GDB 8.2 fails to load LTO applications

The problem occurs with gcc-arm-none-eabi-8-2018-q4-major and does not occur with gcc-arm-none-eabi-7-2017-q4-major.

It is an assert related to dwarf and occurs while GDB tries to load an .elf that was compiled with -flto.

Retaining the latest version of the compiler but reverting only GDB to the previous version (GNU gdb (GNU Tools for Arm Embedded Processors 7-2017-q4-major) 8.0.50.20171128-git) fixes the problem, so I expect the new GDB (GNU gdb (GNU Tools for Arm Embedded Processors 8-2018-q4-major) 8.2.50.20181213-git) is to blame.

The GDB trace captured by Eclipse is below.

Any suggestions how to proceed? Report this via the GNU bugzilla?

Regards,

Liviu

551,953 &"symbol-file /Users/ilg/Desktop/eclipse-workspace-2018-12/f4b-lto-test/Debug/f4b-lto-test.e\
lf\n"
551,953 ~"Reading symbols from /Users/ilg/Desktop/eclipse-workspace-2018-12/f4b-lto-test/Debug/f4b-l\
to-test.elf...\n"
551,962 30^done
551,962 (gdb)
551,964 &"load /Users/ilg/Desktop/eclipse-workspace-2018-12/f4b-lto-test/Debug/f4b-lto-test.elf\n"
551,964 ~"Loading section .isr_vector, size 0x3bc lma 0x8000000\n"
551,966 31+download,{section=".isr_vector",section-size="956",total-size="934014"}
551,966 31+download,{section=".isr_vector",section-sent="956",section-size="956",total-sent="956",to\
tal-size="934014"}
551,966 ~"Loading section .inits, size 0x28 lma 0x80003bc\n"
551,968 31+download,{section=".inits",section-size="40",total-size="934014"}
551,968 ~"Loading section .text, size 0xcf3 lma 0x80003f0\n"
551,968 31+download,{section=".text",section-size="3315",total-size="934014"}
551,968 ~"Loading section .data, size 0x74 lma 0x80010e4\n"
551,969 31+download,{section=".data",section-size="116",total-size="934014"}
551,969 ~"Start address 0x80002a4, load size 4427\n"
552,406 ~"Transfer rate: 864 KB/sec, 1106 bytes/write.\n"

552,407 ~"/tmp/jenkins-GCC-8-build-toolchain-mac_cluster-128_20181216_1544945247/src/gdb/gdb/dwarf2r\
ead.c:9809: internal-error: void dw2_add_symbol_to_list(struct symbol *, struct pending **): Asserti\
on `(*listhead) == NULL || (SYMBOL_LANGUAGE ((*listhead)->symbol[0]) == SYMBOL_LANGUAGE (symbol))' f\
ailed.\nA problem internal to GDB has been detected,\nfurther debugging may prove unreliable.\nQuit \
this debugging session? "
552,408 ~"(y or n) [answered Y; input not from terminal]\n"
552,408 &"\nThis is a bug, please report it."
552,408 &" For instructions, see:\n<http://www.gnu.org/software/gdb/bugs/>."
552,408 &"\n\n"
552,408 ~"/tmp/jenkins-GCC-8-build-toolchain-mac_cluster-128_20181216_1544945247/src/gdb/gdb/dwarf2r\
ead.c:9809: internal-error: void dw2_add_symbol_to_list(struct symbol *, struct pending **): Asserti\
on `(*listhead) == NULL || (SYMBOL_LANGUAGE ((*listhead)->symbol[0]) == SYMBOL_LANGUAGE (symbol))' f\
ailed.\nA problem internal to GDB has been detected,\nfurther debugging may prove unreliable.\nCreat\
e a core file of GDB? "
552,409 ~"(y or n) [answered Y; input not from terminal]\n"