From 26f7249898ec1819559173904c72dc45839d4b4e Mon Sep 17 00:00:00 2001
From: wuggy <ownedbywuigi@gmail.com>
Date: Thu, 16 Apr 2026 19:42:31 -0400
Subject: [PATCH] i HATE ZLIB PART 2

---
 modules/zlib/src/crc32_stub.c | 29 +++++++++++++++++++++++++++++
 modules/zlib/src/moz.build    |  1 +
 2 files changed, 30 insertions(+)
 create mode 100644 modules/zlib/src/crc32_stub.c

diff --git a/modules/zlib/src/crc32_stub.c b/modules/zlib/src/crc32_stub.c
new file mode 100644
index 0000000000..d8d867642d
--- /dev/null
+++ b/modules/zlib/src/crc32_stub.c
@@ -0,0 +1,29 @@
+// Minimal CRC folding stubs for builds without CRC SIMD support.
+
+#include "zutil.h"
+#include "crc32.h"
+
+// The folded CRC state type is declared in crc32.h as crc32_fold (or similar).
+// We don't use any SIMD here; we just fall back to scalar crc32.
+
+void crc_fold_init(crc32_fold *crc)
+{
+    // Initialize to standard CRC-32 initial value.
+    crc->crc = 0xffffffffu;
+}
+
+void crc_fold_copy(crc32_fold *crc,
+                   unsigned char *dst,
+                   const unsigned char *src,
+                   long len)
+{
+    // Simple scalar copy + CRC update.
+    memcpy(dst, src, (size_t)len);
+    crc->crc = crc32(crc->crc, src, (uInt)len);
+}
+
+uint32_t crc_fold_512to32(crc32_fold *crc)
+{
+    // Finalize CRC (invert bits as usual).
+    return crc->crc ^ 0xffffffffu;
+}
diff --git a/modules/zlib/src/moz.build b/modules/zlib/src/moz.build
index 72a2c6a783..2634a3bd9f 100644
--- a/modules/zlib/src/moz.build
+++ b/modules/zlib/src/moz.build
@@ -38,6 +38,7 @@ if CONFIG['INTEL_ARCHITECTURE']:
         DEFINES['INFLATE_CHUNK_SIMD_SSE2'] = False
         DEFINES['CRC32_SIMD_SSE42_PCLMUL'] = False
         SOURCES += [
+            'crc32_stub.c',
             'simd_stub.c',
         ]
     else: