From 6efb6c0ffe7b7345b4b2349b1bd1b8f33dc6c7fd Mon Sep 17 00:00:00 2001
From: Kenneth Heafield <github@kheafield.com>
Date: Wed, 15 Aug 2012 11:08:08 -0400
Subject: Throw exception for binary files with too large order / Ondrej Bojar

---
 lm/model.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'lm')

diff --git a/lm/model.cc b/lm/model.cc
index 6547ba03d..aace40df9 100644
--- a/lm/model.cc
+++ b/lm/model.cc
@@ -48,6 +48,7 @@ template <class Search, class VocabularyT> GenericModel<Search, VocabularyT>::Ge
 }
 
 template <class Search, class VocabularyT> void GenericModel<Search, VocabularyT>::InitializeFromBinary(void *start, const Parameters &params, const Config &config, int fd) {
+  UTIL_THROW_IF(params.counts.size() > KENLM_MAX_ORDER, FormatLoadException, "This model has order " << params.counts.size() << ".  Re-compile (use -a), passing a number at least this large to bjam's --max-kenlm-order flag.");
   SetupMemory(start, params.counts, config);
   vocab_.LoadedBinary(params.fixed.has_vocabulary, fd, config.enumerate_vocab);
   search_.LoadedBinary();
@@ -61,7 +62,7 @@ template <class Search, class VocabularyT> void GenericModel<Search, VocabularyT
     // File counts do not include pruned trigrams that extend to quadgrams etc.   These will be fixed by search_.
     ReadARPACounts(f, counts);
 
-    if (counts.size() > KENLM_MAX_ORDER) UTIL_THROW(FormatLoadException, "This model has order " << counts.size() << ".  Re-compile, passing a number at least this large to bjam's --max-kenlm-order flag.");
+    UTIL_THROW_IF(counts.size() > KENLM_MAX_ORDER, FormatLoadException, "This model has order " << counts.size() << ".  Re-compile (use -a), passing a number at least this large to bjam's --max-kenlm-order flag.");
     if (counts.size() < 2) UTIL_THROW(FormatLoadException, "This ngram implementation assumes at least a bigram model.");
     if (config.probing_multiplier <= 1.0) UTIL_THROW(ConfigException, "probing multiplier must be > 1.0");
 
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