From 9158d791266dce182b57529fc6e578a88a9f0f80 Mon Sep 17 00:00:00 2001
From: WerWolv <werwolv98@gmail.com>
Date: Sat, 27 Nov 2021 14:02:14 +0100
Subject: [PATCH] patterns: Don't display strings with zero length. Fixes crash

---
 .../include/hex/pattern_language/pattern_data.hpp        | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/plugins/libimhex/include/hex/pattern_language/pattern_data.hpp b/plugins/libimhex/include/hex/pattern_language/pattern_data.hpp
index 94182db76..b10fe02f0 100644
--- a/plugins/libimhex/include/hex/pattern_language/pattern_data.hpp
+++ b/plugins/libimhex/include/hex/pattern_language/pattern_data.hpp
@@ -37,7 +37,7 @@ namespace hex::pl {
                     result += static_cast<char>(*c);
             }
 
-            if (*(data + size - 1) == '\x00')
+            if (size != 0 && *(data + size - 1) == '\x00')
                 result.pop_back();
 
             return result;
@@ -638,6 +638,10 @@ namespace hex::pl {
 
         void createEntry(prv::Provider* &provider) override {
             auto size = std::min<size_t>(this->getSize(), 0x7F);
+
+            if (size == 0)
+                return;
+
             std::string buffer(size, 0x00);
 
             provider->read(this->getOffset(), buffer.data(), size);
@@ -679,6 +683,9 @@ namespace hex::pl {
         void createEntry(prv::Provider* &provider) override {
             auto size = std::min<size_t>(this->getSize(), 0x100);
 
+            if (size == 0)
+                return;
+
             std::u16string buffer(this->getSize()/sizeof(char16_t), 0x00);
             provider->read(this->getOffset(), buffer.data(), size);