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feat: make public headers consumable as C++20 in compat mode - #936

Merged

wgtmac merged 15 commits into

apache:mainfrom

PingLiuPing:cxx20-public-headers

Oct 9, 2026

Merged

feat: make public headers consumable as C++20 in compat mode#936
wgtmac merged 15 commits into
apache:mainfrom
PingLiuPing:cxx20-public-headers

Commits on Oct 9, 2026
- restore the vendored iceberg::expected backport, updated to zeus-cpp/expected v1.4.0
  
  authored and
  wgtmac
  committed
  0e6fbd3
- let iceberg::expected hold a value type with no default constructor
  
  PingLiuPing
  authored and
  wgtmac
  committed
  e0e54d3
- make Result portable by aliasing it to iceberg::expected
  
  PingLiuPing
  authored and
  wgtmac
  committed
  ca1a06a
- replace the remaining C++23 library features in public headers
  
  PingLiuPing
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  wgtmac
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  3c4473d
- drop deducing this from TaskGroup
  
  PingLiuPing
  authored and
  wgtmac
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  4b54836
- give ErrorCollector::AddError a C++20 form
  
  PingLiuPing
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  wgtmac
  committed
  92ba9f5
- give SnapshotUpdate's chaining setters a C++20 form
  
  PingLiuPing
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  wgtmac
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  f8ffbc2
- build the example as C++20
  
  PingLiuPing
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  wgtmac
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  f692d97
- Fix pre-commit
  
  PingLiuPing
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  wgtmac
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  e0ee232
- Removed invalid e1.error() access on a successful expected<void, int>
  
  PingLiuPing
  authored and
  wgtmac
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  c217e89
- Fix windows build
  
  PingLiuPing
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  wgtmac
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  a75609f
- expose ICEBERG_EXAMPLE_CXX_STANDARD and update docs to state C++20 as minimum standard for public headers
  
  PingLiuPing
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  wgtmac
  committed
  1e02e7e
- add C++20 public header compatibility check
  
  PingLiuPing
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  wgtmac
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  dcc4af0
- keep a single API shape for ErrorCollector and SnapshotUpdate
  
  PingLiuPing
  authored and
  wgtmac
  committed
  7256edf
- feat: add opt-in C++20 compatibility mode for public APIs
  wgtmac
  committed
  79e341e

Commits

Commits on Oct 9, 2026