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69ae29b1d1
If you pass /delayload:<dllname> to the COFF linker, it creates thunks so that DLLs are loaded when they are used for the first time instead of load-time. This mechanism do not work for data symbols as there's no way to trap acccesses to data imported from DLLs. (Technically, I think if we do not initially map dllimport tables in memory, we could actually trap accesses and delay-load data symbols, but that's not what Windows do.) This patch is to report an error when you try to delay-load data symbols. Fixes https://bugs.llvm.org/show_bug.cgi?id=33106 Differential Revision: https://reviews.llvm.org/D33557 llvm-svn: 303890
47 lines
1.5 KiB
Plaintext
47 lines
1.5 KiB
Plaintext
# RUN: mkdir -p %t.dir
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# RUN: yaml2obj < %p/Inputs/delayimports-error.yaml > %t1.obj
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# RUN: lld-link /out:%t.dir/foo.dll /dll %t1.obj /export:datasym,DATA /noentry
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# RUN: yaml2obj < %s > %t2.obj
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# RUN: not lld-link /out:%t.exe /entry:main %t2.obj %t.dir/foo.lib /delayload:foo.dll \
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# RUN: /alternatename:__delayLoadHelper2=main /opt:noref >& %t.log
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# RUN: FileCheck %s < %t.log
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# CHECK: cannot delay-load foo.dll due to import of data: __imp_datasym
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--- !COFF
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header:
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Machine: IMAGE_FILE_MACHINE_AMD64
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Characteristics: []
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sections:
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- Name: .text
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Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
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Alignment: 16
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SectionData: 0000000000000000
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symbols:
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- Name: .text
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Value: 0
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SectionNumber: 1
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SimpleType: IMAGE_SYM_TYPE_NULL
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ComplexType: IMAGE_SYM_DTYPE_NULL
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StorageClass: IMAGE_SYM_CLASS_STATIC
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SectionDefinition:
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Length: 8
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NumberOfRelocations: 0
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NumberOfLinenumbers: 0
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CheckSum: 0
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Number: 0
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- Name: main
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Value: 0
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SectionNumber: 1
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SimpleType: IMAGE_SYM_TYPE_NULL
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ComplexType: IMAGE_SYM_DTYPE_FUNCTION
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StorageClass: IMAGE_SYM_CLASS_EXTERNAL
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- Name: __imp_datasym
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Value: 0
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SectionNumber: 0
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SimpleType: IMAGE_SYM_TYPE_NULL
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ComplexType: IMAGE_SYM_DTYPE_NULL
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StorageClass: IMAGE_SYM_CLASS_EXTERNAL
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...
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