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-rw-r--r--usr/src/common/util/strtolctype.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/usr/src/common/util/strtolctype.h b/usr/src/common/util/strtolctype.h
index 7b7afc6e30..5675e42be7 100644
--- a/usr/src/common/util/strtolctype.h
+++ b/usr/src/common/util/strtolctype.h
@@ -38,6 +38,10 @@ extern "C" {
* This header file contains a collection of macros that the strtou?ll?
* functions in common/util use to test characters. What we need is a kernel
* version of ctype.h.
+ *
+ * NOTE: These macros are used within several DTrace probe context functions.
+ * They must not be altered to make function calls or perform actions not
+ * safe in probe context.
*/
#if defined(_KERNEL) && !defined(_BOOT)