[SYCLomatic] Fix potential multiply overflow issue (#697)

tomflinda · web-flow · commit 6cd26f2a260c · 2023-03-03T10:25:48.000+08:00
Signed-off-by: chenwei.sun &lt;chenwei.sun@intel.com&gt;
diff --git a/clang/runtime/dpct-rt/include/util.hpp.inc b/clang/runtime/dpct-rt/include/util.hpp.inc
@@ -110,7 +110,7 @@ inline void matrix_mem_copy(void *to_ptr, const void *from_ptr, int to_ld,
   }
 
   if (to_ld == from_ld) {
-    size_t cpoy_size = elem_size * ((cols - 1) * to_ld + rows);
+    size_t cpoy_size = elem_size * ((cols - 1) * (size_t)to_ld + rows);
     if (async)
       detail::dpct_memcpy(queue, (void *)to_ptr, (void *)from_ptr,
                           cpoy_size, direction);
diff --git a/clang/test/dpct/helper_files_ref/include/util.hpp b/clang/test/dpct/helper_files_ref/include/util.hpp
@@ -56,7 +56,7 @@ inline void matrix_mem_copy(void *to_ptr, const void *from_ptr, int to_ld,
   }
 
   if (to_ld == from_ld) {
-    size_t cpoy_size = elem_size * ((cols - 1) * to_ld + rows);
+    size_t cpoy_size = elem_size * ((cols - 1) * (size_t)to_ld + rows);
     if (async)
       detail::dpct_memcpy(queue, (void *)to_ptr, (void *)from_ptr,
                           cpoy_size, direction);

Original file line number	Diff line number	Diff line change
`@@ -110,7 +110,7 @@ inline void matrix_mem_copy(void to_ptr, const void from_ptr, int to_ld,`
`110`	`110`	`}`
`111`	`111`
`112`	`112`	`if (to_ld == from_ld) {`
`113`		`- size_t cpoy_size = elem_size * ((cols - 1) * to_ld + rows);`
	`113`	`+ size_t cpoy_size = elem_size * ((cols - 1) * (size_t)to_ld + rows);`
`114`	`114`	`if (async)`
`115`	`115`	`detail::dpct_memcpy(queue, (void )to_ptr, (void )from_ptr,`
`116`	`116`	`cpoy_size, direction);`
Original file line number	Diff line number	Diff line change
`@@ -56,7 +56,7 @@ inline void matrix_mem_copy(void to_ptr, const void from_ptr, int to_ld,`
`56`	`56`	`}`
`57`	`57`
`58`	`58`	`if (to_ld == from_ld) {`
`59`		`- size_t cpoy_size = elem_size * ((cols - 1) * to_ld + rows);`
	`59`	`+ size_t cpoy_size = elem_size * ((cols - 1) * (size_t)to_ld + rows);`
`60`	`60`	`if (async)`
`61`	`61`	`detail::dpct_memcpy(queue, (void )to_ptr, (void )from_ptr,`
`62`	`62`	`cpoy_size, direction);`