URL:
<http://savannah.nongnu.org/bugs/?35093>
Summary: strlcat_P fails for some destinations
Project: AVR C Runtime Library
Submitted by: glguy
Submitted on: Sat 17 Dec 2011 12:31:48 AM GMT
Category: Library
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: libc code
Status: None
Percent Complete: 0%
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Release: 1.7.*
Fixed Release: None
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Details:
In 2009 the strlcat_P function treats the X register as an 8-bit instead of
16-bit register in one case which will cause a failure when the null
terminator in the destination string is at the end of a 256-byte aligned
region of memory.
This file can be found in libc/pmstring/strlcat_P.S
--- strlcat_P.S.old 2011-12-16 16:20:59.000000000 -0800
+++ strlcat_P.S 2011-12-16 16:21:10.000000000 -0800
@@ -99,7 +99,7 @@
ld __tmp_reg__, X+
tst __tmp_reg__
brne 1b
- subi XL, 1
+ sbiw XL, 1
rjmp 3f
; copy loop
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