From 06e77303a537c7448502c9418c4a30f88c7b41bc Mon Sep 17 00:00:00 2001
From: Svyatoslav Scherbina <svyatoslav.scherbina@jetbrains.com>
Date: Wed, 11 Dec 2019 12:18:54 +0300
Subject: [PATCH] Make CBridgeGen symbol names more unique

---
 .../kotlin/backend/konan/lower/InteropLowering.kt   | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/InteropLowering.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/InteropLowering.kt
index f0394aef758..ca90ad21813 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/InteropLowering.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/InteropLowering.kt
@@ -48,6 +48,7 @@ import org.jetbrains.kotlin.ir.visitors.transformChildrenVoid
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameSafe
+import org.jetbrains.kotlin.resolve.descriptorUtil.module
 
 internal abstract class BaseInteropIrTransformer(private val context: Context) : IrBuildingTransformer(context) {
 
@@ -61,6 +62,16 @@ internal abstract class BaseInteropIrTransformer(private val context: Context) :
             builder.getCompilerMessageLocation()
         }
 
+        val uniqueModuleName = irFile.packageFragmentDescriptor.module.name.asString()
+                .let { it.substring(1, it.lastIndex) }
+        val uniquePrefix = buildString {
+            append('_')
+            uniqueModuleName.toByteArray().joinTo(this, "") {
+                (0xFF and it.toInt()).toString(16).padStart(2, '0')
+            }
+            append('_')
+        }
+
         return object : KotlinStubs {
             override val irBuiltIns get() = context.irBuiltIns
             override val symbols get() = context.ir.symbols
@@ -74,7 +85,7 @@ internal abstract class BaseInteropIrTransformer(private val context: Context) :
             }
 
             override fun getUniqueCName(prefix: String) =
-                    "_${context.cStubsManager.getUniqueName(prefix)}" // Ok in absence of separate compilation
+                    "$uniquePrefix${context.cStubsManager.getUniqueName(prefix)}"
 
             override fun getUniqueKotlinFunctionReferenceClassName(prefix: String) =
                     "$prefix${context.functionReferenceCount++}"