MonetDB: mutation - Be protective against nil-pointers

[Martin Kersten]

Changeset: cd06bdf2a76a for MonetDB
URL: http://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=cd06bdf2a76a
Modified Files:
        monetdb5/mal/mal_function.c
Branch: mutation
Log Message:

Be protective against nil-pointers


diffs (13 lines):

diff --git a/monetdb5/mal/mal_function.c b/monetdb5/mal/mal_function.c
--- a/monetdb5/mal/mal_function.c
+++ b/monetdb5/mal/mal_function.c
@@ -629,7 +629,8 @@ listFunction(stream *fd, MalBlkPtr mb, M
                mnstr_printf(fd, "%% .explain # table_name\n");
                mnstr_printf(fd, "%% mal # name\n");
                mnstr_printf(fd, "%% clob # type\n");
-               for (i = first; i < first +size && i < mb->stop; i++) {
+               for (i = first; i < first +size && i < mb->stop; i++) 
+               if( getInstrPtr(mb,i)){
                        ps = instruction2str(mb, stk, getInstrPtr(mb, i), flg);
                        if (ps) {
                                size_t l = strlen(ps);
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