I was testing out libspotify library (version 12.1.51 x86 for linux) and the application keeps crashing when I call sp_session_create() with a segmentation fault.<\/p>\n
I don’t have application key, nor a Premium Spotify account (yet), but that shouldn’t be the reason for the crash, since if I remember correctly, there is an error code for invalid application key.<\/p>\n
My code is as follows:<\/p>\n
static uint_8_t g_appkey[] = {1, 2, 3};\nstatic const char *username = \"MyUsername\";\nstatic const char *password = \"MyPassword\";\nstatic int logged_in;\n\nstatic sp_session_callbacks session_callbacks;\nstatic sp_session_config spconfig;\n\nstatic void on_login(sp_session *session, sp_error error) {\n printf(\"Callback: on_login\");\n if (error != SP_ERROR_OK) {\n printf(\"Error: Unable to login: %d\\n\", (int) error);\n exit(-1);\n }\n logged_in = 1;\n}\n\nstatic void on_main_thread_notified(sp_session *session) {\n printf(\"callback: on_main_thread_notified\");\n}\n\nstatic void on_log_message(sp_session *session, const char *data) {\n printf(\"callback: on_log_message\");\n}\n\nint main(int argc, char **argv) {\n sp_error error;\n sp_session *session;\n int next_timeout;\n\n \/* struct fill *\/\n memset(&session_callbacks, 0, sizeof(session_callbacks));\n memset(&spconfig, 0, sizeof(spconfig)); \n\n session_callbacks.logged_in = &on_login;\n session_callbacks.notify_main_thread = &on_main_thread_notified;\n session_callbacks.log_message = &on_log_message; \n\n spconfig.api_version = SPOTIFY_API_VERSION;\n spconfig.cache_location = \"tmp\";\n spconfig.settings_location = \"tmp\";\n spconfig.application_key = g_appkey;\n spconfig.application_key_size = sizeof(g_appkey);\n spconfig.user_agent = \"spot\";\n spconfig.callbacks = &session_callbacks;\n\n \/* session creation *\/ \n error = sp_session_create(&spconfig, &session);\n if (error != SP_ERROR_OK) {\n printf(\"ERROR: Unable to create spotify session: %s\\n\", sp_error_message(error));\n exit(-1);\n }\n\n \/* log in *\/\n logged_in = 0;\n sp_session_login(session, username, password, 0, NULL);\n while(!logged_in) {\n sp_session_process_events(session, &next_timeout);\n sleep(next_timeout);\n }\n\n printf(\"Sucess!!\");\n exit(0);\n}\n<\/code><\/pre>\nAny tips for where could be the problem?<\/p>\n
Appreciated for any help given.<\/p>\n
backtrace from gdb:<\/p>\n
[Thread debugging using libthread_db enabled]\n[New Thread 0xb7fe6b70 (LWP 1839)]\n[New Thread 0xb7f65b70 (LWP 1840)]\n\nProgram received signal SIGSEGV, Segmentation fault.\n0x002b9b36 in sp_session_create () from \/usr\/local\/lib\/libspotify.so.12\n(gdb) thread apply all backtrace\n\nThread 3 (Thread 0xb7f65b70 (LWP 1840)):\n#0 0x0012d422 in __kernel_vsyscall ()\n#1 0x003e6ce6 in nanosleep () at ..\/sysdeps\/unix\/syscall-template.S:82\n#2 0x0041644c in usleep (useconds=10000) at ..\/sysdeps\/unix\/sysv\/linux\/usleep.c:33\n#3 0x00293581 in ?? () from \/usr\/local\/lib\/libspotify.so.12\n#4 0x00293990 in ?? () from \/usr\/local\/lib\/libspotify.so.12\n#5 0x001d42b7 in ?? () from \/usr\/local\/lib\/libspotify.so.12\n#6 0x004ae96e in start_thread (arg=0xb7f65b70) at pthread_create.c:300\n#7 0x0041ca4e in clone () at ..\/sysdeps\/unix\/sysv\/linux\/i386\/clone.S:130\n\nThread 2 (Thread 0xb7fe6b70 (LWP 1839)):\n#0 0x0012d422 in __kernel_vsyscall ()\n#1 0x004b5245 in sem_wait@@GLIBC_2.1 () at ..\/nptl\/sysdeps\/unix\/sysv\/linux\/i386\/i686\/..\/i486\/sem_wait.S:80\n#2 0x002178fa in ?? () from \/usr\/local\/lib\/libspotify.so.12\n#3 0x001d42b7 in ?? () from \/usr\/local\/lib\/libspotify.so.12\n#4 0x004ae96e in start_thread (arg=0xb7fe6b70) at pthread_create.c:300\n#5 0x0041ca4e in clone () at ..\/sysdeps\/unix\/sysv\/linux\/i386\/clone.S:130\n\nThread 1 (Thread 0xb7fe78d0 (LWP 1836)):\n#0 0x002b9b36 in sp_session_create () from \/usr\/local\/lib\/libspotify.so.12\n#1 0x080487d5 in main ()\n(gdb) \n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"I was testing out libspotify library (version 12.1.51 x86 for linux) and the application keeps crashing when I call sp_session_create() with a segmentation fault. I don’t have application key, nor a Premium Spotify account (yet), but that shouldn’t be the reason for the crash, since if I remember correctly, there is an error code for […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3454","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/3454","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=3454"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/3454\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=3454"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=3454"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=3454"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}