From c17b711751371c4d7c5a7c1b0995747f7e95fddb Mon Sep 17 00:00:00 2001
From: UnexomWid <uw@exom.dev>
Date: Tue, 8 Dec 2020 10:50:48 +0200
Subject: [PATCH] [FIX] Rare bug caused by conditional stack not popping (#34)

---
 package-lock.json         | 2 +-
 src/compiler/compiler.cxx | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index 0b748cf..3fb43c2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1195,4 +1195,4 @@
       }
     }
   }
-}
+}
\ No newline at end of file
diff --git a/src/compiler/compiler.cxx b/src/compiler/compiler.cxx
index 3479bc6..eb6211b 100644
--- a/src/compiler/compiler.cxx
+++ b/src/compiler/compiler.cxx
@@ -1393,7 +1393,7 @@ BinaryData compileBytes(const uint8_t* input, size_t inputSize, const char* wd,
                     output.reset(newOutput);
                 }
 
-                // This is for the component body, as it requires the content length.
+                // The output size before writing the conditional end.
                 size_t backup = outputSize;
 
                 LOG_DEBUG("Writing template body end as BDP832 pair %zu -> %zu...", start - input, end - input);
@@ -1404,12 +1404,12 @@ BinaryData compileBytes(const uint8_t* input, size_t inputSize, const char* wd,
                 switch(templateStack.top().type) {
                     case TemplateType::CONDITIONAL:
                     case TemplateType::INVERTED_CONDITIONAL:
-                        // Only write the end index, as there is no else (conditional) template.
-                        BDP::lengthToBytes(output.get() + templateStack.top().bodyIndex - 2 * OSH_FORMAT, outputSize - templateStack.top().bodyIndex, OSH_FORMAT);
+                        BDP::lengthToBytes(output.get() + templateStack.top().bodyIndex - 2 * OSH_FORMAT, backup - templateStack.top().bodyIndex, OSH_FORMAT);
+                        BDP::lengthToBytes(output.get() + templateStack.top().bodyIndex - OSH_FORMAT, outputSize - backup, OSH_FORMAT); // Jumps at the end.
                         break;
                     case TemplateType::ELSE_CONDITIONAL:
                     case TemplateType::ELSE: {
-                        size_t currentEndIndex = outputSize - Global::BDP832->VALUE_LENGTH_BYTE_SIZE - bodyEndMarkerLength - Global::BDP832->NAME_LENGTH_BYTE_SIZE; // For the end index. The true end index will always be fixed.
+                        size_t currentEndIndex = backup; // For the end index. The true end index will always be fixed.
 
                         bool searching = true;