fuzzer: added low address compression test

is expected to work on linux+gcc only.

1 files changed, 5 insertions, 4 deletions

diff --git a/lib/lz4hc.c b/lib/lz4hc.c
index cface811..79cf651b 100644
--- a/lib/lz4hc.c
+++ b/lib/lz4hc.c
@@ -856,16 +856,17 @@ int LZ4_resetStreamStateHC(void* state, char* inputBuffer)
     LZ4HC_CCtx_internal *ctx = &((LZ4_streamHC_t*)state)->internal_donotuse;
     if ((((size_t)state) & (sizeof(void*)-1)) != 0) return 1;   /* Error : pointer is not aligned for pointer (32 or 64 bits) */
     LZ4HC_init(ctx, (const BYTE*)inputBuffer);
-    ctx->inputBuffer = (BYTE*)inputBuffer;
+    ctx->inputBuffer = inputBuffer;
     return 0;
 }
 
-void* LZ4_createHC (char* inputBuffer)
+void* LZ4_createHC (const char* inputBuffer)
 {
     LZ4_streamHC_t* hc4 = (LZ4_streamHC_t*)ALLOCATOR(1, sizeof(LZ4_streamHC_t));
     if (hc4 == NULL) return NULL;   /* not enough memory */
     LZ4HC_init (&hc4->internal_donotuse, (const BYTE*)inputBuffer);
-    hc4->internal_donotuse.inputBuffer = (BYTE*)inputBuffer;
+    assert(sizeof(size_t) == sizeof(void*));
+    hc4->internal_donotuse.inputBuffer = (void*)(size_t)inputBuffer;   /* ugly hack, circumvent -Wcast-qual */
     return hc4;
 }
 
@@ -889,5 +890,5 @@ char* LZ4_slideInputBufferHC(void* LZ4HC_Data)
 {
     LZ4HC_CCtx_internal* const hc4 = &((LZ4_streamHC_t*)LZ4HC_Data)->internal_donotuse;
     int const dictSize = LZ4_saveDictHC((LZ4_streamHC_t*)LZ4HC_Data, (char*)(hc4->inputBuffer), 64 KB);
-    return (char*)(hc4->inputBuffer + dictSize);
+    return (char*)(hc4->inputBuffer) + dictSize;
 }