Ignore some geninfo errors when generating coverage

Author: Morwenn

.github/workflows/code-coverage.yml

@@ -1,4 +1,4 @@
-# Copyright (c) 2020-2024 Morwenn
+# Copyright (c) 2020-2025 Morwenn
 # SPDX-License-Identifier: MIT
 
 name: Coverage Upload to Codecov
@@ -35,6 +35,7 @@ jobs:
           cmake -H${{github.event.repository.name}} -Bbuild
           -DCMAKE_BUILD_TYPE=Debug
           -DCPPSORT_ENABLE_COVERAGE=ON
+          -DGENINFO_EXTRA_FLAGS="--ignore-errors mismatch"
           -G"Unix Makefiles"
 
       - name: Build with coverage

cmake/FindLcov.cmake

@@ -77,6 +77,8 @@ if (GENINFO_BIN AND NOT DEFINED GENINFO_EXTERN_FLAG)
 		CACHE STRING "Geninfo flag to exclude system sources.")
 endif ()
 
+set(GENINFO_EXTRA_FLAGS "" CACHE STRING "Flags to add to invocation of geninfo.")
+
 # If Lcov was not found, exit module now.
 if (NOT LCOV_FOUND)
 	return()
@@ -171,7 +173,8 @@ function (lcov_capture_initial_tgt TNAME)
 		add_custom_command(OUTPUT ${OUTFILE} COMMAND ${GCOV_ENV} ${GENINFO_BIN}
 				--quiet --base-directory ${PROJECT_SOURCE_DIR} --initial
 				--gcov-tool ${GCOV_BIN} --output-filename ${OUTFILE}
-				${GENINFO_EXTERN_FLAG} ${TDIR}/${FILE}.gcno
+				${GENINFO_EXTRA_FLAGS} ${GENINFO_EXTERN_FLAG}
+				${TDIR}/${FILE}.gcno
 			DEPENDS ${TNAME}
 			COMMENT "Capturing initial coverage data for ${FILE}"
 		)
@@ -272,7 +275,7 @@ function (lcov_capture_tgt TNAME)
 				&& ${GCOV_ENV} ${GENINFO_BIN} --quiet --base-directory
 					${PROJECT_SOURCE_DIR} --gcov-tool ${GCOV_BIN}
 					--output-filename ${OUTFILE} ${GENINFO_EXTERN_FLAG}
-					${TDIR}/${FILE}.gcda
+					${GENINFO_EXTRA_FLAGS} ${TDIR}/${FILE}.gcda
 				|| cp ${OUTFILE}.init ${OUTFILE}
 			DEPENDS ${TNAME} ${TNAME}-capture-init "${TDIR}/${FILE}.gcda"
 			COMMENT "Capturing coverage data for ${FILE}"