Bug 26481

Summary: UBSAN error: gas/config/tc-pj.c:281:31:
Product: binutils Reporter: Martin Liska <mliska>
Component: binutilsAssignee: Alan Modra <amodra>
Status: RESOLVED FIXED    
Severity: normal    
Priority: P2    
Version: 2.34   
Target Milestone: 2.36   
Host: Target:
Build: Last reconfirmed: 2020-08-29 00:00:00

Description Martin Liska 2020-08-20 12:36:19 UTC
The following fails when I build binutils with:
configure --build=x86_64-linux --disable-nls --disable-gdb --disable-gdbserver --disable-sim --disable-readline --disable-libdecnumber --enable-obsolete --target=pj-elf CFLAGS="-g -O2 -fsanitize=address,undefined -Wno-error" CXXLAGS="-g -O2 -fsanitize=address,undefined -Wno-error" LDFLAGS="-ldl"
Target: pj-elf
PASS: .exitm outside of a macro
Executing on host: sh -c {../as-new     -o tmpdir/ops.o /home/mliska/Programming/binutils/gas/testsuite/gas/pj/ops.s 2>&1}  /dev/null dump.tmp (timeout = 300)
/home/mliska/Programming/binutils/gas/config/tc-pj.c:281:31: runtime error: index 2 out of bounds for type 'unsigned char [2]'
Comment 1 cvs-commit@gcc.gnu.org 2020-08-29 04:25:09 UTC
The master branch has been updated by Alan Modra <amodra@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=8a267ea84798eb4e6547c8ff2617d2377d83c118

commit 8a267ea84798eb4e6547c8ff2617d2377d83c118
Author: Alan Modra <amodra@gmail.com>
Date:   Sat Aug 29 10:46:59 2020 +0930

    PR26481 UBSAN: tc-pj.c:281 index out of bounds
    
            PR 26481
            * config/tc-pj.c (md_assemble): Don't loop past end of
            opcode->arg array.
Comment 2 Alan Modra 2020-08-29 04:25:50 UTC
.