Ensure pclose exit code is not modified by a sigpipe

Author: ptheywood

jitify2.hpp

@@ -4118,6 +4118,10 @@ inline int run_system_command(const char* command,
     while (fgets(buffer.data(), static_cast<int>(buffer.size()), pipe)) {
       *output += buffer.data();
     }
+  } else {
+    // Must always read from the pipe for the exit code from the command to be available
+    std::array<char, 128> buffer;
+    while (fgets(buffer.data(), static_cast<int>(buffer.size()), pipe)) { }
   }
   const int result = JITIFY_PCLOSE(pipe);
   if (result == -1 && failure) {
@@ -4135,7 +4139,6 @@ inline int run_system_command(const char* command,
       exitCode = WEXITSTATUS(result);
     }
   #endif
-
   return exitCode;
 }
 #endif  // JITIFY_ENABLE_NVCC