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Somehow some Dell servers we're trying to run a gRPC client on have an empty product name in the BIOS. When gRPC tries to creadte default credentials, it checks whether it's running on GCE by strcmp()ing the contents of /sys/class/dmi/id/product_name to some magic strings. When it reads that file, it gets only a newline; in trim() it skips over the newline in both directions, and since end < start it returns nullptr. This causes a segfault in the strcmp() call. Since a machine without a product name clearly isn't GCE, change it to return false instead.
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Dan Rosart
Dan Rosart
Yihua Zhang
Sree Kuchibhotla