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Alexander Huemer alexander.huemer at xx.vuHi, while fixing some trivial compiler warnings in openbsc I stumbled over this: > Making all in abis > CC abis_test.o > abis_test.c: In function ‘test_simple_sw_config’: > abis_test.c:68:9: warning: format ‘%u’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long int’ [-Wformat=] > printf("Start: %u len: %zu\n", descr[0].start - simple_config, descr[0].len); > ^ > abis_test.c: In function ‘test_dual_sw_config’: > abis_test.c:111:9: warning: format ‘%u’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long int’ [-Wformat=] > printf("Start: %u len: %zu\n", descr[0].start - dual_config, descr[0].len); > ^ > abis_test.c:115:9: warning: format ‘%u’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long int’ [-Wformat=] > printf("Start: %u len: %zu\n", descr[1].start - dual_config, descr[1].len); > ^ > abis_test.c: In function ‘test_sw_selection’: > abis_test.c:132:9: warning: format ‘%u’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long int’ [-Wformat=] > printf("Start: %u len: %zu\n", descr[0].start - load_config, descr[0].len); > ^ > abis_test.c:136:9: warning: format ‘%u’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long int’ [-Wformat=] > printf("Start: %u len: %zu\n", descr[1].start - load_config, descr[1].len); The relevant expression is: descr[1].start - load_config and variations thereof. descr[1].start is declared include/openbsc/abis_nm.h as: const uint8_t *start; simple_config is declared as: static const uint8_t simple_config[] So an address is taken and the first element (implicitly) of an uint8 array is substracted from it. Maybe I just don't get the beauty of this, for me this looks wrong. Kind regards, -Alex