COFF: Ignore debug symbols.

Differential Revision: http://reviews.llvm.org/D10675

llvm-svn: 240487

lld/COFF/InputFiles.cpp

@@ -193,6 +193,8 @@ SymbolBody *ObjectFile::createSymbolBody(COFFSymbolRef Sym, const void *AuxP,
       return nullptr;
     return new (Alloc) DefinedAbsolute(Name, Sym.getValue());
   }
+  if (Sym.getSectionNumber() == llvm::COFF::IMAGE_SYM_DEBUG)
+    return nullptr;
   // TODO: Handle IMAGE_WEAK_EXTERN_SEARCH_ALIAS
   if (Sym.isWeakExternal()) {
     COFFObj->getSymbolName(Sym, Name);

lld/test/COFF/debug.test

@@ -0,0 +1,38 @@
+# RUN: yaml2obj %s > %t.obj
+# RUN: lld -flavor link2 /out:%t.exe /entry:main /subsystem:console %t.obj
+
+---
+header:
+  Machine:         IMAGE_FILE_MACHINE_AMD64
+  Characteristics: []
+sections:
+  - Name:            .text
+    Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
+    Alignment:       4
+    SectionData:     B82A000000C3
+symbols:
+  - Name:            .text
+    Value:           0
+    SectionNumber:   1
+    SimpleType:      IMAGE_SYM_TYPE_NULL
+    ComplexType:     IMAGE_SYM_DTYPE_NULL
+    StorageClass:    IMAGE_SYM_CLASS_STATIC
+    SectionDefinition:
+      Length:          6
+      NumberOfRelocations: 0
+      NumberOfLinenumbers: 0
+      CheckSum:        0
+      Number:          0
+  - Name:            main
+    Value:           0
+    SectionNumber:   1
+    SimpleType:      IMAGE_SYM_TYPE_NULL
+    ComplexType:     IMAGE_SYM_DTYPE_NULL
+    StorageClass:    IMAGE_SYM_CLASS_EXTERNAL
+  - Name:            debug
+    Value:           0
+    SectionNumber:   -2
+    SimpleType:      IMAGE_SYM_TYPE_NULL
+    ComplexType:     IMAGE_SYM_DTYPE_NULL
+    StorageClass:    IMAGE_SYM_CLASS_EXTERNAL
+...