Downgrade clang, ignore more warnings from cppcheck

Author: lefticus

.github/workflows/auto-clang-format.yml

@@ -12,7 +12,7 @@ jobs:
         source: '.'
         exclude: './third_party ./external'
         extensions: 'h,cpp,hpp'
-        clangFormatVersion: 20
+        clangFormatVersion: 19
         inplace: True
     - uses: EndBug/add-and-commit@v4
       with:

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ on:
       - develop
 
 env:
-  CLANG_TIDY_VERSION: "20.1.0"
+  CLANG_TIDY_VERSION: "19.1.1"
   VERBOSE: 1
 
 
@@ -34,7 +34,7 @@ jobs:
           - windows-latest
         compiler:
           # you can specify the version after `-` like "llvm-15.0.2".
-          - llvm-20.1.0
+          - llvm-19.1.1
           - gcc-14
         generator:
           - "Ninja Multi-Config"
@@ -59,7 +59,7 @@ jobs:
             gcov_executable: gcov
             enable_ipo: On
 
-          - compiler: llvm-20.1.0
+          - compiler: llvm-19.1.1
             enable_ipo: Off
             gcov_executable: "llvm-cov gcov"
 

cmake/StaticAnalyzers.cmake

@@ -28,6 +28,8 @@ macro(myproject_enable_cppcheck WARNINGS_AS_ERRORS CPPCHECK_OPTIONS)
           # ignores code that cppcheck thinks is invalid C++
           --suppress=syntaxError
           --suppress=preprocessorErrorDirective
+          # ignores static_assert type failures
+          --suppress=knownConditionTrueFalse
           --inconclusive
           --suppress=${SUPPRESS_DIR})
     else()