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-rw-r--r--include/Support/CommandLine.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/Support/CommandLine.h b/include/Support/CommandLine.h
index 5febbcf1c9..410361797a 100644
--- a/include/Support/CommandLine.h
+++ b/include/Support/CommandLine.h
@@ -35,7 +35,7 @@ void ParseCommandLineOptions(int &argc, char **argv,
// ParseEnvironmentOptions - Environment variable option processing alternate
// entry point.
//
-void ParseEnvironmentOptions(char *progName, char *envvar,
+void ParseEnvironmentOptions(const char *progName, const char *envvar,
const char *Overview = 0);
//===----------------------------------------------------------------------===//