fix crash

Signed-off-by: Xiaodong Ye <[email protected]>

Author: yeahdongcn

tests/test-backend-ops.cpp

@@ -765,7 +765,9 @@ struct test_case {
         // pre-graph sentinel
         add_sentinel(ctx);
 
-        ggml_tensor * out = build_graph(ctx);        if (op_name != nullptr && op_desc(out) != op_name) {
+        ggml_tensor * out = build_graph(ctx);
+        std::string current_op_name = op_desc(out);
+        if (op_name != nullptr && current_op_name != op_name) {
             //printf("  %s: skipping\n", op_desc(out).c_str());
             ggml_free(ctx);
             return true;
@@ -789,7 +791,7 @@ struct test_case {
             // Create test result for unsupported operation
             test_result result;
             result.backend_name = ggml_backend_name(backend1);
-            result.op_name = op_desc(out);
+            result.op_name = current_op_name;
             result.op_params = vars();
             result.test_mode = "test";
             result.supported = false;
@@ -911,12 +913,13 @@ struct test_case {
 
         ggml_backend_buffer_free(buf);
 
-        ggml_free(ctx);        bool test_passed = ud.ok && cmp_ok;
+        ggml_free(ctx);
 
         // Create test result
+        bool test_passed = ud.ok && cmp_ok;
         test_result result;
         result.backend_name = ggml_backend_name(backend1);
-        result.op_name = op_desc(out);
+        result.op_name = current_op_name;
         result.op_params = vars();
         result.test_mode = "test";
         result.supported = supported;
@@ -948,7 +951,9 @@ struct test_case {
         ggml_context_ptr ctx(ggml_init(params)); // smart ptr
         GGML_ASSERT(ctx);
 
-        ggml_tensor * out = build_graph(ctx.get());        if (op_name != nullptr && op_desc(out) != op_name) {
+        ggml_tensor * out = build_graph(ctx.get());
+        std::string current_op_name = op_desc(out);
+        if (op_name != nullptr && current_op_name != op_name) {
             //printf("  %s: skipping\n", op_desc(out).c_str());
             return true;
         }
@@ -958,7 +963,7 @@ struct test_case {
             // Create test result for unsupported performance test
             test_result result;
             result.backend_name = ggml_backend_name(backend);
-            result.op_name = op_desc(out);
+            result.op_name = current_op_name;
             result.op_params = vars();
             result.test_mode = "perf";
             result.supported = false;
@@ -1063,7 +1068,7 @@ struct test_case {
         // Create test result
         test_result result;
         result.backend_name = ggml_backend_name(backend);
-        result.op_name = op_desc(out);
+        result.op_name = current_op_name;
         result.op_params = vars();
         result.test_mode = "perf";
         result.supported = true; // If we got this far, it's supported