diff options
Diffstat (limited to 'absl/strings/internal/cord_internal.h')
| -rw-r--r-- | absl/strings/internal/cord_internal.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/absl/strings/internal/cord_internal.h b/absl/strings/internal/cord_internal.h index fcca3a28..6022c1df 100644 --- a/absl/strings/internal/cord_internal.h +++ b/absl/strings/internal/cord_internal.h @@ -225,7 +225,11 @@ struct CordRep { : length(l), refcount(immortal), tag(EXTERNAL), storage{} {} // The following three fields have to be less than 32 bytes since - // that is the smallest supported flat node size. + // that is the smallest supported flat node size. Some code optimizations rely + // on the specific layout of these fields. Notably: the non-trivial field + // `refcount` being preceeded by `length`, and being tailed by POD data + // members only. + // # LINT.IfChange size_t length; RefcountAndFlags refcount; // If tag < FLAT, it represents CordRepKind and indicates the type of node. @@ -241,6 +245,7 @@ struct CordRep { // allocate room for these in the derived class, as not all compilers reuse // padding space from the base class (clang and gcc do, MSVC does not, etc) uint8_t storage[3]; + // # LINT.ThenChange(cord_rep_btree.h:copy_raw) // Returns true if this instance's tag matches the requested type. constexpr bool IsRing() const { return tag == RING; } |