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Make sure !empty() before calling String::front().

Description

Make sure !empty() before calling String::front().

Reviewers: howard.hinnant

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D9954

Details

Committed
chaorenMay 26 2015, 4:14 PM
Differential Revision
D9954: Make sure !empty() before calling front().
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