MonetDB: default - add some protection against missing statements

[Niels Nes]

Changeset: aa675cc447d9 for MonetDB
URL: http://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=aa675cc447d9
Modified Files:
        monetdb5/optimizer/opt_pushselect.c
Branch: default
Log Message:

add some protection against missing statements


diffs (12 lines):

diff --git a/monetdb5/optimizer/opt_pushselect.c 
b/monetdb5/optimizer/opt_pushselect.c
--- a/monetdb5/optimizer/opt_pushselect.c
+++ b/monetdb5/optimizer/opt_pushselect.c
@@ -481,7 +481,7 @@ OPTpushselectImplementation(Client cntxt
                if (isSlice(p) && p->retc == 1) {
                        int var = getArg(p, 1);
                        InstrPtr q = old[vars[var]];
-                       if (getModuleId(q) == sqlRef && getFunctionId(q) == 
projectdeltaRef) {
+                       if (q && getModuleId(q) == sqlRef && getFunctionId(q) 
== projectdeltaRef) {
                                InstrPtr r = copyInstruction(p);
                                InstrPtr s = copyInstruction(q);
 
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