diff options
Diffstat (limited to 'src/compiler/blob.h')
| -rw-r--r-- | src/compiler/blob.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/compiler/blob.h b/src/compiler/blob.h index e23e392eedd..ec80b78284c 100644 --- a/src/compiler/blob.h +++ b/src/compiler/blob.h @@ -96,6 +96,10 @@ blob_init(struct blob *blob); * A fixed-size blob has a fixed block of data that will not be freed on * blob_finish and will never be grown. If we hit the end, we simply start * returning false from the write functions. + * + * If a fixed-size blob has a NULL data pointer then the data is written but + * it otherwise operates normally. This can be used to determine the size + * that will be required to write a given data structure. */ void blob_init_fixed(struct blob *blob, void *data, size_t size); |