From: Alan Modra <amodra@gmail.com>
To: binutils@sourceware.org
Subject: ubsan: undefined shift in frag_align_code
Date: Thu, 2 Jun 2022 17:08:27 +0930 [thread overview]
Message-ID: <Ypho865Bp3hca0ie@squeak.grove.modra.org> (raw)
* frags.c (MAX_MEM_FOR_RS_ALIGN_CODE): Avoid signed integer
overflow.
diff --git a/gas/frags.c b/gas/frags.c
index f5afe1a49b5..8e88496f37c 100644
--- a/gas/frags.c
+++ b/gas/frags.c
@@ -367,7 +367,7 @@ frag_align_pattern (int alignment, const char *fill_pattern,
# ifndef HANDLE_ALIGN
# define MAX_MEM_FOR_RS_ALIGN_CODE 1
# else
-# define MAX_MEM_FOR_RS_ALIGN_CODE ((1 << alignment) - 1)
+# define MAX_MEM_FOR_RS_ALIGN_CODE (((size_t) 1 << alignment) - 1)
# endif
#endif
--
Alan Modra
Australia Development Lab, IBM
next reply other threads:[~2022-06-02 7:38 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-02 7:38 Alan Modra [this message]
2022-06-03 13:23 ` Alan Modra
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