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TheRock/compiler/amd-llvm/lld/test/ELF/linkerscript/empty-preinit-array-start-stop.test
derek.holloway 7502bf64a4
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2026-09-02 16:34:47 -07:00

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# REQUIRES: x86
# RUN: split-file %s %t
# RUN: llvm-mc -filetype=obj -triple=x86_64 %t/t.s -o %t.o
## PR52534: https://bugs.llvm.org/show_bug.cgi?id=52534
## Check case where .preinit_array would be discarded in the absence of the
## start/stop symbols.
## Link should succeed without causing an out of range relocation error.
# RUN: ld.lld -T %t/discarded.script %t.o -o %t1 --image-base=0x80000000
# RUN: llvm-readelf -s %t1 | FileCheck --check-prefixes=CHECK,DISCARDED %s
## Check case where .preinit_array is emitted but empty.
# RUN: ld.lld -T %t/empty.script %t.o -o %t2
# RUN: llvm-readelf -s %t2 | FileCheck --check-prefixes=CHECK,EMPTY %s
# CHECK: [[#%x,ADDR:]] 0 NOTYPE LOCAL HIDDEN [[#]] __preinit_array_start
# CHECK-NEXT: [[#ADDR]] 0 NOTYPE LOCAL HIDDEN [[#]] __preinit_array_end
# DISCARDED-NEXT: {{0*}}[[#ADDR-14]] 0 NOTYPE GLOBAL DEFAULT [[#]] _start
# EMPTY-NOT: [[#ADDR]] 0 NOTYPE GLOBAL DEFAULT [[#]] _start
# EMPTY: [[#ADDR]] 0 NOTYPE GLOBAL DEFAULT [[#]] ADDR
#--- t.s
.global _start
_start:
movq __preinit_array_start@GOTPCREL(%rip),%rax
movq __preinit_array_end@GOTPCREL(%rip),%rax
.section .rodata,"a"
.byte 0
#--- discarded.script
SECTIONS {
.rodata : { *(.rodata); }
.text : { *(.text); }
.preinit_array : { *(.preinit_array); }
}
#--- empty.script
SECTIONS {
.text : { *(.text); }
.preinit_array : { ADDR = .; *(.preinit_array); }
}