X-Git-Url: https://wimlib.net/git/?a=blobdiff_plain;f=src%2Fwrite.c;h=b595c875e08e08e80313aa3bd2e363e8577df2d3;hb=ce50e9190bdb770640a53a1a8d612229be65d8e7;hp=c1d56de3001d1a37d166d22ec6daa9ee6dce163e;hpb=c86d5f74e13e5aeff57aff84f7d65264607a29ac;p=wimlib

diff --git a/src/write.c b/src/write.c
index c1d56de3..b595c875 100644
--- a/src/write.c
+++ b/src/write.c
@@ -548,9 +548,9 @@ end_chunk_table(struct write_blobs_ctx *ctx, u64 res_actual_size,
 			hdr.chunk_size = cpu_to_le32(ctx->out_chunk_size);
 			hdr.compression_format = cpu_to_le32(ctx->out_ctype);
 
-			BUILD_BUG_ON(WIMLIB_COMPRESSION_TYPE_XPRESS != 1);
-			BUILD_BUG_ON(WIMLIB_COMPRESSION_TYPE_LZX != 2);
-			BUILD_BUG_ON(WIMLIB_COMPRESSION_TYPE_LZMS != 3);
+			STATIC_ASSERT(WIMLIB_COMPRESSION_TYPE_XPRESS == 1);
+			STATIC_ASSERT(WIMLIB_COMPRESSION_TYPE_LZX == 2);
+			STATIC_ASSERT(WIMLIB_COMPRESSION_TYPE_LZMS == 3);
 
 			ret = full_pwrite(ctx->out_fd, &hdr, sizeof(hdr),
 					  chunk_table_offset - sizeof(hdr));
@@ -769,13 +769,9 @@ write_blob_uncompressed(struct blob_descriptor *blob, struct filedes *out_fd)
 
 	wimlib_assert(out_fd->offset - begin_offset == blob->size);
 
-	if (out_fd->offset < end_offset &&
-	    0 != ftruncate(out_fd->fd, out_fd->offset))
-	{
-		ERROR_WITH_ERRNO("Can't truncate output file to "
-				 "offset %"PRIu64, out_fd->offset);
-		return WIMLIB_ERR_WRITE;
-	}
+	/* We could ftruncate() the file to 'out_fd->offset' here, but there
+	 * isn't much point.  Usually we will only be truncating by a few bytes
+	 * and will just overwrite the data immediately.  */
 
 	blob->out_reshdr.size_in_wim = blob->size;
 	blob->out_reshdr.flags &= ~(WIM_RESHDR_FLAG_COMPRESSED |