From 0ded1d70065266f2b8be2f5d16d85545f199fade Mon Sep 17 00:00:00 2001
From: Mikhail Glukhikh <mikhail.glukhikh@jetbrains.com>
Date: Thu, 23 Jul 2020 09:43:41 +0300
Subject: [PATCH] FirBasedSignatureComposer: generate better error messages

---
 .../kotlin/fir/signaturer/FirBasedSignatureComposer.kt      | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/signaturer/FirBasedSignatureComposer.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/signaturer/FirBasedSignatureComposer.kt
index 0c094fce9e2..6ae3ed9e61c 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/signaturer/FirBasedSignatureComposer.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/signaturer/FirBasedSignatureComposer.kt
@@ -64,7 +64,11 @@ class FirBasedSignatureComposer(private val mangler: FirMangler) : Fir2IrSignatu
     override fun composeSignature(declaration: FirDeclaration): IdSignature? {
         if (declaration is FirAnonymousObject || declaration is FirAnonymousFunction) return null
         val builder = SignatureBuilder()
-        declaration.accept(builder)
+        try {
+            declaration.accept(builder)
+        } catch (t: Throwable) {
+            throw IllegalStateException("Error while composing signature for ${declaration.render()}", t)
+        }
         return when (declaration) {
             is FirRegularClass -> {
                 // TODO: private classes are probably not acceptable here too