fix segmentation fault

egs/aidatatang_200zh/ASR/prepare.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# fix segmentation fault reported in https://github.com/k2-fsa/icefall/issues/674
+export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
+
 set -eou pipefail
 
 stage=-1

egs/aishell/ASR/prepare.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# fix segmentation fault reported in https://github.com/k2-fsa/icefall/issues/674
+export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
+
 set -eou pipefail
 
 nj=15

egs/aishell2/ASR/prepare.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# fix segmentation fault reported in https://github.com/k2-fsa/icefall/issues/674
+export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
+
 set -eou pipefail
 
 nj=30

egs/aishell4/ASR/prepare.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# fix segmentation fault reported in https://github.com/k2-fsa/icefall/issues/674
+export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
+
 set -eou pipefail
 
 stage=-1

egs/alimeeting/ASR/prepare.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# fix segmentation fault reported in https://github.com/k2-fsa/icefall/issues/674
+export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
+
 set -eou pipefail
 
 stage=-1

egs/csj/ASR/prepare.sh

@@ -35,6 +35,9 @@
 # can generate other transcript formats by supplying your own config files. A few examples of these
 # config files can be found in local/conf.
 
+# fix segmentation fault reported in https://github.com/k2-fsa/icefall/issues/674
+export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
+
 set -eou pipefail
 
 nj=8

egs/gigaspeech/ASR/prepare.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# fix segmentation fault reported in https://github.com/k2-fsa/icefall/issues/674
+export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
+
 set -eou pipefail
 
 nj=15

egs/librispeech/ASR/prepare.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# fix segmentation fault reported in https://github.com/k2-fsa/icefall/issues/674
+export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
+
 set -eou pipefail
 
 nj=15

egs/ptb/LM/prepare.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# fix segmentation fault reported in https://github.com/k2-fsa/icefall/issues/674
+export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
+
 set -eou pipefail
 
 nj=15

egs/spgispeech/ASR/prepare.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# fix segmentation fault reported in https://github.com/k2-fsa/icefall/issues/674
+export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
+
 set -eou pipefail
 
 nj=20

egs/tal_csasr/ASR/prepare.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# fix segmentation fault reported in https://github.com/k2-fsa/icefall/issues/674
+export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
+
 set -eou pipefail
 
 stage=-1

egs/tedlium3/ASR/prepare.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# fix segmentation fault reported in https://github.com/k2-fsa/icefall/issues/674
+export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
+
 set -eou pipefail
 
 nj=15

egs/timit/ASR/prepare.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# fix segmentation fault reported in https://github.com/k2-fsa/icefall/issues/674
+export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
+
 set -eou pipefail
 
 num_phones=39

egs/wenetspeech/ASR/prepare.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# fix segmentation fault reported in https://github.com/k2-fsa/icefall/issues/674
+export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
+
 set -eou pipefail
 
 nj=15

egs/yesno/ASR/prepare.sh

@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# fix segmentation fault reported in https://github.com/k2-fsa/icefall/issues/674
+export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
+
 set -eou pipefail
 
 stage=-1