postgres.git / summary / log / commit / refs

commit    75c155f65b046686242ece4bbfb688359f28feea
Author:   Alvaro Herrera <alvherre@alvh.no-ip.org>
Date:     Wed Jan 18 21:06:13 2017 +0000

    Change some test macros to return true booleans
    
    These macros work fine when they are used directly in an "if" test or
    similar, but as soon as the return values are assigned to boolean
    variables (or passed as boolean arguments to some function), they become
    bugs, hopefully caught by compiler warnings.  To avoid future problems,
    fix the definitions so that they return actual booleans.
    
    To further minimize the risk that somebody uses them in back-patched
    fixes that only work correctly in branches starting from the current
    master and not in old ones, back-patch the change to supported branches
    as appropriate.
    
    See also commit af4472bcb88ab36b9abbe7fd5858e570a65a2d1a, and the long
    discussion (and larger patch) in the thread mentioned in its commit
    message.
    
    Discussion: https://postgr.es/m/18672.1483022414@sss.pgh.pa.us


 src/include/access/htup_details.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/include/access/htup_details.h b/src/include/access/htup_details.h
index a4efcf4ec42..b4eca16973d 100644
--- a/src/include/access/htup_details.h
+++ b/src/include/access/htup_details.h
@@ -225,8 +225,8 @@ struct HeapTupleHeaderData
  */
 #define HEAP_LOCKED_UPGRADED(infomask) \
 ( \
-	 ((infomask) & HEAP_XMAX_IS_MULTI) && \
-	 ((infomask) & HEAP_XMAX_LOCK_ONLY) && \
+	 ((infomask) & HEAP_XMAX_IS_MULTI) != 0 && \
+	 ((infomask) & HEAP_XMAX_LOCK_ONLY) != 0 && \
 	 (((infomask) & (HEAP_XMAX_EXCL_LOCK | HEAP_XMAX_KEYSHR_LOCK)) == 0) \
 )
 
@@ -297,7 +297,7 @@ struct HeapTupleHeaderData
 
 #define HeapTupleHeaderXminCommitted(tup) \
 ( \
-	(tup)->t_infomask & HEAP_XMIN_COMMITTED \
+	((tup)->t_infomask & HEAP_XMIN_COMMITTED) != 0 \
 )
 
 #define HeapTupleHeaderXminInvalid(tup) \
@@ -465,7 +465,7 @@ do { \
 
 #define HeapTupleHeaderIsHeapOnly(tup) \
 ( \
-  (tup)->t_infomask2 & HEAP_ONLY_TUPLE \
+  ((tup)->t_infomask2 & HEAP_ONLY_TUPLE) != 0 \
 )
 
 #define HeapTupleHeaderSetHeapOnly(tup) \
@@ -480,7 +480,7 @@ do { \
 
 #define HeapTupleHeaderHasMatch(tup) \
 ( \
-  (tup)->t_infomask2 & HEAP_TUPLE_HAS_MATCH \
+  ((tup)->t_infomask2 & HEAP_TUPLE_HAS_MATCH) != 0 \
 )
 
 #define HeapTupleHeaderSetMatch(tup) \


[parent: 9e7f00d861ff]