https://bugs.openldap.org/show_bug.cgi?id=9539

Issue ID: 9539 Summary: ERROR_USER_MAPPED_FILE from mdb_env_set_mapsize(env, 0) Product: LMDB Version: 0.9.28 Hardware: x86_64 OS: Windows Status: UNCONFIRMED Severity: normal Priority: --- Component: liblmdb Assignee: bugs@openldap.org Reporter: igfoo@github.com Target Milestone: ---

On Windows, with the attached program and the commands below, I am getting ERROR_USER_MAPPED_FILE from mdb_env_set_mapsize(env, 0) on the latest 0.9.28 release. The program works as expected on mdb.master.

git clone https://github.com/LMDB/lmdb.git cd lmdb git reset --hard LMDB_0.9.28 cd ..

call "c:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars64.bat" cl -Femain.exe -Ilmdb/libraries/liblmdb main.c lmdb/libraries/liblmdb/mdb.c lmdb/libraries/liblmdb/midl.c Advapi32.lib cl -Feloop.exe -Ilmdb/libraries/liblmdb loop.c lmdb/libraries/liblmdb/mdb.c lmdb/libraries/liblmdb/midl.c Advapi32.lib

.\main.exe

Example output:

Loop 300000 400000 starting. Got ERROR_USER_MAPPED_FILE from mdb_env_set_mapsize(0). Loop 500000 600000 starting. Got ERROR_USER_MAPPED_FILE from mdb_env_set_mapsize(0). Loop 200000 300000 starting. Got ERROR_USER_MAPPED_FILE from mdb_env_set_mapsize(0). Loop 400000 500000 starting. Got ERROR_USER_MAPPED_FILE from mdb_env_set_mapsize(0). Loop 600000 700000 starting. Got ERROR_USER_MAPPED_FILE from mdb_env_set_mapsize(0). Loop 100000 200000 starting. Got ERROR_USER_MAPPED_FILE from mdb_env_set_mapsize(0). Loop 700000 800000 starting. Got ERROR_USER_MAPPED_FILE from mdb_env_set_mapsize(0). Loop 900000 1000000 starting. Got ERROR_USER_MAPPED_FILE from mdb_env_set_mapsize(0). Loop 800000 900000 starting. Loop 800000 900000 done. Non-zero 0 exit code 1. Non-zero 1 exit code 1. Non-zero 2 exit code 1. Non-zero 3 exit code 1. Non-zero 4 exit code 1. Non-zero 5 exit code 1. Non-zero 6 exit code 1. Non-zero 8 exit code 1. All done.