From: Alan Modra <amodra@gmail.com>
Date: Wed, 26 Feb 2020 02:08:11 +0000 (+1030)
Subject: gas strncpy warning
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=42135cadf5a3097df340eb85e96c0109a9842907;p=binutils-gdb.git

gas strncpy warning

Avoid a warning that the buffer may not be zero terminated.

	* read.c (read_a_source_file): Call strncpy with length one
	less than size of original_case_string.
---

diff --git a/gas/ChangeLog b/gas/ChangeLog
index d00fb876536..001af54cb5f 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+2020-02-26  Alan Modra  <amodra@gmail.com>
+
+	* read.c (read_a_source_file): Call strncpy with length one
+	less than size of original_case_string.
+
 2020-02-26  Alan Modra  <amodra@gmail.com>
 
 	* config/obj-elf.c: Indent labels correctly.
diff --git a/gas/read.c b/gas/read.c
index e603099e940..784d6a8f79e 100644
--- a/gas/read.c
+++ b/gas/read.c
@@ -1052,7 +1052,8 @@ read_a_source_file (const char *name)
 		  {
 		    char *s2 = s;
 
-		    strncpy (original_case_string, s2, sizeof (original_case_string));
+		    strncpy (original_case_string, s2,
+			     sizeof (original_case_string) - 1);
 		    original_case_string[sizeof (original_case_string) - 1] = 0;
 
 		    while (*s2)