Bug 26431 - UBSAN error: ld/pe-dll.c:568:7:
Summary: UBSAN error: ld/pe-dll.c:568:7:
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 12:14 UTC by Martin Liska
Modified: 2020-08-26 14:37 UTC (History)
0 users

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Host:
Target:
Build:
Last reconfirmed: 2020-08-26 00:00:00


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Description Martin Liska 2020-08-20 12:14:50 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=arm-pe CFLAGS="-g -O2 -fsanitize=address,undefined -Wno-error" CXXLAGS="-g -O2 -fsanitize=address,undefined -Wno-error" LDFLAGS="-ldl"
Target: arm-pe
PASS: ld-pe/orphan_nu
Executing on host: sh -c {./ld-new   -L/home/mliska/Programming/binutils/ld/testsuite/ld-pe  -shared --out-implib dx.dll.a --gc-sections -o tmpdir/dump tmpdir/pr19803.o  2>&1}  /dev/null dump.tmp (timeout = 300)
/home/mliska/Programming/binutils/ld/pe-dll.c:568:7: runtime error: null pointer passed as argument 2, which is declared to never be null
Comment 1 cvs-commit@gcc.gnu.org 2020-08-26 13:54:37 UTC
The master branch has been updated by Alan Modra <amodra@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=aaf9875ef9252ec42bafac076421cc5ff22965ad

commit aaf9875ef9252ec42bafac076421cc5ff22965ad
Author: Alan Modra <amodra@gmail.com>
Date:   Wed Aug 26 14:23:42 2020 +0930

    PR26431 UBSAN: pe-dll.c:568 null pointer bsearch
    
            PR 26431
            * pe-dll.c (auto_export): Don't call bsearch with zero count.
Comment 2 Alan Modra 2020-08-26 14:37:12 UTC
Fixed