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@@
statement S;
expression V;
@@
V = isc_event_allocate(...);
- if (V == NULL) S
@@
type T;
statement S;
expression V;
@@
V = (T *)isc_event_allocate(...);
- if (V == NULL) S
@@
statement S;
expression V;
@@
if (V == NULL) V = isc_event_allocate(...);
- if (V == NULL) S
@@
statement S1, S2;
expression V;
@@
V = isc_event_allocate(...);
- if (V == NULL) S1 else { S2 }
+ S2
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