diff options
Diffstat (limited to 'src/option.cc')
-rw-r--r-- | src/option.cc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/option.cc b/src/option.cc index 43dd853c..44b135e6 100644 --- a/src/option.cc +++ b/src/option.cc @@ -132,7 +132,8 @@ void process_environment(const char ** envp, const string& tag, if (*q == '_') *r++ = '-'; else - *r++ = static_cast<char>(std::tolower(*q)); + *r++ = static_cast<char>(std::tolower( + static_cast<unsigned char>(*q))); *r = '\0'; if (*q == '=') { |