Index: lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
===================================================================
--- lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
+++ lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
@@ -121,6 +121,8 @@
 
   static unsigned RelocAddend64(const ELFRelocation &rel);
 
+  bool IsRela() { return (reloc.is<ELFRela *>()); }
+
 private:
   typedef llvm::PointerUnion<ELFRel *, ELFRela *> RelocUnion;
 
@@ -2597,25 +2599,46 @@
   }
 
   for (unsigned i = 0; i < num_relocations; ++i) {
-    if (!rel.Parse(rel_data, &offset))
+    if (!rel.Parse(rel_data, &offset)) {
+      GetModule()->ReportError(".rel%s[%d] failed to parse relocation",
+                               rel_section->GetName().AsCString(), i);
       break;
-
+    }
     Symbol *symbol = nullptr;
 
     if (hdr->Is32Bit()) {
       switch (reloc_type(rel)) {
       case R_386_32:
+        symbol = symtab->FindSymbolByID(reloc_symbol(rel));
+        if (symbol) {
+          addr_t f_offset =
+              rel_section->GetFileOffset() + ELFRelocation::RelocOffset32(rel);
+          DataBufferSP &data_buffer_sp = debug_data.GetSharedDataBuffer();
+          // ObjectFileELF creates a WritableDataBuffer in CreateInstance.
+          WritableDataBuffer *data_buffer =
+              llvm::cast<WritableDataBuffer>(data_buffer_sp.get());
+          uint32_t *dst = reinterpret_cast<uint32_t *>(
+              data_buffer->GetBytes() + f_offset);
+
+          addr_t value = symbol->GetAddressRef().GetFileAddress();
+          if (rel.IsRela()) {
+            value += ELFRelocation::RelocAddend32(rel);
+          } else {
+            value += *dst;
+          }
+          *dst = value;
+        } else {
+          GetModule()->ReportError(".rel%s[%u] unknown symbol id: %d",
+                                   rel_section->GetName().AsCString(), i,
+                                   reloc_symbol(rel));
+        }
+        break;
       case R_386_PC32:
       default:
-        // FIXME: This asserts with this input:
-        //
-        // foo.cpp
-        // int main(int argc, char **argv) { return 0; }
-        //
-        // clang++.exe --target=i686-unknown-linux-gnu -g -c foo.cpp -o foo.o
-        //
-        // and running this on the foo.o module.
-        assert(false && "unexpected relocation type");
+        GetModule()->ReportError("unsupported 32-bit relocation:"
+                                 " .rel%s[%u], type %u",
+                                 rel_section->GetName().AsCString(), i,
+                                 reloc_type(rel));
       }
     } else {
       switch (reloc_type(rel)) {
Index: lldb/test/Shell/ObjectFile/ELF/i386-relocations.yaml
===================================================================
--- /dev/null
+++ lldb/test/Shell/ObjectFile/ELF/i386-relocations.yaml
@@ -0,0 +1,57 @@
+# RUN: yaml2obj %s -o %t
+# RUN: lldb-test object-file --contents %t | FileCheck %s
+#
+# CHECK-LABEL:  Name: .debug_info
+# CHECK:        Data: (
+# CHECK-NEXT:     0000: 22222222
+#
+# CHECK-LABEL:  Name: .debug_lines
+# CHECK:        Data: (
+# CHECK-NEXT:     0000: 33333333
+--- !ELF
+FileHeader:
+  Class:           ELFCLASS32
+  Data:            ELFDATA2LSB
+  Type:            ET_REL
+  Machine:         EM_386
+Sections:
+  - Name:            .data
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_WRITE, SHF_ALLOC ]
+    AddressAlign:    0x20
+  - Name:            .debug_info
+    Type:            SHT_PROGBITS
+    AddressAlign:    0x1
+    Content:         11111111
+  - Name:            .debug_lines
+    Type:            SHT_PROGBITS
+    AddressAlign:    0x1
+    Content:         99999999
+  - Name:            .rel.debug_info
+    Type:            SHT_REL
+    Flags:           [ SHF_INFO_LINK ]
+    Link:            .symtab
+    AddressAlign:    0x0
+    Info:            .debug_info
+    Relocations:
+      - Offset:          0x0
+        Symbol:          var
+        Type:            R_386_32
+  - Name:            .rela.debug_lines
+    Type:            SHT_RELA
+    Link:            .symtab
+    AddressAlign:    0x4
+    Info:            .debug_lines
+    Relocations:
+      - Offset:          0x0
+        Addend:          0x22222222
+        Symbol:          var
+        Type:            R_386_32
+Symbols:
+  - Name:            var
+    Type:            STT_OBJECT
+    Section:         .data
+    Binding:         STB_GLOBAL
+    Value:           0x11111111
+    Size:            0x5
+...