Check the return of getInteger.

llvm-svn: 281608

lld/ELF/LinkerScript.cpp

@@ -1307,7 +1307,8 @@ Expr ScriptParser::readPrimary() {
     next();
     expect(",");
     uint64_t Val;
-    next().getAsInteger(0, Val);
+    if (next().getAsInteger(0, Val))
+      setError("integer expected");
     expect(")");
     return [=](uint64_t Dot) { return Val; };
   }

lld/test/ELF/linkerscript/segment-start.s

@@ -20,3 +20,8 @@
 .quad foobar2
 .quad foobar3
 .quad foobar4
+
+// RUN: echo "SECTIONS { . = SEGMENT_START(\"foobar\", foo); }" > %t.script
+// RUN: not ld.lld %t.o %t.script -shared -o %t2.so 2>&1 \
+// RUN: | FileCheck --check-prefix=ERR %s
+// ERR: integer expected