[analyzer] Fix assertion crash in CStringChecker
authorGeorge Karpenkov <ekarpenkov@apple.com>
Sat, 31 Mar 2018 01:20:08 +0000 (01:20 +0000)
committerGeorge Karpenkov <ekarpenkov@apple.com>
Sat, 31 Mar 2018 01:20:08 +0000 (01:20 +0000)
commit6fe0f035bd1dd1034b341e5a740c725044f65b90
treef9b870666dddb04dfbb25032670c2d9cb9676cf6
parentfa4d18c7e31a0b790c4a41f46c6995d901453a6f
[analyzer] Fix assertion crash in CStringChecker

An offset might be unknown.

rdar://39054939

Differential Revision: https://reviews.llvm.org/D45115

llvm-svn: 328912
clang/lib/StaticAnalyzer/Checkers/CStringChecker.cpp
clang/test/Analysis/string.c