[mips] Add an assert in getTargetStreamer()

Check if the TargetStreamer can be accessed.

Differential Revision: https://reviews.llvm.org/D71477

1 files changed, 2 insertions, 0 deletions

diff --git a/llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp b/llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
index 639ee2df96a..34862bdadb9 100644
--- a/llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
+++ b/llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
@@ -134,6 +134,8 @@ namespace {
 
 class MipsAsmParser : public MCTargetAsmParser {
   MipsTargetStreamer &getTargetStreamer() {
+    assert(getParser().getStreamer().getTargetStreamer() &&
+           "do not have a target streamer");
     MCTargetStreamer &TS = *getParser().getStreamer().getTargetStreamer();
     return static_cast<MipsTargetStreamer &>(TS);
   }