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-rw-r--r--src/util.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/util.h b/src/util.h
index d94463c65..6fb2dc0f4 100644
--- a/src/util.h
+++ b/src/util.h
@@ -22,6 +22,15 @@
#define GIT_DATE_RFC2822_SZ 32
+/**
+ * Return the length of a constant string.
+ * We are aware that `strlen` performs the same task and is usually
+ * optimized away by the compiler, whilst being safer because it returns
+ * valid values when passed a pointer instead of a constant string; however
+ * this macro will transparently work with wide-char and single-char strings.
+ */
+#define CONST_STRLEN(x) ((sizeof(x)/sizeof(x[0])) - 1)
+
/*
* Custom memory allocation wrappers
* that set error code and error message