From: Maria Celeste Cesario
The xen sources contain violations of MISRA C:2012 Rule 14.4 whose
headline states:
"The controlling expression of an if statement and the controlling
expression of an iteration-statement shall have essentially Boolean type".
Struct domain member is_dying is an anonymous enum designed to act as boolean.
Add deviation to mark its uses in controlling expressions as deliberate.
Signed-off-by: Maria Celeste Cesario
Signed-off-by: Simone Ballarin
---
automation/eclair_analysis/ECLAIR/deviations.ecl | 6 ++
docs/misra/deviations.rst| 6 ++
2 files changed, 12 insertions(+)
diff --git a/automation/eclair_analysis/ECLAIR/deviations.ecl
b/automation/eclair_analysis/ECLAIR/deviations.ecl
index b0c79741b5..683f2bbfe8 100644
--- a/automation/eclair_analysis/ECLAIR/deviations.ecl
+++ b/automation/eclair_analysis/ECLAIR/deviations.ecl
@@ -321,6 +321,12 @@ statements are deliberate"
-config=MC3R1.R14.3,statements={deliberate , "wrapped(any(),node(if_stmt))" }
-doc_end
+-doc_begin="The XEN team relies on the fact that the enum is_dying has the
+constant with assigned value 0 act as false and the other ones as true,
+therefore have the same behavior of a boolean"
+-config=MC3R1.R14.4,etypes+={deliberate,
"stmt(child(cond,child(expr,ref(^?::is_dying$","src_type(enum)"}
+-doc_end
+
#
# Series 20.
#
diff --git a/docs/misra/deviations.rst b/docs/misra/deviations.rst
index 6e7c4f25b8..eda3c8100c 100644
--- a/docs/misra/deviations.rst
+++ b/docs/misra/deviations.rst
@@ -270,6 +270,12 @@ Deviations related to MISRA C:2012 Rules:
statements are deliberate.
- Project-wide deviation; tagged as `disapplied` for ECLAIR.
+ * - R14.4
+ - The XEN team relies on the fact that the enum is_dying has the
+ constant with assigned value 0 act as false and the other ones as true,
+ therefore have the same behavior of a boolean.
+ - Project-wide deviation; tagged as `deliberate` for ECLAIR.
+
* - R20.7
- Code violating Rule 20.7 is safe when macro parameters are used:
(1) as function arguments;
--
2.40.0
