diff --git a/lld/ELF/Arch/ARM.cpp b/lld/ELF/Arch/ARM.cpp
--- a/lld/ELF/Arch/ARM.cpp
+++ b/lld/ELF/Arch/ARM.cpp
@@ -60,7 +60,7 @@
   GotPltEntrySize = 4;
   PltEntrySize = 16;
   PltHeaderSize = 32;
-  TrapInstr = {0xd4, 0xd4, 0xd4, 0xd4};
+  TrapInstr = {{0xd4, 0xd4, 0xd4, 0xd4}};
   NeedsThunks = true;
 }
 
diff --git a/lld/ELF/Arch/MSP430.cpp b/lld/ELF/Arch/MSP430.cpp
--- a/lld/ELF/Arch/MSP430.cpp
+++ b/lld/ELF/Arch/MSP430.cpp
@@ -41,7 +41,7 @@
 
 MSP430::MSP430() {
   // mov.b #0, r3
-  TrapInstr = {0x43, 0x43, 0x43, 0x43};
+  TrapInstr = {{0x43, 0x43, 0x43, 0x43}};
 }
 
 RelExpr MSP430::getRelExpr(RelType Type, const Symbol &S,
diff --git a/lld/ELF/Arch/X86.cpp b/lld/ELF/Arch/X86.cpp
--- a/lld/ELF/Arch/X86.cpp
+++ b/lld/ELF/Arch/X86.cpp
@@ -59,7 +59,7 @@
   GotPltEntrySize = 4;
   PltEntrySize = 16;
   PltHeaderSize = 16;
-  TrapInstr = {0xcc, 0xcc, 0xcc, 0xcc}; // 0xcc = INT3
+  TrapInstr = {{0xcc, 0xcc, 0xcc, 0xcc}}; // 0xcc = INT3
 
   // Align to the non-PAE large page size (known as a superpage or huge page).
   // FreeBSD automatically promotes large, superpage-aligned allocations.
diff --git a/lld/ELF/Arch/X86_64.cpp b/lld/ELF/Arch/X86_64.cpp
--- a/lld/ELF/Arch/X86_64.cpp
+++ b/lld/ELF/Arch/X86_64.cpp
@@ -62,7 +62,7 @@
   GotPltEntrySize = 8;
   PltEntrySize = 16;
   PltHeaderSize = 16;
-  TrapInstr = {0xcc, 0xcc, 0xcc, 0xcc}; // 0xcc = INT3
+  TrapInstr = {{0xcc, 0xcc, 0xcc, 0xcc}}; // 0xcc = INT3
 
   // Align to the large page size (known as a superpage or huge page).
   // FreeBSD automatically promotes large, superpage-aligned allocations.
diff --git a/lld/ELF/OutputSections.cpp b/lld/ELF/OutputSections.cpp
--- a/lld/ELF/OutputSections.cpp
+++ b/lld/ELF/OutputSections.cpp
@@ -409,7 +409,7 @@
     return *Filler;
   if (Flags & SHF_EXECINSTR)
     return Target->TrapInstr;
-  return {0, 0, 0, 0};
+  return {{0, 0, 0, 0}};
 }
 
 template void OutputSection::writeHeaderTo<ELF32LE>(ELF32LE::Shdr *Shdr);