From 4504b05b763b5df1be6f67944b179fca6bd001bb Mon Sep 17 00:00:00 2001
From: Kampfkarren <boynedmaster@gmail.com>
Date: Tue, 26 Jul 2022 21:30:19 -0700
Subject: [PATCH] Pre-allocate registers, getting better errors

---
 Compiler/src/Compiler.cpp | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/Compiler/src/Compiler.cpp b/Compiler/src/Compiler.cpp
index e8b8db4a..52b841e9 100644
--- a/Compiler/src/Compiler.cpp
+++ b/Compiler/src/Compiler.cpp
@@ -1529,11 +1529,10 @@ struct Compiler
         // bytecode.emitABC(LOP_LOADK, target, formatStringIndex, 0);
         emitLoadK(target, formatStringIndex);
 
-        for (AstExpr* expression : expr->expressions)
-        {
-            uint8_t reg = allocReg(expression, 1);
-            compileExpr(expression, reg, targetTemp);
-        }
+        uint8_t baseExprReg = allocReg(expr, expr->expressions.size);
+
+        for (size_t index = 0; index < expr->expressions.size; ++index)
+            compileExpr(expr->expressions.data[index], baseExprReg + index, targetTemp);
 
         BytecodeBuilder::StringRef formatMethod = sref(AstName("format"));