048a669b92
We found that when you pass --allow-multiple-definitions or `-z muldefs` to GNU linkers, they don't complain about duplicate symbols at all. They don't even print out warnings on it. We emit warnings in that case. If you pass --fatal-warnings, that difference results in a link failure. Differential Revision: https://reviews.llvm.org/D44549 llvm-svn: 327920
36 lines
1.2 KiB
ArmAsm
36 lines
1.2 KiB
ArmAsm
# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t1
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# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/allow-multiple-definition.s -o %t2
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# RUN: not ld.lld %t1 %t2 -o %t3
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# RUN: not ld.lld --allow-multiple-definition --no-allow-multiple-definition %t1 %t2 -o %t3
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# RUN: ld.lld --allow-multiple-definition --fatal-warnings %t1 %t2 -o %t3
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# RUN: ld.lld --allow-multiple-definition --fatal-warnings %t2 %t1 -o %t4
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# RUN: llvm-objdump -d %t3 | FileCheck %s
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# RUN: llvm-objdump -d %t4 | FileCheck -check-prefix=REVERT %s
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# RUN: ld.lld -z muldefs --fatal-warnings %t1 %t2 -o %t3
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# RUN: ld.lld -z muldefs --fatal-warnings %t2 %t1 -o %t4
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# RUN: llvm-objdump -d %t3 | FileCheck %s
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# RUN: llvm-objdump -d %t4 | FileCheck -check-prefix=REVERT %s
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# inputs contain different constants for instuction movl.
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# Tests below checks that order of files in command line
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# affects on what symbol will be used.
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# If flag allow-multiple-definition is enabled the first
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# meet symbol should be used.
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# CHECK: _bar:
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# CHECK-NEXT: 201000: b8 01 00 00 00 movl $1, %eax
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# REVERT: _bar:
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# REVERT-NEXT: 201000: b8 02 00 00 00 movl $2, %eax
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.globl _bar
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.type _bar, @function
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_bar:
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mov $1, %eax
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.globl _start
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_start:
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