fix static prim api code gen (#51445)

* fix static prim api code gen

* fix static prim api gen

paddle/fluid/prim/api/auto_code_generated/CMakeLists.txt

@@ -28,7 +28,7 @@ set(prim_api_h_path
     "${PADDLE_SOURCE_DIR}/paddle/fluid/prim/api/generated_prim/prim_generated_api.h"
 )
 set(static_prim_api_template_path
-    "${PADDLE_SOURCE_DIR}/paddle/fluid/prim/api/auto_code_generated/template/static_prim_api.cc.tpl"
+    "${PADDLE_SOURCE_DIR}/paddle/fluid/prim/api/auto_code_generated/template/static_prim_api.cc.j2"
 )
 set(eager_prim_api_gen_file
     ${PADDLE_SOURCE_DIR}/paddle/fluid/prim/api/auto_code_generated/eager_gen.py)

paddle/fluid/prim/api/auto_code_generated/template/static_prim_api.cc.tpl → paddle/fluid/prim/api/auto_code_generated/template/static_prim_api.cc.j2

-{% from "utils.tpl" import static_prim_api %}
+{% from "utils.cc.j2" import static_prim_api %}
 // Generated by /paddle/fluid/prim/api/auto_code_generated/static_gen.py.  
 // DO NOT EDIT!
 

paddle/fluid/prim/api/auto_code_generated/template/utils.tpl → paddle/fluid/prim/api/auto_code_generated/template/utils.cc.j2

@@ -75,7 +75,7 @@ std::tuple<{{sequence('', '', ', ', names)}}>
 {%- macro static_prim_api_input_optional(input) -%}
   {%- if input.typename=='Tensor[]' -%} {#- render the input of type paddle::optional<std::Vector<Tensor>> -#}
 if ({{input.name}}) {
-  std::vector<std::string> {{input.name}}_names;
+  std::vector<std::string> {{input.name}}_names({{input.name}}.get().size());
   std::transform({{input.name}}.get().begin(), {{input.name}}.get().end(), {{input.name}}_names.begin(), [](const Tensor& t) {
     return std::static_pointer_cast<prim::DescTensor>(t.impl())->Name();
   });
@@ -91,7 +91,7 @@ if ({{input.name}}) {
 
 {%- macro static_prim_api_input_without_optional(input) -%}
   {%- if input.typename is tensor_sequence -%} {#- render the input of type std::Vector<Tensor> -#}
-std::vector<std::string> {{input.name}}_names;
+std::vector<std::string> {{input.name}}_names({{input.name}}.size());;
 std::transform({{input.name}}.begin(), {{input.name}}.end(), {{input.name}}_names.begin(), [](const Tensor& t) {
   return std::static_pointer_cast<prim::DescTensor>(t.impl())->Name();
 });