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Commit3650e7a

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Prevent overflow for block number in buffile.c
As coded, the start block calculated by BufFileAppend() would overflowonce more than 16k files are used with a default block size. This issueexisted beforeb1e5c9f, but there's no reason not to be clean aboutit.Per report from Coverity, with a fix suggested by Tom Lane.
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‎src/backend/storage/file/buffile.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -904,7 +904,7 @@ BufFileSize(BufFile *file)
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int64
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BufFileAppend(BufFile*target,BufFile*source)
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{
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int64startBlock=target->numFiles*BUFFILE_SEG_SIZE;
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int64startBlock=(int64)target->numFiles*BUFFILE_SEG_SIZE;
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intnewNumFiles=target->numFiles+source->numFiles;
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inti;
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