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llvm-project/lld/test/COFF/duplicate.test

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COFF: handle multiply defined symbols with different storage If a symbol is locally defined and is DLL imported in another translation unit, and the object with the locally defined version is loaded prior to the imported version, then the linker will fail to resolve the definition of the thunk and return the locally defined symbol. This will then be attempted to be cast to an import thunk, which will clearly fail. Only return the thunk if the symbol is inserted or a thunk is created. Otherwise, report a duplication error. llvm-svn: 312386
2017-09-02 06:12:10 +08:00
RUN: llc -mtriple x86_64-windows-msvc -filetype obj -o alpha.obj %S/Inputs/alpha.ll
RUN: llc -mtriple x86_64-windows-msvc -filetype obj -o beta.obj %S/Inputs/beta.ll
RUN: lld-link /out:alpha.dll /dll alpha.obj /implib:alpha.lib
RUN: not lld-link /out:beta.dll /dll alpha.obj beta.obj alpha.lib 2>&1 | FileCheck %s -check-prefix CHECK-ALPHA
CHECK-ALPHA: error: duplicate symbol: f in {{.*}}alpha.obj and in alpha.dll
RUN: llc -mtriple x86_64-windows-msvc -filetype obj -o gamma.obj %S/Inputs/gamma.ll
RUN: not lld-link /out:gamma.exe /subsystem:console /entry:mainCRTStartup gamma.obj alpha.lib 2>&1 | FileCheck %s -check-prefix CHECK-GAMMA
CHECK-GAMMA: error: duplicate symbol: __imp_f in {{.*}}gamma.obj and in alpha.dll