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authorKarl Williamson <public@khwilliamson.com>2013-12-31 21:57:53 -0700
committerKarl Williamson <public@khwilliamson.com>2014-01-01 13:49:24 -0700
commit7c08c4c54fcfe6d3c4509e5c583cbb38723f9237 (patch)
tree5d9c2fc6523cf257273e7f17bb5e5f932e2bfdd6 /warnings.h
parent13d7a909b7642a181b072c1236932573b500a779 (diff)
downloadperl-7c08c4c54fcfe6d3c4509e5c583cbb38723f9237.tar.gz
regen/warnings.pl: Add comments
These note that warnings categories should be independent in the calls to ckWARN() and packWARN() type macros.
Diffstat (limited to 'warnings.h')
-rw-r--r--warnings.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/warnings.h b/warnings.h
index 7455a6cdc1..929b94faf7 100644
--- a/warnings.h
+++ b/warnings.h
@@ -116,6 +116,10 @@
char))
#define ckWARN(w) Perl_ckwarn(aTHX_ packWARN(w))
+
+/* The w1, w2 ... should be independent warnings categories; one shouldn't be
+ * a subcategory of any other */
+
#define ckWARN2(w1,w2) Perl_ckwarn(aTHX_ packWARN2(w1,w2))
#define ckWARN3(w1,w2,w3) Perl_ckwarn(aTHX_ packWARN3(w1,w2,w3))
#define ckWARN4(w1,w2,w3,w4) Perl_ckwarn(aTHX_ packWARN4(w1,w2,w3,w4))
@@ -128,6 +132,10 @@
#define WARNshift 8
#define packWARN(a) (a )
+
+/* The a, b, ... should be independent warnings categories; one shouldn't be
+ * a subcategory of any other */
+
#define packWARN2(a,b) ((a) | ((b)<<8) )
#define packWARN3(a,b,c) ((a) | ((b)<<8) | ((c)<<16) )
#define packWARN4(a,b,c,d) ((a) | ((b)<<8) | ((c)<<16) | ((d) <<24))