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Diffstat (limited to 'starts/meaning-vm/level-0/concept.cpp')
| -rw-r--r-- | starts/meaning-vm/level-0/concept.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/starts/meaning-vm/level-0/concept.cpp b/starts/meaning-vm/level-0/concept.cpp index 9bb772d..0661edd 100644 --- a/starts/meaning-vm/level-0/concept.cpp +++ b/starts/meaning-vm/level-0/concept.cpp @@ -12,6 +12,7 @@ concept* concept::id() void concept::link(concept* type, concept* target) { + if (type == 0 || target == 0) { throw null_reference(); } links.insert({type, target}); } |