# REQUIRES: x86 # RUN: llvm-mc -triple=x86_64-windows-gnu %s -filetype=obj -o %t.obj # RUN: llvm-readobj --symbols %t.obj | FileCheck %s --check-prefix=SYMBOL # RUN: lld-link -lldmingw -entry:main %t.obj -out:%t.exe -lldmap:%t.map -verbose # RUN: llvm-readobj --sections %t.exe | FileCheck %s # CHECK: Sections [ # CHECK: Section { # CHECK: Number: 2 # CHECK-LABEL: Name: .rdata (2E 72 64 61 74 61 00 00) # This is the critical check to show that .xdata$foo was # retained, while .xdata$bar wasn't. This *must* be 0x24 # (0x4 for the .xdata section and 0x20 for the # .ctors/.dtors headers/ends). # CHECK-NEXT: VirtualSize: 0x24 # Check that the weak symbols still are emitted as it was when the test was # written, to make sure the test still actually tests what was intended. # SYMBOL: Symbol { # SYMBOL: Name: foo # SYMBOL-NEXT: Value: 0 # SYMBOL-NEXT: Section: IMAGE_SYM_UNDEFINED (0) # SYMBOL-NEXT: BaseType: Null (0x0) # SYMBOL-NEXT: ComplexType: Null (0x0) # SYMBOL-NEXT: StorageClass: WeakExternal (0x69) # SYMBOL-NEXT: AuxSymbolCount: 1 # SYMBOL-NEXT: AuxWeakExternal { # SYMBOL-NEXT: Linked: .weak.foo.default.main (19) # SYMBOL-NEXT: Search: Alias (0x3) # SYMBOL-NEXT: } # SYMBOL-NEXT: } .text .globl main main: call foo retq # See associative-comdat-mingw.s for the general setup. Here, the leader # symbols are weak, which causes the functions foo and bar to be undefined # weak externals, while the actual leader symbols are named like # .weak.foo.default.main. .section .xdata$foo,"dr" .linkonce discard .long 42 .section .xdata$bar,"dr" .linkonce discard .long 43 .section .text$foo,"xr",discard,foo .weak foo foo: ret .section .text$bar,"xr",discard,bar .weak bar bar: ret