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-rw-r--r--Source/cmDocumentation.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/Source/cmDocumentation.h b/Source/cmDocumentation.h
index dd99ca8..ac36c8b 100644
--- a/Source/cmDocumentation.h
+++ b/Source/cmDocumentation.h
@@ -39,7 +39,7 @@ public:
* help arguments.
*/
bool CheckOptions(int argc, const char* const* argv,
- const char* exitOpt = 0);
+ const char* exitOpt = CM_NULLPTR);
/**
* Print help requested on the command line. Call after