Index: ELF/LinkerScript.cpp
===================================================================
--- ELF/LinkerScript.cpp
+++ ELF/LinkerScript.cpp
@@ -89,6 +89,21 @@
   return getInteger(Tok);
 }
 
+static uint64_t parseTernary(ArrayRef<StringRef> &Tokens, uint64_t Cond,
+                             uint64_t Dot) {
+  next(Tokens);
+
+  uint64_t V1 = parsePrimary(Tokens, Dot);
+  V1 = parseExpr(V1, 0, Tokens, Dot);
+  if (Tokens.empty() || next(Tokens) != ":")
+    error("incomplete ternary operator expression");
+
+  uint64_t V2 = parsePrimary(Tokens, Dot);
+  V2 = parseExpr(V2, 0, Tokens, Dot);
+
+  return Cond ? V1 : V2;
+}
+
 static uint64_t apply(StringRef Op, uint64_t L, uint64_t R) {
   if (Op == "+")
     return L + R;
@@ -116,6 +131,9 @@
   while (!Tokens.empty()) {
     // Read an operator and an expression.
     StringRef Op1 = Tokens.front();
+    if (Op1 == "?")
+      return parseTernary(Tokens, Lhs, Dot);
+
     if (precedence(Op1) < MinPrec)
       return Lhs;
     next(Tokens);
Index: test/ELF/linkerscript-locationcounter.s
===================================================================
--- test/ELF/linkerscript-locationcounter.s
+++ test/ELF/linkerscript-locationcounter.s
@@ -14,6 +14,10 @@
 # RUN:  .bracket : { *(.bracket) } \
 # RUN:  . = 0x17000 & 0x15000; \
 # RUN:  .and : { *(.and) } \
+# RUN:  . = 0x1 ? 0x16000 : 0x999999; \
+# RUN:  .ternary1 : { *(.ternary1) } \
+# RUN:  . = 0x0 ? 0x999999 : 0x17000; \
+# RUN:  .ternary2 : { *(.ternary2) } \
 # RUN: }" > %t.script
 # RUN: ld.lld %t --script %t.script -o %t2
 # RUN: llvm-readobj -s %t2 | FileCheck %s
@@ -108,6 +112,36 @@
 # CHECK-NEXT:   AddressAlignment:
 # CHECK-NEXT:   EntrySize:
 # CHECK-NEXT: }
+# CHECK-NEXT: Section {
+# CHECK-NEXT:   Index:
+# CHECK-NEXT:   Name: .ternary1
+# CHECK-NEXT:   Type: SHT_PROGBITS
+# CHECK-NEXT:   Flags [
+# CHECK-NEXT:     SHF_ALLOC
+# CHECK-NEXT:   ]
+# CHECK-NEXT:   Address: 0x16000
+# CHECK-NEXT:   Offset:
+# CHECK-NEXT:   Size:
+# CHECK-NEXT:   Link:
+# CHECK-NEXT:   Info:
+# CHECK-NEXT:   AddressAlignment:
+# CHECK-NEXT:   EntrySize:
+# CHECK-NEXT: }
+# CHECK-NEXT: Section {
+# CHECK-NEXT:   Index:
+# CHECK-NEXT:   Name: .ternary2
+# CHECK-NEXT:   Type: SHT_PROGBITS
+# CHECK-NEXT:   Flags [
+# CHECK-NEXT:     SHF_ALLOC
+# CHECK-NEXT:   ]
+# CHECK-NEXT:   Address: 0x17000
+# CHECK-NEXT:   Offset:
+# CHECK-NEXT:   Size:
+# CHECK-NEXT:   Link:
+# CHECK-NEXT:   Info:
+# CHECK-NEXT:   AddressAlignment:
+# CHECK-NEXT:   EntrySize:
+# CHECK-NEXT: }
 
 ## Mailformed number error.
 # RUN: echo "SECTIONS { \
@@ -149,6 +183,14 @@
 # RUN:  FileCheck --check-prefix=DIVZERO %s
 # DIVZERO: division by zero
 
+## Broken ternary operator expression.
+# RUN: echo "SECTIONS { \
+# RUN:  . = 0x1 ? 0x2; \
+# RUN: }" > %t.script
+# RUN: not ld.lld %t --script %t.script -o %t2 2>&1 | \
+# RUN:  FileCheck --check-prefix=TERNERR %s
+# TERNERR: incomplete ternary operator expression
+
 .globl _start;
 _start:
 nop
@@ -170,3 +212,9 @@
 
 .section .and, "a"
 .quad 0
+
+.section .ternary1, "a"
+.quad 0
+
+.section .ternary2, "a"
+.quad 0