`range check failed` because type `Natural` is used for address values
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- Dominant language
- Ada
- Stars
- 71
- Forks
- 41
- PR merge metrics
- No merged PRs in 30d
Description
Some of the SVD files in CMSIS_SVD lead to CONSTRAINT_ERROR exceptions because type Natural is too small to store address values.
This can be reproduced for example with M1AGL.svd.
The following error is raised by svd2ada:
raised CONSTRAINT_ERROR : base_types.adb:218 range check failed
In my system (linux 64-bit), type Natural has a max value of 2147483647, i.e. 0x7FFFFFFF. As a result of this, svd2ada fails to process address or size values which are greater than this upper limit.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the failure with CMSIS-SVD/Microsemi/M1AGL.svd and inspect base_types.adb around line 218, where the range check is raised. Confirm that svd2ada can process address and size values above 0x7FFFFFFF without a CONSTRAINT_ERROR.
Written by the indexing model from the issue text.
Assessment
- Domain
- embedded-iot, tooling
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100