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-rw-r--r--git-compat-util.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/git-compat-util.h b/git-compat-util.h
index 591bb78ad9..36b9577c8d 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -93,12 +93,19 @@ DISABLE_WARNING(-Wsign-compare)
# define BARF_UNLESS_COPYABLE(dst, src) \
BUILD_ASSERT_OR_ZERO(__builtin_types_compatible_p(__typeof__(*(dst)), \
__typeof__(*(src))))
+
+# define BARF_UNLESS_SIGNED(var) BUILD_ASSERT_OR_ZERO(((__typeof__(var)) -1) < 0)
+# define BARF_UNLESS_UNSIGNED(var) BUILD_ASSERT_OR_ZERO(((__typeof__(var)) -1) > 0)
#else
# define BARF_UNLESS_AN_ARRAY(arr) 0
# define BARF_UNLESS_COPYABLE(dst, src) \
BUILD_ASSERT_OR_ZERO(0 ? ((*(dst) = *(src)), 0) : \
sizeof(*(dst)) == sizeof(*(src)))
+
+# define BARF_UNLESS_SIGNED(var) 0
+# define BARF_UNLESS_UNSIGNED(var) 0
#endif
+
/*
* ARRAY_SIZE - get the number of elements in a visible array
* @x: the array whose size you want.