v6-36: Record alignment of class in dictionary and use in TStreamerInfo#21976

Closed

pcanal wants to merge 29 commits intoroot-project:v6-36-00-patchesfrom

pcanal:v636-tclass-alignof

Commits on Apr 23, 2026

meta: Record alignment of class in dictionary
pcanal
committed
meta: Add alignment info for emulated collections
pcanal
committed
io: Micro-optimization in alignment calculation.

pcanal
and
silverweed
committed
io: Factor out alignment operation
pcanal
committed
meta: Use std::max_align_t instead of sizeof(void*)
pcanal
committed
io: Explicitly forbid collection with content aligned to more than 4096
pcanal
committed
meta: Add alignment info to TDataType
pcanal
committed
meta: Remove over alignment of emulated class
pcanal
committed
meta: Alignment extend code doc
pcanal
committed
meta: Take emulation header in consideration for alignment value
pcanal
committed
meta: Factor out and standardize alignment assert.
pcanal
committed
meta: Factor AlignUp function
pcanal
committed
io: Remove TGenCollectionProxy::AlignedAllocator
pcanal
committed
meta: Extend alignment asserts
pcanal
committed
io: Factor alignment calc for NewArray and DeleteArrray
pcanal
committed
Meta: Alignment calc for non-current StreamerInfo
pcanal
committed
io: Make missing alignment fatal
pcanal
committed
io: BuildOld set alignment for numerical types
pcanal
committed
io: Add comment on TStreamerInfo size and alignment for non-current TStreamerInfos
pcanal
committed
io: Set alignment for empty classes
pcanal
committed
meta: Implement TStreamerElement::GetAlignment.
pcanal
committed
io: Add proper alignment for base classes
pcanal
committed
io: Clarify error cases (missing alignment)
pcanal
committed
io: Add comment about matching new and delete for alignment
pcanal
committed
[meta] Bump class version of TDataType

hahnjo
authored and
pcanal
committed
[meta] Change type of TDataType::fAlignOf to UInt_t

hahnjo
authored and
pcanal
committed
io: Switch TDataType to TStreamerInfo based streamer
pcanal
committed
meta: prevent (unlikely) narrowing for alignment in TDataType
pcanal
committed
Release notes: add TClass alignment
pcanal
committed

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v6-36: Record alignment of class in dictionary and use in TStreamerInfo#21976

v6-36: Record alignment of class in dictionary and use in TStreamerInfo#21976
pcanal wants to merge 29 commits intoroot-project:v6-36-00-patchesfrom
pcanal:v636-tclass-alignof

Commits on Apr 23, 2026

meta: Record alignment of class in dictionary

meta: Add alignment info for emulated collections

io: Micro-optimization in alignment calculation.

io: Factor out alignment operation

meta: Use std::max_align_t instead of sizeof(void*)

io: Explicitly forbid collection with content aligned to more than 4096

meta: Add alignment info to TDataType

meta: Remove over alignment of emulated class

meta: Alignment extend code doc

meta: Take emulation header in consideration for alignment value

meta: Factor out and standardize alignment assert.

meta: Factor AlignUp function

io: Remove TGenCollectionProxy::AlignedAllocator

meta: Extend alignment asserts

io: Factor alignment calc for NewArray and DeleteArrray

Meta: Alignment calc for non-current StreamerInfo

io: Make missing alignment fatal

io: BuildOld set alignment for numerical types

io: Add comment on TStreamerInfo size and alignment for non-current TStreamerInfos

io: Set alignment for empty classes

meta: Implement TStreamerElement::GetAlignment.

io: Add proper alignment for base classes

io: Clarify error cases (missing alignment)

io: Add comment about matching new and delete for alignment

[meta] Bump class version of TDataType

[meta] Change type of TDataType::fAlignOf to UInt_t

io: Switch TDataType to TStreamerInfo based streamer

meta: prevent (unlikely) narrowing for alignment in TDataType

Release notes: add TClass alignment