X-Git-Url: https://git.cworth.org/git?p=tar;a=blobdiff_plain;f=gnu%2Fstdbool.in.h;fp=gnu%2Fstdbool.in.h;h=ea7ead5cddc2883cf6d4d6ef563ed0a492c927a9;hp=39d1847dca8b5ec8f72f88a5b2a217f0b593b4e9;hb=de7372b23c3da92fbfaea2d1ac592f0b2ba87914;hpb=fbbfb9406a82e647ce27b6462b11a802fa48f31a

diff --git a/gnu/stdbool.in.h b/gnu/stdbool.in.h
index 39d1847..ea7ead5 100644
--- a/gnu/stdbool.in.h
+++ b/gnu/stdbool.in.h
@@ -52,6 +52,9 @@
          with this substitute.  With this substitute, only the values 0 and 1
          give the expected result when converted to _Bool' or 'bool'.
 
+       - C99 allows the use of (_Bool)0.0 in constant expressions, but
+         this substitute cannot always provide this property.
+
    Also, it is suggested that programs use 'bool' rather than '_Bool';
    this isn't required, but 'bool' is more common.  */