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Change the _count fields to use pb_size_t datatype.

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Update issue 82
Status: FixedInGit
This commit is contained in:
Petteri Aimonen
2014-08-18 20:09:52 +03:00
parent 0b517b0778
commit 1dd9f1900f
8 changed files with 77 additions and 44 deletions
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15
docs/migration.rst
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@@ -31,6 +31,21 @@ functionality is not needed.
**Error indications:** Linker error: undefined reference to
*pb_field_iter_begin*, *pb_field_iter_next* or similar.
Change data type of field counts to pb_size_t
---------------------------------------------
**Rationale:** Often nanopb is used with small arrays, such as 255 items or
less. Using a full *size_t* field to store the array count wastes memory if
there are many arrays. There already exists parameters *PB_FIELD_16BIT* and
*PB_FIELD_32BIT* which tell nanopb what is the maximum size of arrays in use.
**Changes:** Generator will now use *pb_size_t* for the array *_count* fields.
The size of the type will be controlled by the *PB_FIELD_16BIT* and
*PB_FIELD_32BIT* compilation time options.
**Required actions:** Regenerate all *.pb.h* files. In some cases casts to the
*pb_size_t* type may need to be added in the user code when accessing the
*_count* fields.
Nanopb-0.2.9 (2014-08-09)
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