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Merge pull request #4183 from taosdata/bugfix/TD-2055 

[TD-2055]<fix>: core dump in wildcard query
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huili 2020-11-12 13:32:37 +08:00 committed by GitHub
parent c59ab92bc6 e9f848f635
commit 55de47d1f2
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1 changed files with 2 additions and 1 deletions
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src/tsdb/src/tsdbRead.c
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@ -2348,7 +2348,8 @@ void filterPrepare(void* expr, void* param) {
if (size < (uint32_t)pSchema->bytes) { if (size < (uint32_t)pSchema->bytes) {
size = pSchema->bytes; size = pSchema->bytes;
} }
pInfo->q = calloc(1, size + TSDB_NCHAR_SIZE); // to make sure tonchar does not cause invalid write, since the '\0' needs at least sizeof(wchar_t) space. // to make sure tonchar does not cause invalid write, since the '\0' needs at least sizeof(wchar_t) space.
pInfo->q = calloc(1, size + TSDB_NCHAR_SIZE + VARSTR_HEADER_SIZE);
tVariantDump(pCond, pInfo->q, pSchema->type, true); tVariantDump(pCond, pInfo->q, pSchema->type, true);
} }
} }