Bug 26479 - UBSAN error: gas/config/tc-nios2.c:244:36:
Summary: UBSAN error: gas/config/tc-nios2.c:244:36:
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 12:35 UTC by Martin Liska
Modified: 2020-08-31 11:05 UTC (History)
0 users

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Target:
Build:
Last reconfirmed: 2020-08-31 00:00:00


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Description Martin Liska 2020-08-20 12:35:40 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=nios2-linux CFLAGS="-g -O2 -fsanitize=address,undefined -Wno-error" CXXLAGS="-g -O2 -fsanitize=address,undefined -Wno-error" LDFLAGS="-ldl"
Target: nios2-linux
PASS: NIOS2 R2 align_fill
Executing on host: sh -c {../as-new     -o tmpdir/align_fill.o /home/mliska/Programming/binutils/gas/testsuite/gas/nios2/align_fill.s 2>&1}  /dev/null dump.tmp (timeout = 300)
/home/mliska/Programming/binutils/gas/config/tc-nios2.c:244:36: runtime error: left shift of 222 by 24 places cannot be represented in type 'int'
Comment 1 cvs-commit@gcc.gnu.org 2020-08-31 11:00:09 UTC
The master branch has been updated by Alan Modra <amodra@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=baeb994f3f6bf2b416676ad269f262675ab9d774

commit baeb994f3f6bf2b416676ad269f262675ab9d774
Author: Alan Modra <amodra@gmail.com>
Date:   Mon Aug 31 15:51:24 2020 +0930

    PR26479 UBSAN: tc-nios2.c:244 left shift cannot be represented
    
            PR 26479
            * config/tc-nios2.c (md_chars_to_number): Cast buf[i] before shifting.
Comment 2 Alan Modra 2020-08-31 11:05:46 UTC
Fixed