From: Lasse Collin <lasse.collin@tukaani.org>
Date: Thu, 3 Apr 2025 11:34:30 +0000 (+0300)
Subject: liblzma: Add assertions to lzma_bufcpy()
X-Git-Tag: v5.8.1~9
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b9d168eee4fb6393b4fe207c0aeb5faee316ca1a;p=thirdparty%2Fxz.git

liblzma: Add assertions to lzma_bufcpy()
---

diff --git a/src/liblzma/common/common.c b/src/liblzma/common/common.c
index fa95acf2..6e031a56 100644
--- a/src/liblzma/common/common.c
+++ b/src/liblzma/common/common.c
@@ -96,6 +96,12 @@ lzma_bufcpy(const uint8_t *restrict in, size_t *restrict in_pos,
 		size_t in_size, uint8_t *restrict out,
 		size_t *restrict out_pos, size_t out_size)
 {
+	assert(in != NULL || *in_pos == in_size);
+	assert(out != NULL || *out_pos == out_size);
+
+	assert(*in_pos <= in_size);
+	assert(*out_pos <= out_size);
+
 	const size_t in_avail = in_size - *in_pos;
 	const size_t out_avail = out_size - *out_pos;
 	const size_t copy_size = my_min(in_avail, out_avail);