tree bf9057e378216e7ef5eef75227a5c2f65e199c54
parent 7fc698b06acd483d3ad8ee5a64703fd67e021b1c
author George Rimar <grimar@accesssoftek.com> 1571654283 +0000
committer George Rimar <grimar@accesssoftek.com> 1571654283 +0000

[obj2yaml] - Stop triggering UB when dumping corrupted strings.

We have a following code to find quote type:

if (isspace(S.front()) || isspace(S.back()))
...

Problem is that:

"int isspace( int ch ): The behavior is undefined if the value of
ch is not representable as unsigned char and is not equal to EOF."
(https://en.cppreference.com/w/cpp/string/byte/isspace)

This patch shows how this UB can be triggered and fixes an issue.

Differential revision: https://reviews.llvm.org/D69160

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@375404 91177308-0d34-0410-b5e6-96231b3b80d8