToZero();
   }
 
   void SetFragmentainerOffset(LayoutUnit offset) {