https://sourceware.org/bugzilla/show_bug.cgi?id=28897
--- Comment #2 from Fred Eisele <fredrick.eisele at gmail dot com> --- This affects several programs such as `ar.exe`, and `make.exe`. In those cases it only shows up when a relative path is provided and the combined length of that relative path and the path to the current working directory are greater than MAX_PATH. The following use of `ar.exe` on MSYS2 on Windows 10 illustrates the issue in practice. Setup a candidate directory structure. mkdir -p ./wip/sample/projects/Aaa/Bbb/Ccccccc/DdddEeeeeeeeeee/fffff/Ggg touch ./wip/sample/projects/Aaa/Bbb/Ccccccc/DdddEeeeeeeeeee/fffff/Ggg/iiii_iii_iiiiiiiiiiiiiii_iiii_iiiiiiii_iiii.o mkdir -p ./wip/HHHHHhhhhhhhhhhhHhhhHhhhh_1.1.1/kkkkKkkkkkkkKkkkkkkkk/Aaa/src/Bbb/DdddEeeeeeeeeee/Jjjj_Jjjjjjjj/foo/bar/baz/bow Then the following produces the error: pushd ./wip/HHHHHhhhhhhhhhhhHhhhHhhhh_1.1.1/kkkkKkkkkkkkKkkkkkkkk/Aaa/src/Bbb/DdddEeeeeeeeeee/Jjjj_Jjjjjjjj/foo/bar/baz/bow ls ../../../../../../../../../../.. ar cr foo.a ../../../../../../../../../../../sample/projects/Aaa/Bbb/Ccccccc/DdddEeeeeeeeeee/fffff/Ggg/iiii_iii_iiiiiiiiiiiiiii_iiii_iiiiiiii_iiii.o The error message is something like (when it happens): C:\tools\msys64\mingw64\bin\ar.exe: ../../../../../../../../../../../sample/projects/Aaa/Bbb/Ccccccc/DdddEeeeeeeeeee/fffff/Ggg/iiii_iii_iiiiiiiiiiiiiii_iiii_iiiiiiii_iiii.o: Invalid argument The problem can be cleared up by making doing a similar thing from a higher directory. e.g. pushd ./wip/HHHHHhhhhhhhhhhhHhhhHhhhh_1.1.1/kkkkKkkkkkkkKkkkkkkkk/Aaa/src/Bbb/DdddEeeeeeeeeee ls ../../../../../.. ar cr foo.a ../../../../../../sample/projects/Aaa/Bbb/Ccccccc/DdddEeeeeeeeeee/fffff/Ggg/iiii_iii_iiiiiiiiiiiiiii_iiii_iiiiiiii_iiii.o -- You are receiving this mail because: You are on the CC list for the bug.
