fix gcc warnings about not checking asprintf return

git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@1735 b68d4a1b-bc3d-0410-92ed-d4ac073336b7

urjtag/ChangeLog

@@ -37,6 +37,8 @@
 
   * include/urjtag/bfin.h: Tweak header ifdef protection.
 
+  * src/cmd/cmd_bfin.c: Fix gcc warnings about unused asprintf() return.
+
 2010-01-24  Arnim Laeuger  <arniml>
 
   * src/tap/usbconn/libftdi.c, src/tap/usbconn/libftd2xx.c:

urjtag/src/cmd/cmd_bfin.c

@@ -387,11 +387,16 @@ cmd_bfin_run (urj_chain_t *chain, char *params[])
                         int ret;
 
                         /* TODO  Pass -mcpu= to gas.  */
-                        asprintf (&tmp_buf,
-                                  "bfin-%3$s-as --version >/dev/null 2>&1 || exit $?;"
-                                  "echo '%1$s' | bfin-%3$s-as - -o \"%2$s\""
-                                  " && bfin-%3$s-objcopy -O binary \"%2$s\"",
-                                  insns_string, tmpfile, tuples[t]);
+                        ret = asprintf (&tmp_buf,
+                                        "bfin-%3$s-as --version >/dev/null 2>&1 || exit $?;"
+                                        "echo '%1$s' | bfin-%3$s-as - -o \"%2$s\""
+                                        " && bfin-%3$s-objcopy -O binary \"%2$s\"",
+                                        insns_string, tmpfile, tuples[t]);
+                        if (ret == -1)
+                        {
+                            urj_error_set (URJ_ERROR_OUT_OF_MEMORY, _("asprintf() failed"));
+                            goto execute_cleanup;
+                        }
                         ret = system (tmp_buf);
                         free (tmp_buf);
                         if (WIFEXITED(ret))