ggml : silence UB sanitizer error during iq2_xxs quantization (#0)

ggerganov · ggerganov · commit 1debe72737ea · 2024-05-23T17:25:38.000+03:00
diff --git a/ggml-quants.c b/ggml-quants.c
@@ -12144,7 +12144,7 @@ static void quantize_row_iq2_xxs_impl(const float * restrict x, void * restrict
                     printf("\n");
                     GGML_ASSERT(false);
                 }
-                q2[2*ib+0] |= (grid_index << 8*k);
+                q2[2*ib+0] |= ((uint32_t) grid_index << 8*k);
                 q2[2*ib+1] |= (block_signs[k] << 7*k);
             }
             GGML_ASSERT(scale >= 0);

Original file line number	Diff line number	Diff line change
`@@ -12144,7 +12144,7 @@ static void quantize_row_iq2_xxs_impl(const float * restrict x, void * restrict`
`12144`	`12144`	`printf("\n");`
`12145`	`12145`	`GGML_ASSERT(false);`
`12146`	`12146`	`}`
`12147`		`- q2[2ib+0] \|= (grid_index << 8k);`
	`12147`	`+ q2[2ib+0] \|= ((uint32_t) grid_index << 8k);`
`12148`	`12148`	`q2[2ib+1] \|= (block_signs[k] << 7k);`
`12149`	`12149`	`}`
`12150`	`12150`	`GGML_ASSERT(scale >= 0);`