windows needs fflush after fprintf

3 files changed, 9 insertions, 0 deletions

diff --git a/test/core/security/create_jwt.cc b/test/core/security/create_jwt.cc
index 867a8ba575..56ae9c891c 100644
--- a/test/core/security/create_jwt.cc
+++ b/test/core/security/create_jwt.cc
@@ -39,6 +39,7 @@ void create_jwt(const char* json_key_file_path, const char* service_url,
   grpc_slice_unref(json_key_data);
   if (!grpc_auth_json_key_is_valid(&key)) {
     fprintf(stderr, "Could not parse json key.\n");
+    fflush(stderr);
     exit(1);
   }
   jwt = grpc_jwt_encode_and_sign(
@@ -47,6 +48,7 @@ void create_jwt(const char* json_key_file_path, const char* service_url,
   grpc_auth_json_key_destruct(&key);
   if (jwt == nullptr) {
     fprintf(stderr, "Could not create JWT.\n");
+    fflush(stderr);
     exit(1);
   }
   fprintf(stdout, "%s\n", jwt);
@@ -72,16 +74,19 @@ int main(int argc, char** argv) {
 
   if (json_key_file_path == nullptr) {
     fprintf(stderr, "Missing --json_key option.\n");
+    fflush(stderr);
     exit(1);
   }
   if (scope != nullptr) {
     if (service_url != nullptr) {
       fprintf(stderr,
               "Options --scope and --service_url are mutually exclusive.\n");
+      fflush(stderr);
       exit(1);
     }
   } else if (service_url == nullptr) {
     fprintf(stderr, "Need one of --service_url or --scope options.\n");
+    fflush(stderr);
     exit(1);
   }
 
diff --git a/test/core/security/print_google_default_creds_token.cc b/test/core/security/print_google_default_creds_token.cc
index b3742f58a8..d71116d8f6 100644
--- a/test/core/security/print_google_default_creds_token.cc
+++ b/test/core/security/print_google_default_creds_token.cc
@@ -45,6 +45,7 @@ static void on_metadata_response(void* arg, grpc_error* error) {
   synchronizer* sync = static_cast<synchronizer*>(arg);
   if (error != GRPC_ERROR_NONE) {
     fprintf(stderr, "Fetching token failed: %s\n", grpc_error_string(error));
+    fflush(stderr);
   } else {
     char* token;
     GPR_ASSERT(sync->md_array.size == 1);
@@ -81,6 +82,7 @@ int main(int argc, char** argv) {
   creds = grpc_google_default_credentials_create();
   if (creds == nullptr) {
     fprintf(stderr, "\nCould not find default credentials.\n\n");
+    fflush(stderr);
     result = 1;
     goto end;
   }
diff --git a/test/core/security/verify_jwt.cc b/test/core/security/verify_jwt.cc
index e039970c67..5d32ce0cdb 100644
--- a/test/core/security/verify_jwt.cc
+++ b/test/core/security/verify_jwt.cc
@@ -39,6 +39,7 @@ typedef struct {
 static void print_usage_and_exit(gpr_cmdline* cl, const char* argv0) {
   char* usage = gpr_cmdline_usage_string(cl, argv0);
   fprintf(stderr, "%s", usage);
+  fflush(stderr);
   gpr_free(usage);
   gpr_cmdline_destroy(cl);
   exit(1);
@@ -62,6 +63,7 @@ static void on_jwt_verification_done(void* user_data,
     GPR_ASSERT(claims == nullptr);
     fprintf(stderr, "Verification failed with error %s\n",
             grpc_jwt_verifier_status_to_string(status));
+    fflush(stderr);
   }
 
   gpr_mu_lock(sync->mu);