From f21a6470b16b7e0f44d56ec9d90c44fd48e418c5 Mon Sep 17 00:00:00 2001
From: Abdelhakim Qbaich <abdelhakim@qbaich.com>
Date: Sun, 5 Apr 2026 19:27:19 -0400
Subject: [PATCH] Mark max_blen as static constexpr and use in test

---
 .../streamers/oasis/unit_tests/dbOASISReaderTests.cc      | 3 ++-
 src/tl/tl/tlDeflate.h                                     | 8 +++++---
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/plugins/streamers/oasis/unit_tests/dbOASISReaderTests.cc b/src/plugins/streamers/oasis/unit_tests/dbOASISReaderTests.cc
index a577ca093..7f2c11da7 100644
--- a/src/plugins/streamers/oasis/unit_tests/dbOASISReaderTests.cc
+++ b/src/plugins/streamers/oasis/unit_tests/dbOASISReaderTests.cc
@@ -26,6 +26,7 @@
 #include "dbLayoutDiff.h"
 #include "dbTextWriter.h"
 #include "dbTestSupport.h"
+#include "tlDeflate.h"
 #include "tlLog.h"
 #include "tlUnitTest.h"
 #include "tlStream.h"
@@ -706,7 +707,7 @@ TEST(CBlockLargePropertyString)
   unsigned int layer = layout_org.insert_layer (db::LayerProperties (1, 0));
   db::Cell &top = layout_org.cell (layout_org.add_cell ("TOP"));
 
-  std::string large_value (42000, 'a');
+  std::string large_value (tl::InflateFilter::max_blen () + 1, 'a');
 
   db::PropertiesSet ps;
   ps.insert (db::property_names_id (tl::Variant ("blob")), tl::Variant (large_value));
diff --git a/src/tl/tl/tlDeflate.h b/src/tl/tl/tlDeflate.h
index 3fee4ebcd..8c7a2d5fd 100644
--- a/src/tl/tl/tlDeflate.h
+++ b/src/tl/tl/tlDeflate.h
@@ -195,6 +195,8 @@ private:
 class TL_PUBLIC InflateFilter
 {
 public:
+  static constexpr size_t buffer_size = 65536;
+
   /**
    *  @brief Constructor
    *
@@ -218,9 +220,9 @@ public:
   /**
    *  @brief Obtain the maximum number of bytes available for a single get() call
    */
-  size_t max_blen () const
+  static constexpr size_t max_blen ()
   {
-    return sizeof (m_buffer) / 2 - 1;
+    return buffer_size / 2 - 1;
   }
 
   /**
@@ -240,7 +242,7 @@ public:
 private:
   BitStream m_input;
 
-  char m_buffer[65536];
+  char m_buffer[buffer_size];
   unsigned int m_b_insert;
   unsigned int m_b_read;
   bool m_at_end;