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Fix infinite loop when walking up the directory hierarchy (#1183) 

A single find_package(harfbuzz) line in user code resulted in this loop
getting stuck when _harfbuzz_libdir_iter became "/".
This commit is contained in:
Volker Krause 2018-09-27 16:33:49 +02:00 committed by Ebrahim Byagowi
parent 0c1d852bc4
commit 9e9a36ee65
1 changed files with 4 additions and 0 deletions
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4
src/harfbuzz-config.cmake.in
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@ -12,7 +12,11 @@ set(_harfbuzz_libdir "@libdir@")
string(REPLACE "${_harfbuzz_remove_string}/" "" _harfbuzz_libdir "${_harfbuzz_libdir}") string(REPLACE "${_harfbuzz_remove_string}/" "" _harfbuzz_libdir "${_harfbuzz_libdir}")
set(_harfbuzz_libdir_iter "${_harfbuzz_libdir}") set(_harfbuzz_libdir_iter "${_harfbuzz_libdir}")
while (_harfbuzz_libdir_iter) while (_harfbuzz_libdir_iter)
set(_harfbuzz_libdir_prev_iter "${_harfbuzz_libdir_iter}")
get_filename_component(_harfbuzz_libdir_iter "${_harfbuzz_libdir_iter}" DIRECTORY) get_filename_component(_harfbuzz_libdir_iter "${_harfbuzz_libdir_iter}" DIRECTORY)
if (_harfbuzz_libdir_prev_iter STREQUAL _harfbuzz_libdir_iter)
break()
endif ()
get_filename_component(_harfbuzz_prefix "${_harfbuzz_prefix}" DIRECTORY) get_filename_component(_harfbuzz_prefix "${_harfbuzz_prefix}" DIRECTORY)
endwhile () endwhile ()
unset(_harfbuzz_libdir_iter) unset(_harfbuzz_libdir_iter)