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mdbx: fix div-by-zero while copy-with-compaction for non-resizeable DB.

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Change-Id: Ice7f5675c3b2864195874f2e3c4ade9148cad048
This commit is contained in:
Leonid Yuriev
2020-04-28 18:23:13 +03:00
parent fac0d47913
commit eec465704d
1 changed files with 6 additions and 10 deletions
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10
src/core.c
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@@ -15233,20 +15233,16 @@ done:
static __cold void compact_fixup_meta(MDBX_env *env, MDBX_meta *meta) { static __cold void compact_fixup_meta(MDBX_env *env, MDBX_meta *meta) {
/* Calculate filesize taking in account shrink/growing thresholds */ /* Calculate filesize taking in account shrink/growing thresholds */
if (meta->mm_geo.next > meta->mm_geo.now) { if (meta->mm_geo.next != meta->mm_geo.now) {
const pgno_t aligned = pgno_align2os_pgno(
env,
pgno_add(meta->mm_geo.next,
meta->mm_geo.grow - meta->mm_geo.next % meta->mm_geo.grow));
meta->mm_geo.now = aligned;
} else if (meta->mm_geo.next < meta->mm_geo.now) {
meta->mm_geo.now = meta->mm_geo.next; meta->mm_geo.now = meta->mm_geo.next;
const pgno_t aligner = const pgno_t aligner =
meta->mm_geo.grow ? meta->mm_geo.grow : meta->mm_geo.shrink; meta->mm_geo.grow ? meta->mm_geo.grow : meta->mm_geo.shrink;
if (aligner) {
const pgno_t aligned = pgno_align2os_pgno( const pgno_t aligned = pgno_align2os_pgno(
env, meta->mm_geo.next + aligner - meta->mm_geo.next % aligner); env, meta->mm_geo.next + aligner - meta->mm_geo.next % aligner);
meta->mm_geo.now = aligned; meta->mm_geo.now = aligned;
} }
}
if (meta->mm_geo.now < meta->mm_geo.lower) if (meta->mm_geo.now < meta->mm_geo.lower)
meta->mm_geo.now = meta->mm_geo.lower; meta->mm_geo.now = meta->mm_geo.lower;