commit f3571e5a6ec05be54c402c2b1e56a9024ad5dee2
author Yifan Hong <elsk@google.com> Wed Apr 08 11:01:42 2020 -0700
committer Yifan Hong <elsk@google.com> Wed Apr 08 18:12:32 2020 +0000
tree 95613b5222117418b8b5b57d7df4036742d42dee
parent af3bb3b018b6395947a9feca0cf216673e8afed7

Avoid out of range exception

When osRelease is x.y.z without any suffix, substr(npos) will
throw an exception. Check before checking the suffix.

Test: libvintf_test
Fixes: 153525360
Change-Id: Ia6d4dbdf0dd704edc6df327072092a3d30162d80

RuntimeInfo-target.cpp

diff --git a/RuntimeInfo-target.cpp b/RuntimeInfo-target.cpp
index 8889b03..659cdec 100644
--- a/RuntimeInfo-target.cpp
+++ b/RuntimeInfo-target.cpp
@@ -148,6 +148,7 @@
         return UNKNOWN_ERROR;
     }
     mRuntimeInfo->mIsMainline =
+        pos != std::string::npos &&
         android::base::StartsWith(mRuntimeInfo->mOsRelease.substr(pos), kMainline);
     return OK;
 }