From fce5ad1358aa137e305c75d84da95070e3890831 Mon Sep 17 00:00:00 2001
From: Svyatoslav Scherbina <svyatoslav.scherbina@jetbrains.com>
Date: Wed, 20 Apr 2022 15:01:43 +0300
Subject: [PATCH] Native: check return value of clang_saveTranslationUnit

---
 .../kotlin/native/interop/indexer/Utils.kt        | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/kotlin-native/Interop/Indexer/src/main/kotlin/org/jetbrains/kotlin/native/interop/indexer/Utils.kt b/kotlin-native/Interop/Indexer/src/main/kotlin/org/jetbrains/kotlin/native/interop/indexer/Utils.kt
index 65509436e36..726934cc398 100644
--- a/kotlin-native/Interop/Indexer/src/main/kotlin/org/jetbrains/kotlin/native/interop/indexer/Utils.kt
+++ b/kotlin-native/Interop/Indexer/src/main/kotlin/org/jetbrains/kotlin/native/interop/indexer/Utils.kt
@@ -417,7 +417,20 @@ fun Compilation.precompileHeaders(): CompilationWithPCH = withIndex { index ->
 
 internal fun Compilation.withPrecompiledHeader(translationUnit: CXTranslationUnit): CompilationWithPCH {
     val precompiledHeader = Files.createTempFile(null, ".pch").toFile().apply { this.deleteOnExit() }
-    clang_saveTranslationUnit(translationUnit, precompiledHeader.absolutePath, 0)
+    val errorCode = clang_saveTranslationUnit(translationUnit, precompiledHeader.absolutePath, 0)
+    if (errorCode != 0) {
+        error(buildString {
+            appendLine("""
+                clang_saveTranslationUnit failed with $errorCode;
+                output = ${precompiledHeader.absolutePath}
+                output size is ${precompiledHeader.length()}, exists = ${precompiledHeader.exists()}
+                arguments = ${compilerArgs.joinToString(" ")}
+                preamble:
+                """.trimIndent())
+
+            this.appendPreamble(this@withPrecompiledHeader)
+        })
+    }
 
     return CompilationWithPCH(
         this.compilerArgs,