https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119864
--- Comment #2 from Pilar Latiesa <pilarlatiesa at gmail dot com> --- It seems that as is failing because of a duplicate symbol. This is the content of m.s generated with -save-temps: .file "m.cpp" .text .globl _ZGIW1m .type _ZGIW1m, @function _ZGIW1m: .LFB0: .cfi_startproc pushq %rbp .cfi_def_cfa_offset 16 .cfi_offset 6, -16 movq %rsp, %rbp .cfi_def_cfa_register 6 nop popq %rbp .cfi_def_cfa 7, 8 ret .cfi_endproc .LFE0: .size _ZGIW1m, .-_ZGIW1m .globl _ZGIW1m .type _ZGIW1m, @function _ZGIW1m: .LFB1: .cfi_startproc pushq %rbp .cfi_def_cfa_offset 16 .cfi_offset 6, -16 movq %rsp, %rbp .cfi_def_cfa_register 6 nop popq %rbp .cfi_def_cfa 7, 8 ret .cfi_endproc .LFE1: .size _ZGIW1m, .-_ZGIW1m .ident "GCC: (GNU) 15.0.1 20250418 (prerelease)" .section .note.GNU-stack,"",@progbits