[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
@@ -205,7 +205,7 @@ void AMFImporter::ParseHelper_FixTruncatedFloatString(const char *pInStr, std::s
 }

 static bool ParseHelper_Decode_Base64_IsBase64(const char pChar) {
-    return (isalnum(pChar) || (pChar == '+') || (pChar == '/'));
+    return (isalnum((unsigned char)pChar) || (pChar == '+') || (pChar == '/'));
 }

 void AMFImporter::ParseHelper_Decode_Base64(const std::string &pInputBase64, std::vector<uint8_t> &pOutputData) const {