pvif: more error checking
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@ -777,6 +777,9 @@ short PVD2DBR(pvd::ScalarType pvt)
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epics::pvData::FieldConstPtr
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ScalarBuilder::dtype()
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{
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if(!channel)
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throw std::runtime_error("+type:\"scalar\" requires +channel:");
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short dbr = dbChannelFinalFieldType(channel);
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const long maxelem = dbChannelFinalElements(channel);
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const pvd::ScalarType pvt = DBR2PVD(dbr);
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@ -955,6 +958,9 @@ struct PlainBuilder : public PVIFBuilder
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// fetch the structure description
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virtual epics::pvData::FieldConstPtr dtype() OVERRIDE FINAL {
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if(!channel)
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throw std::runtime_error("+type:\"plain\" requires +channel:");
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const short dbr = dbChannelFinalFieldType(channel);
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const long maxelem = dbChannelFinalElements(channel);
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const pvd::ScalarType pvt = DBR2PVD(dbr);
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