[llvm] llvm-mc: Error on MCSubtargetInfo construction failure (PR #159226)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-mc

Author: Matt Arsenault (arsenm)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/159226.diff


1 Files Affected:

- (modified) llvm/tools/llvm-mc/llvm-mc.cpp (+4-1) 


``````````diff
diff --git a/llvm/tools/llvm-mc/llvm-mc.cpp b/llvm/tools/llvm-mc/llvm-mc.cpp
index 136cd69526a3c..224fd80f6a6d3 100644
--- a/llvm/tools/llvm-mc/llvm-mc.cpp
+++ b/llvm/tools/llvm-mc/llvm-mc.cpp
@@ -469,7 +469,10 @@ int main(int argc, char **argv) {
 
   std::unique_ptr<MCSubtargetInfo> STI(
       TheTarget->createMCSubtargetInfo(TheTriple, MCPU, FeaturesStr));
-  assert(STI && "Unable to create subtarget info!");
+  if (!STI) {
+    WithColor::error(errs(), ProgName) << "unable to create subtarget info\n";
+    return 1;
+  }
 
   // FIXME: This is not pretty. MCContext has a ptr to MCObjectFileInfo and
   // MCObjectFileInfo needs a MCContext reference in order to initialize itself.

``````````

</details>


https://github.com/llvm/llvm-project/pull/159226