Bug 26502 - UBSAN error: gas/config/tc-tic6x.c:3945:12:
Summary: UBSAN error: gas/config/tc-tic6x.c:3945:12:
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 12:44 UTC by Martin Liska
Modified: 2020-08-31 11:07 UTC (History)
0 users

See Also:
Host:
Target:
Build:
Last reconfirmed: 2020-08-31 00:00:00


Attachments

Note You need to log in before you can comment on or make changes to this bug.
Description Martin Liska 2020-08-20 12:44:19 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=tic6x-elf CFLAGS="-g -O2 -fsanitize=address,undefined -Wno-error" CXXLAGS="-g -O2 -fsanitize=address,undefined -Wno-error" LDFLAGS="-ldl"
Target: tic6x-elf
FAIL: C6X bad relocations 2
Executing on host: sh -c {../as-new     -o tmpdir/reloc-bad-3.o /home/mliska/Programming/binutils/gas/testsuite/gas/tic6x/reloc-bad-3.s 2>&1}  /dev/null dump.tmp (timeout = 300)
/home/mliska/Programming/binutils/gas/config/tc-tic6x.c:3945:12: runtime error: left shift of negative value -1

UBSAN error: gas/config/tc-tic6x.c:3973:12: 
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=tic6x-elf CFLAGS="-g -O2 -fsanitize=address,undefined -Wno-error" CXXLAGS="-g -O2 -fsanitize=address,undefined -Wno-error" LDFLAGS="-ldl"
Target: tic6x-elf
FAIL: C6X bad relocations 2
Executing on host: sh -c {../as-new     -o tmpdir/reloc-bad-3.o /home/mliska/Programming/binutils/gas/testsuite/gas/tic6x/reloc-bad-3.s 2>&1}  /dev/null dump.tmp (timeout = 300)
/home/mliska/Programming/binutils/gas/config/tc-tic6x.c:3973:12: runtime error: left shift of negative value -1
Comment 1 cvs-commit@gcc.gnu.org 2020-08-31 11:00:29 UTC
The master branch has been updated by Alan Modra <amodra@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=94f360ea2ffcee8a06cdda62df73b49c75e9a089

commit 94f360ea2ffcee8a06cdda62df73b49c75e9a089
Author: Alan Modra <amodra@gmail.com>
Date:   Mon Aug 31 17:16:21 2020 +0930

    PR26502 UBSAN: tc-tic6x.c left shift of negative value
    
            PR 26502
            * config/tc-tic6x.c (md_apply_fix): Use unsigned variables.
Comment 2 Alan Modra 2020-08-31 11:07:26 UTC
Fixed