1 # MISRA Compliance for FreeRTOS-Kernel
2 FreeRTOS-Kernel is MISRA C:2012 compliant. This directory contains a project to
3 run [Synopsys Coverity](https://www.synopsys.com/software-integrity/security-testing/static-analysis-sast.html)
4 for checking MISRA compliance.
7 Coverity version 2022.6.1 incorrectly infers the type of `pdTRUE` and `pdFALSE`
8 as boolean because of their names, resulting in multiple false positive warnings
9 about type mismatch. We replace `pdTRUE` with `pdPASS` and `pdFALSE` with
10 `pdFAIL` to avoid these false positive warnings. This workaround will not be
11 needed after Coverity fixes the issue of incorrectly inferring the type of
12 `pdTRUE` and `pdFALSE` as boolean.
14 Deviations from the MISRA C:2012 guidelines are documented in
15 [MISRA.md](../../MISRA.md) and [coverity_misra.config](coverity_misra.config)
20 Coverity can be run on any platform mentioned [here](https://sig-docs.synopsys.com/polaris/topics/c_coverity-compatible-platforms.html).
21 The following are the prerequisites to generate coverity report:
23 1. CMake version > 3.13.0 (You can check whether you have this by typing `cmake --version`).
25 - See download and installation instructions [here](https://gcc.gnu.org/install/).
26 3. Clone the repo using the following command:
27 - `git clone https://github.com/FreeRTOS/FreeRTOS-Kernel.git ./FreeRTOS-Kernel`
30 Go to the root directory of the FreeRTOS-Kernel repo and run the following
31 commands in a terminal:
32 1. Update the compiler configuration in Coverity:
34 cov-configure --force --compiler cc --comptype gcc
36 2. Create the build files using CMake in a `build` directory:
38 cmake -B build -S examples/coverity
40 3. Build the (pseudo) application:
43 cov-build --emit-complementary-info --dir cov-out make
45 4. Go to the Coverity output directory (`cov-out`) and begin Coverity static
49 cov-analyze --dir ./cov-out \
50 --coding-standard-config ../examples/coverity/coverity_misra.config \
51 --tu-pattern "file('.*/FreeRTOS/Source/[A-Za-z_]*\.c')
53 5. Generate the HTML report:
55 cov-format-errors --dir ./cov-out --html-output html-output
58 HTML report should now be generated in a directory named `html-output`.