https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121588
Bug ID: 121588
Summary: gcc 15.2.0 crashes when building u-boot 2022.07 with
LTO
Product: gcc
Version: 15.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: faber at faberman dot de
Target Milestone: ---
while building u-boot v2022.07 for a set of different architectures, one of
them (arm(hf) for am335x) crashed:
----------------------snip------------------------
AR spl/lib/built-in.o
KSL spl/keep-syms-lto.c
KSLCC spl/keep-syms-lto.o
LTO spl/u-boot-spl
during IPA pass: icf
lto1: internal compiler error: Segmentation fault
0x60c0cdd3fffa diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, __va_list_tag
(*) [1], diagnostic_t)
???:0
0x60c0cdd51bc6 internal_error(char const*, ...)
???:0
0x60c0ccd2e229 lto_get_decl_name_mapping(lto_file_decl_data*, char const*)
???:0
0x60c0cc9fd149 cgraph_node::get_untransformed_body()
???:0
0x60c0cdc0feb9 ipa_icf::sem_function::init(ipa_icf_gimple::func_checker*)
???:0
0x60c0cdc12ad1 ipa_icf::sem_item_optimizer::parse_nonsingleton_classes()
???:0
0x60c0cdc1bccc ipa_icf::sem_item_optimizer::execute()
???:0
0x60c0cdc1d11a ipa_icf::pass_ipa_icf::execute(function*)
???:0
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://bugs.gentoo.org/> for instructions.
lto-wrapper: fatal error: /usr/sbin/arm-linux-gnueabi-gcc returned 1 exit
status
compilation terminated.
----------------------snip------------------------
gcc is 15.2.0 release:
----------------------snip------------------------
$ arm-linux-gnueabi-gcc --version
arm-linux-gnueabi-gcc (Gentoo Hardened 15.2.0 p5) 15.2.0
----------------------snip------------------------
Weirdly all other targets, including other arm- and armhf-targets, LTO and
non-LTO, built successfully. The target which crashed builds fine without LTO
(disabling it is our current workaround).
We could reproduce the behaviour with a vanilla v2022.07 u-boot:
----------------------snip--------------------------
$ git clone https://github.com/u-boot/u-boot.git
$ cd u-boot
$ git checkout tags/v2022.07
$ ARCH=arm CROSS_COMPILE=/usr/sbin/arm-linux-gnueabi- make am335x_evm_defconfig
----------------------snip--------------------------
This non-LTO config should build, now add `CONFIG_LTO=y` to the .config file,
clean and build again: Segfault.
