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Fixes #1386; pipeline.Exec() sometimes returns spurious StatusCmd

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This is caused by function `wrapMultiExec` sometimes clobbering the caller's
cmd slice, corrupting future requests.
This commit is contained in:
Scott Parkerson
2020-09-17 10:35:34 -04:00
parent 2eb40d83aa
commit 26a6d4714c
2 changed files with 22 additions and 5 deletions
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10
redis.go
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@ -492,11 +492,11 @@ func wrapMultiExec(ctx context.Context, cmds []Cmder) []Cmder {
if len(cmds) == 0 {
panic("not reached")
}
cmds = append(cmds, make([]Cmder, 2)...)
copy(cmds[1:], cmds[:len(cmds)-2])
cmds[0] = NewStatusCmd(ctx, "multi")
cmds[len(cmds)-1] = NewSliceCmd(ctx, "exec")
return cmds
cmdCopy := make([]Cmder, len(cmds)+2)
cmdCopy[0] = NewStatusCmd(ctx, "multi")
copy(cmdCopy[1:], cmds)
cmdCopy[len(cmdCopy)-1] = NewSliceCmd(ctx, "exec")
return cmdCopy
}
func txPipelineReadQueued(rd *proto.Reader, statusCmd *StatusCmd, cmds []Cmder) error {