Changeset: 0a78d9869bd2 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/0a78d9869bd2
Modified Files:
gdk/gdk_string.c
Branch: Jun2020
Log Message:
Fix reinitializing duplicate elimination hash + clear string heap pad area.
diffs (30 lines):
diff --git a/gdk/gdk_string.c b/gdk/gdk_string.c
--- a/gdk/gdk_string.c
+++ b/gdk/gdk_string.c
@@ -108,11 +108,14 @@ strCleanHash(Heap *h, bool rebuild)
* started. */
memset(newhash, 0, sizeof(newhash));
pos = GDK_STRHASHSIZE;
- while (pos < h->free &&
- pos + (pad = GDK_VARALIGN - (pos & (GDK_VARALIGN - 1))) <
GDK_ELIMLIMIT) {
+ while (pos < h->free) {
+ pad = GDK_VARALIGN - (pos & (GDK_VARALIGN - 1));
if (pad < sizeof(stridx_t))
pad += GDK_VARALIGN;
- pos += pad + extralen;
+ pos += pad;
+ if (pos >= GDK_ELIMLIMIT)
+ break;
+ pos += extralen;
s = h->base + pos;
if (h->hashash)
strhash = ((const BUN *) s)[-1];
@@ -312,6 +315,8 @@ strPut(Heap *h, var_t *dst, const char *
/* insert string */
pos = h->free + pad + extralen;
*dst = (var_t) pos;
+ if (pos > h->free)
+ memset(h->base + h->free, 0, pos - h->free);
memcpy(h->base + pos, v, len);
if (h->hashash) {
((BUN *) (h->base + pos))[-1] = strhash;
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