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68 lines
2.4 KiB
68 lines
2.4 KiB
set(failure_test_executables
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${CMAKE_CURRENT_BINARY_DIR}/failure_test_targets)
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file(WRITE ${failure_test_executables} "")
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# Check if we should do anything. If the compiler doesn't support hidden
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# visibility, the failure tests won't fail, so just write an empty targets
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# list and punt.
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if(NOT WIN32 AND NOT CYGWIN AND NOT COMPILER_HAS_HIDDEN_VISIBILITY)
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return()
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endif()
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# Read the input source file
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file(READ ${CMAKE_CURRENT_SOURCE_DIR}/exportheader_test.cpp content_post)
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set(content_pre "")
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# Generate source files for failure test executables
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set(counter 0)
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while(1)
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# Find first occurrence of link error marker in remaining content
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string(REGEX MATCH "//([^;\n]+;) LINK ERROR( [(][^)]+[)])?\n(.*)"
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match "${content_post}")
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if(match STREQUAL "")
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# No more matches
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break()
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endif()
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# Shift content buffers and extract failing statement
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string(LENGTH "${content_post}" content_post_length)
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string(LENGTH "${match}" matched_length)
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math(EXPR shift_length "${content_post_length} - ${matched_length}")
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string(SUBSTRING "${content_post}" 0 ${shift_length} shift)
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set(content_pre "${content_pre}${shift}")
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set(content_post "${CMAKE_MATCH_3}")
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set(content_active "//${CMAKE_MATCH_1} LINK ERROR${CMAKE_MATCH_2}")
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set(statement "${CMAKE_MATCH_1}")
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# Check if potential error is conditional, and evaluate condition if so
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string(REGEX REPLACE " [(]([^)]+)[)]" "\\1" condition "${CMAKE_MATCH_2}")
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if(NOT condition STREQUAL "")
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string(REGEX REPLACE " +" ";" condition "${condition}")
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if(${condition})
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else()
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message(STATUS "Not testing '${statement}'; "
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"condition (${condition}) is FALSE")
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set(content_pre "${content_pre}// link error removed\n")
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continue()
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endif()
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endif()
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if(NOT skip)
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message(STATUS "Creating failure test for '${statement}'")
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math(EXPR counter "${counter} + 1")
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# Write new source file
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set(out ${CMAKE_CURRENT_BINARY_DIR}/exportheader_failtest-${counter}.cpp)
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file(WRITE ${out} "${content_pre}${statement}\n${content_post}")
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# Add executable for failure test
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add_executable(GEH-fail-${counter} EXCLUDE_FROM_ALL ${out})
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target_link_libraries(GEH-fail-${counter} ${link_libraries})
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file(APPEND ${failure_test_executables} "GEH-fail-${counter}\n")
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endif()
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# Add placeholder where failing statement was removed
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set(content_pre "${content_pre}${content_active}\n")
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endwhile()
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