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| author | Hrutvik Kanabar <hrutvik@google.com> | 2022-10-25 10:13:51 +0000 |
|---|---|---|
| committer | Aleksandr Nogikh <wp32pw@gmail.com> | 2022-11-21 11:06:14 +0100 |
| commit | d0405298b24db0e2a6b2abfdc8c7e5ebbe49d1a0 (patch) | |
| tree | c022669ce377e0c09376d60b45a01584c67c0989 /pkg/compiler/testdata/errors.txt | |
| parent | 7954d07c228dd9ce63b7ebd13239b4d1f2c35233 (diff) | |
prog, pkg/compiler: add `BufferCompressed` buffer type & `compressed_image` builtin
Create the `BufferCompressed` kind of `BufferType`, which will be used
to represent compressed data. Create the corresponding `compressed_image`
syzlang builtin, which is backed by `BufferCompressed`. For now, no
syscalls use this feature - this will be introduced in future commits.
We have to be careful to decompress the data before mutating, and
re-compress before storing. We make sure that any deserialised
`BufferCompressed` data is valid too.
`BufferCompressed` arguments are mutated using a generic heatmap. In
future, we could add variants of `BufferCompressed` or populate the
`BufferType` sub-kind, using it to choose different kinds of heatmap for
different uncompressed data formats.
Various operations on compressed data must be forbidden, so we check for
`BufferCompressed` in key places. We also have to ensure `compressed_image`
can only be used in syscalls that are marked `no_{generate,minimize}`.
Therefore, we add a generic compiler check which allows type
descriptions to require attributes on the syscalls which use them.
Diffstat (limited to 'pkg/compiler/testdata/errors.txt')
| -rw-r--r-- | pkg/compiler/testdata/errors.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/pkg/compiler/testdata/errors.txt b/pkg/compiler/testdata/errors.txt index 1201fa361..9d625a34b 100644 --- a/pkg/compiler/testdata/errors.txt +++ b/pkg/compiler/testdata/errors.txt @@ -422,3 +422,6 @@ union$directions [ f1 int32 (in) ### unknown arg/field f1 attribute in f2 int32 (out) ### unknown arg/field f2 attribute out ] + + +compressed$test(a int32) compressed_image ### compressed_image can't be syscall return |