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catch corruption - avoid crash

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R=rsc
DELTA=4  (4 added, 0 deleted, 0 changed)
OCL=31192
CL=31198
This commit is contained in:
Rob Pike 2009-07-06 10:58:55 -07:00
parent deb954772d
commit d3a2925bb2
1 changed files with 4 additions and 0 deletions
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4
src/pkg/gob/decode.go
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@ -295,6 +295,10 @@ func decodeStruct(engine *decEngine, rtyp reflect.StructType, r io.Reader, p uin
basep := p;
for state.err == nil {
delta := int(DecodeUint(state));
if delta < 0 {
state.err = os.ErrorString("gob decode: corrupted data: negative delta");
break
}
if state.err != nil || delta == 0 { // struct terminator is zero delta fieldnum
break
}