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mdbx: zeroed mc_top while tracking nested cursors.

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This avoids scanning dummy cursors during tracking.

Change-Id: Id4edc665010215b4a946f9438475691f1387313c
This commit is contained in:
Leonid Yuriev 2020-11-02 23:54:13 +03:00
parent 0c78da99b0
commit b209e91ad4
1 changed files with 1 additions and 0 deletions
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src/core.c
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@ -3618,6 +3618,7 @@ static __maybe_unused bool cursor_is_tracked(const MDBX_cursor *mc) {
MDBX_cursor *tracked = &(mn); \
if ((mn).mc_flags & C_SUB) { \
mc_dummy.mc_flags = C_INITIALIZED; \
mc_dummy.mc_top = 0; \
mc_dummy.mc_xcursor = (MDBX_xcursor *)&(mn); \
tracked = &mc_dummy; \
} \