From 85830386402e2050a3dc97778b3a28af2be16e90 Mon Sep 17 00:00:00 2001
From: Michael Dusan <michael.dusan@gmail.com>
Date: Sat, 15 Feb 2020 05:14:31 -0500
Subject: [PATCH] =?UTF-8?q?translate-c:=20change=20OutOfMemory=20=E2=86=92?=
 =?UTF-8?q?=20ASTUnitFailure?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- return a better error when no diagnostics are available
---
 src-self-hosted/stage1.zig      | 2 ++
 src-self-hosted/translate_c.zig | 2 +-
 src/error.cpp                   | 1 +
 src/userland.h                  | 1 +
 4 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src-self-hosted/stage1.zig b/src-self-hosted/stage1.zig
index 961b95d481..ffa0754bb5 100644
--- a/src-self-hosted/stage1.zig
+++ b/src-self-hosted/stage1.zig
@@ -92,6 +92,7 @@ const Error = extern enum {
     InvalidCpuFeatures,
     InvalidLlvmCpuFeaturesFormat,
     UnknownApplicationBinaryInterface,
+    ASTUnitFailure,
 };
 
 const FILE = std.c.FILE;
@@ -114,6 +115,7 @@ export fn stage2_translate_c(
             out_errors_len.* = errors.len;
             return Error.CCompileErrors;
         },
+        error.ASTUnitFailure => return Error.ASTUnitFailure,
         error.OutOfMemory => return Error.OutOfMemory,
     };
     return Error.None;
diff --git a/src-self-hosted/translate_c.zig b/src-self-hosted/translate_c.zig
index 0c7b3868e2..cd8d0b9d63 100644
--- a/src-self-hosted/translate_c.zig
+++ b/src-self-hosted/translate_c.zig
@@ -264,7 +264,7 @@ pub fn translate(
         &errors.len,
         resources_path,
     ) orelse {
-        if (errors.len == 0) return error.OutOfMemory;
+        if (errors.len == 0) return error.ASTUnitFailure;
         return error.SemanticAnalyzeFail;
     };
     defer ZigClangASTUnit_delete(ast_unit);
diff --git a/src/error.cpp b/src/error.cpp
index 5bf1667db9..08575d15ec 100644
--- a/src/error.cpp
+++ b/src/error.cpp
@@ -64,6 +64,7 @@ const char *err_str(Error err) {
         case ErrorInvalidCpuFeatures: return "invalid CPU features";
         case ErrorInvalidLlvmCpuFeaturesFormat: return "invalid LLVM CPU features format";
         case ErrorUnknownApplicationBinaryInterface: return "unknown application binary interface";
+        case ErrorASTUnitFailure: return "ASTUnit failure";
     }
     return "(invalid error)";
 }
diff --git a/src/userland.h b/src/userland.h
index 6b16d2338e..a59f6b7da8 100644
--- a/src/userland.h
+++ b/src/userland.h
@@ -84,6 +84,7 @@ enum Error {
     ErrorInvalidCpuFeatures,
     ErrorInvalidLlvmCpuFeaturesFormat,
     ErrorUnknownApplicationBinaryInterface,
+    ErrorASTUnitFailure,
 };
 
 // ABI warning