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-rw-r--r--lld/COFF/InputFiles.cpp7
-rw-r--r--lld/test/COFF/pending-comdat.s21
2 files changed, 28 insertions, 0 deletions
diff --git a/lld/COFF/InputFiles.cpp b/lld/COFF/InputFiles.cpp
index 2788f3b2f71..2b3e65fae04 100644
--- a/lld/COFF/InputFiles.cpp
+++ b/lld/COFF/InputFiles.cpp
@@ -281,6 +281,13 @@ void ObjFile::initializeSymbols() {
if (auto *Def = Sym.getSectionDefinition())
if (Def->Selection == IMAGE_COMDAT_SELECT_ASSOCIATIVE)
readAssociativeDefinition(Sym, Def);
+ if (SparseChunks[Sym.getSectionNumber()] == PendingComdat) {
+ StringRef Name;
+ COFFObj->getSymbolName(Sym, Name);
+ log("comdat section " + Name +
+ " without leader and unassociated, discarding");
+ continue;
+ }
Symbols[I] = createRegular(Sym);
}
diff --git a/lld/test/COFF/pending-comdat.s b/lld/test/COFF/pending-comdat.s
new file mode 100644
index 00000000000..b10dce1f1ea
--- /dev/null
+++ b/lld/test/COFF/pending-comdat.s
@@ -0,0 +1,21 @@
+# REQUIRES: x86
+
+# RUN: llvm-mc -triple=x86_64-windows-gnu %s -filetype=obj -o %t.obj
+
+# RUN: not lld-link -lldmingw -out:%t.exe -entry:main -subsystem:console %t.obj 2>&1 | FileCheck %s
+
+# CHECK: error: undefined symbol: other
+
+# Check that the comdat section without a symbol isn't left pending once we iterate symbols
+# to print source of the undefined symbol.
+
+ .text
+ .globl main
+main:
+ call other
+ ret
+
+ .section .data$pending,"w"
+ .linkonce discard
+.Llocal:
+ .byte 0
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