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1 # REQUIRES: x86
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2 # RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
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3 # RUN: ld.lld -shared %t.o -o %t.so
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4
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5 # RUN: echo '.data; .weak foo; .quad foo' | llvm-mc -filetype=obj -triple=x86_64 - -o %t1.o
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6 # RUN: echo '.data; .quad foo' | llvm-mc -filetype=obj -triple=x86_64 - -o %t2.o
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7 # RUN: ld.lld -shared %t2.o -o %t2.so
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8
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9 ## If the first undefined reference is weak, the binding changes to
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10 ## STB_WEAK.
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11 # RUN: ld.lld %t1.o %t.so -o %t
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12 # RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=WEAK %s
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13 # RUN: ld.lld %t.so %t1.o -o %t
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14 # RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=WEAK %s
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15
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16 ## The binding remains STB_WEAK if there is no STB_GLOBAL undefined reference.
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17 # RUN: ld.lld %t1.o %t.so %t1.o -o %t
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18 # RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=WEAK %s
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19 # RUN: ld.lld %t.so %t1.o %t1.o -o %t
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20 # RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=WEAK %s
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21
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22 ## The binding changes back to STB_GLOBAL if there is a STB_GLOBAL undefined reference.
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23 # RUN: ld.lld %t1.o %t.so %t2.o -o %t
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24 # RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=GLOBAL %s
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25 # RUN: ld.lld %t2.o %t.so %t1.o -o %t
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26 # RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=GLOBAL %s
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27
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28 ## Check the binding (weak) is not affected by the STB_GLOBAL undefined
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29 ## reference in %t2.so
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30 # RUN: ld.lld %t1.o %t2.so -o %t
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31 # RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=WEAK %s
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32
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33 # RUN: ld.lld %t2.so %t1.o -o %t
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34 # RUN: llvm-readelf --dyn-syms %t | FileCheck --check-prefix=WEAK %s
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35
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36 # WEAK: NOTYPE WEAK DEFAULT UND foo
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37 # GLOBAL: NOTYPE GLOBAL DEFAULT UND foo
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38
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39 .globl foo
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40 foo:
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