[Bug bootstrap/97527] OpenBSD bootstrap fails with out of memory allocating 8 bytes after a total of 0 bytes

["tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97527

--- Comment #9 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Created attachment 49423
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49423&action=edit
config.log from libgomp using binutils compiled with gcc 8.4.0

Using the binutils compiled with gcc 8.4 now leads to an error in
libgomp configure, apparently because of some collision with LTO
symbols (???)

gmake[4]: Leaving directory
'/home/tkoenig/trunk-bin/x86_64-unknown-openbsd6.8/libgcc'
gmake[3]: Leaving directory
'/home/tkoenig/trunk-bin/x86_64-unknown-openbsd6.8/libgcc'
Checking multilib configuration for libgomp...
Configuring stage 1 in x86_64-unknown-openbsd6.8/libgomp
configure: loading cache ./config.cache
checking for --enable-version-specific-runtime-libs... no
checking for --enable-generated-files-in-srcdir... no
checking build system type... x86_64-unknown-openbsd6.8
checking host system type... x86_64-unknown-openbsd6.8
checking target system type... x86_64-unknown-openbsd6.8
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/local/bin/gmkdir -p
checking for gawk... gawk
checking whether gmake sets $(MAKE)... yes
checking whether gmake supports nested variables... yes
checking for x86_64-unknown-openbsd6.8-gcc...
/home/tkoenig/trunk-bin/./gcc/xgcc -B/home/tkoenig/trunk-bin/./gcc/
-B/home/tkoenig/x86_64-unknown-openbsd6.8/bin/
-B/home/tkoenig/x86_64-unknown-openbsd6.8/lib/ -isystem
/home/tkoenig/x86_64-unknown-openbsd6.8/include -isystem
/home/tkoenig/x86_64-unknown-openbsd6.8/sys-include   -fno-checking
checking whether the C compiler works... no
configure: error: in
`/home/tkoenig/trunk-bin/x86_64-unknown-openbsd6.8/libgomp':
configure: error: C compiler cannot create executables
See `config.log' for more details
gmake[2]: *** [Makefile:24794: configure-stage1-target-libgomp] Error 77
gmake[2]: Leaving directory '/home/tkoenig/trunk-bin'
gmake[1]: *** [Makefile:27002: stage1-bubble] Error 2
gmake[1]: Leaving directory '/home/tkoenig/trunk-bin'
gmake: *** [Makefile:1004: all] Error 2

The suspicious part is

configure:3910: checking whether the C compiler works
configure:3932: /home/tkoenig/trunk-bin/./gcc/xgcc
-B/home/tkoenig/trunk-bin/./gcc/ -B/home/tkoenig/x86_64-unknown-openbsd6.8/bin/
-B/home/tkoenig/x86_64-unknown-openbsd6.8/lib/ -isystem
/home/tkoenig/x86_64-unknown-openbsd6.8/include -isystem
/home/tkoenig/x86_64-unknown-openbsd6.8/sys-include   -fno-checking -g -O2  
conftest.c  >&5
Wrong dl symbols!
/home/tkoenig/x86_64-unknown-openbsd6.8/bin/ld:
/home/tkoenig/trunk-bin/./gcc/liblto_plugin.so: error loading plugin: Wrong dl
symbols!

collect2: error: ld returned 1 exit status
configure:3936: $? = 1
configure:3974: result: no
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME "GNU Offloading and Multi Processing Runtime Library"
| #define PACKAGE_TARNAME "libgomp"
| #define PACKAGE_VERSION "1.0"
| #define PACKAGE_STRING "GNU Offloading and Multi Processing Runtime Library
1.0"
| #define PACKAGE_BUGREPORT ""
| #define PACKAGE_URL "http://www.gnu.org/software/libgomp/"
| #define PACKAGE "libgomp"
| #define VERSION "1.0"
| /* end confdefs.h.  */
| 
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:3979: error: in
`/home/tkoenig/trunk-bin/x86_64-unknown-openbsd6.8/libgomp':
configure:3981: error: C compiler cannot create executables
See `config.log' for more details