diff options
| -rw-r--r-- | Source/cmExecuteProcessCommand.cxx | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Source/cmExecuteProcessCommand.cxx b/Source/cmExecuteProcessCommand.cxx index e764545..483a601 100644 --- a/Source/cmExecuteProcessCommand.cxx +++ b/Source/cmExecuteProcessCommand.cxx @@ -35,7 +35,11 @@ namespace { bool cmExecuteProcessCommandIsWhitespace(char c) { - return (isspace(static_cast<int>(c)) || c == '\n' || c == '\r'); + // isspace takes 'int' but documents that the value must be representable + // by 'unsigned char', or EOF. Cast to 'unsigned char' to avoid sign + // extension while casting to 'int'. + return (isspace(static_cast<int>(static_cast<unsigned char>(c))) || + c == '\n' || c == '\r'); } void cmExecuteProcessCommandFixText(std::vector<char>& output, |