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Runtime error
Runtime error
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# Inputs:
#
# Variable | Type | Doc
# ---------------------|----------|--------------------------------------
# EXAMPLE_EXECUTABLE | FilePath | Path to example executable
# FILECHECK_ENABLED | Boolean | Run FileCheck comparison test
# FILECHECK_EXECUTABLE | FilePath | Path to the LLVM FileCheck utility
# REFERENCE_FILE | FilePath | Path to the FileCheck reference file
if (FILECHECK_ENABLED)
if (NOT EXISTS "${REFERENCE_FILE}")
message(FATAL_ERROR
"FileCheck requested for '${EXAMPLE_EXECUTABLE}', but reference file "
"does not exist at '${REFERENCE_FILE}`."
)
endif()
# If the reference file is empty, validate that the example doesn't
# produce any output.
file(SIZE "${REFERENCE_FILE}" file_size)
message("${REFERENCE_FILE}: ${file_size} bytes")
if (file_size EQUAL 0)
set(check_empty_output TRUE)
set(filecheck_command)
else()
set(check_empty_output FALSE)
set(filecheck_command COMMAND "${FILECHECK_EXECUTABLE}" "${REFERENCE_FILE}")
endif()
endif()
execute_process(
COMMAND "${EXAMPLE_EXECUTABLE}"
${filecheck_command}
RESULT_VARIABLE exit_code
OUTPUT_VARIABLE stdout
ERROR_VARIABLE stderr
)
if (NOT 0 EQUAL exit_code)
message(FATAL_ERROR "${EXAMPLE_EXECUTABLE} failed (${exit_code}):\n${stderr}")
endif()
if (check_empty_output)
string(LENGTH "${stdout}" stdout_size)
if (NOT stdout_size EQUAL 0)
message(FATAL_ERROR "${EXAMPLE_EXECUTABLE}: output received, but not expected:\n${stdout}")
endif()
endif()
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