[xen staging] misra: extend toolchain assumption about source character set

[patchbot@xxxxxxx]

commit c380923a52e6bb92732bec65be9d9d0a542c694c
Author:     Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
AuthorDate: Wed Dec 17 09:02:09 2025 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Wed Dec 17 09:02:09 2025 +0100

    misra: extend toolchain assumption about source character set
    
    Similar to the ARM64 compiler, the same assumptions can be made about
    the X86_64 toolchain.
    
    No functional change.
    
    Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
    Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 automation/eclair_analysis/ECLAIR/toolchain.ecl | 1 +
 docs/misra/C-language-toolchain.rst             | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/automation/eclair_analysis/ECLAIR/toolchain.ecl 
b/automation/eclair_analysis/ECLAIR/toolchain.ecl
index 842f8377e5..4bc88aa029 100644
--- a/automation/eclair_analysis/ECLAIR/toolchain.ecl
+++ b/automation/eclair_analysis/ECLAIR/toolchain.ecl
@@ -210,6 +210,7 @@ ext_sizeof_alignof_void_type"
 
 -doc_begin="See Section \"1.1 Character sets\" of "CPP_MANUAL".  We assume the 
locale is not restricting any UTF-8 characters being part of the source 
character set."
 -config=STD.charset,behavior={c99, GCC_ARM64, "utf8"}
+-config=STD.charset,behavior={c99, GCC_X86_64, "utf8"}
 -doc_end
 
 -doc_begin="See Section \"4.3 Identifiers\" of "GCC_MANUAL"."
diff --git a/docs/misra/C-language-toolchain.rst 
b/docs/misra/C-language-toolchain.rst
index cb81f5c098..ec0c9953be 100644
--- a/docs/misra/C-language-toolchain.rst
+++ b/docs/misra/C-language-toolchain.rst
@@ -400,7 +400,7 @@ The table columns are as follows:
      - See Section "4.15 Architecture" of GCC_MANUAL and Section "3.1.2 Data 
Representation" of X86_64_ABI_MANUAL.
 
    * - Character not in the basic source character set is encountered in a 
source file, except in an identifier, a character constant, a string literal, a 
header name, a comment, or a preprocessing token that is never converted to a 
token
-     - ARM64
+     - ARM64, X86_64
      - UTF-8
      - See Section "1.1 Character sets" of CPP_MANUAL.
        We assume the locale is not restricting any UTF-8 characters being part 
of the source character set.
--
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