commit 934f3ab87b642fa6230a951f051cd44828b96f57
author Zuyu Zhang <zuyu@cs.wisc.edu> Tue Mar 06 03:00:10 2018 -0600
committer Zuyu Zhang <zuyu@cs.wisc.edu> Tue Mar 06 03:00:10 2018 -0600
tree 196875734572d3f5e72bf1ec1be26689d2f11846
parent c2ed5c69b6b8dad07d7410beb0c8292ea1a746e0

Check File Handle in TextScanWorkOrder to avoid segfault.

relational_operators/TextScanOperator.cpp

diff --git a/relational_operators/TextScanOperator.cpp b/relational_operators/TextScanOperator.cpp
index 66137d8..9e3bcb1 100644
--- a/relational_operators/TextScanOperator.cpp
+++ b/relational_operators/TextScanOperator.cpp
@@ -273,6 +273,11 @@
 
     // Read text segment into buffer.
     file = std::fopen(filename_.c_str(), "rb");
+    if (file == nullptr) {
+      LOG(ERROR) << "Failed to open file " << filename_
+                 << " with error: " << strerror(errno);
+      return;
+    }
     std::fseek(file, text_offset_, SEEK_SET);
     bytes_read = std::fread(buffer, 1, text_segment_size_, file);