[assimp] Make sure ctype calls use unsigned char.

Cast to unsigned char as required by C++ (see C++ **[cctype.cyn]** -> ISO C99 section 7.4, [see also](https://en.cppreference.com/w/cpp/string/byte/isspace)). Addresses https://github.com/assimp/assimp/issues/3867 and then some.
2021-05-04 17:31:13 -04:00
parent f17d58cadd
commit 2925592c64
13 changed files with 23 additions and 23 deletions
@@ -702,7 +702,7 @@ void MD3Importer::InternReadFile(const std::string &pFile, aiScene *pScene, IOSy
    }
    filename = mFile.substr(s), path = mFile.substr(0, s);
    for (std::string::iterator it = filename.begin(); it != filename.end(); ++it) {
-        *it = static_cast<char>(tolower(*it));
+        *it = static_cast<char>(tolower(static_cast<unsigned char>(*it)));
    }

    // Load multi-part model file, if necessary