Bug 26446 - UBSAN error: gas/config/tc-csky.c:2618:20:
Summary: UBSAN error: gas/config/tc-csky.c:2618:20:
Status: RESOLVED FIXED
Alias: None
Product: binutils
Classification: Unclassified
Component: binutils (show other bugs)
Version: 2.34
: P2 normal
Target Milestone: 2.36
Assignee: Alan Modra
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-08-20 12:22 UTC by Martin Liska
Modified: 2020-08-29 04:26 UTC (History)
0 users

See Also:
Host:
Target:
Build:
Last reconfirmed: 2020-08-29 00:00:00


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Description Martin Liska 2020-08-20 12:22:19 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=csky-elf CFLAGS="-g -O2 -fsanitize=address,undefined -Wno-error" CXXLAGS="-g -O2 -fsanitize=address,undefined -Wno-error" LDFLAGS="-ldl"
Target: csky-elf
PASS: csky - nolrw
Executing on host: sh -c {../as-new  -mcpu=ck803er1  -o tmpdir/enhance_dsp.o /home/mliska/Programming/binutils/gas/testsuite/gas/csky/enhance_dsp.s 2>&1}  /dev/null dump.tmp (timeout = 300)
/home/mliska/Programming/binutils/gas/config/tc-csky.c:2618:20: runtime error: index 4 out of bounds for type 'int [4]'
Comment 1 Martin Liska 2020-08-20 12:22:35 UTC
UBSAN error: gas/config/tc-csky.c:4022:22: 
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=csky-elf CFLAGS="-g -O2 -fsanitize=address,undefined -Wno-error" CXXLAGS="-g -O2 -fsanitize=address,undefined -Wno-error" LDFLAGS="-ldl"
Target: csky-elf
PASS: csky - nolrw
Executing on host: sh -c {../as-new  -mcpu=ck803er1  -o tmpdir/enhance_dsp.o /home/mliska/Programming/binutils/gas/testsuite/gas/csky/enhance_dsp.s 2>&1}  /dev/null dump.tmp (timeout = 300)
/home/mliska/Programming/binutils/gas/config/tc-csky.c:4022:22: runtime error: index 4 out of bounds for type 'int [4]'
Comment 2 cvs-commit@gcc.gnu.org 2020-08-29 04:25:14 UTC
The master branch has been updated by Alan Modra <amodra@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=0c0577f6a8498707a34cf21e4d1bc3357982c802

commit 0c0577f6a8498707a34cf21e4d1bc3357982c802
Author: Alan Modra <amodra@gmail.com>
Date:   Sat Aug 29 11:10:54 2020 +0930

    PR26446 UBSAN: tc-csky.c:2618,4022 index out of bounds
    
            PR 26446
            * csky-opc.h (MAX_OPRND_NUM): Define to 5.
            (union csky_operand): Use MAX_OPRND_NUM to size oprnds array.
Comment 3 Alan Modra 2020-08-29 04:26:25 UTC
.