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-rw-r--r--Misc/SpecialBuilds.txt4
-rw-r--r--Objects/obmalloc.c4
2 files changed, 6 insertions, 2 deletions
diff --git a/Misc/SpecialBuilds.txt b/Misc/SpecialBuilds.txt
index f869e7c05e..646ac2344c 100644
--- a/Misc/SpecialBuilds.txt
+++ b/Misc/SpecialBuilds.txt
@@ -105,7 +105,9 @@ negative indices differs from a Python slice):
p[-2*S:-S]
Number of bytes originally asked for. This is a size_t, big-endian (easier
to read in a memory dump).
-p[-S:0]
+p[-S]
+ API ID. See PEP 445. This is a character, but seems undocumented.
+p[-S+1:0]
Copies of FORBIDDENBYTE. Used to catch under- writes and reads.
p[0:N]
The requested memory, filled with copies of CLEANBYTE, used to catch
diff --git a/Objects/obmalloc.c b/Objects/obmalloc.c
index db774b8423..2ab66a33b9 100644
--- a/Objects/obmalloc.c
+++ b/Objects/obmalloc.c
@@ -1702,7 +1702,9 @@ pool_is_in_list(const poolp target, poolp list)
p[0: S]
Number of bytes originally asked for. This is a size_t, big-endian (easier
to read in a memory dump).
-p[S: 2*S]
+p[S}
+ API ID. See PEP 445. This is a character, but seems undocumented.
+p[S+1: 2*S]
Copies of FORBIDDENBYTE. Used to catch under- writes and reads.
p[2*S: 2*S+n]
The requested memory, filled with copies of CLEANBYTE.