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SDL_GetError - SDL Documentation Wiki
Does this tell you anything, if you call it after the function has returned -1

Program received signal SIGSEGV, Segmentation fault.
0x000000000040161d in main (argc=1, args=0x7fffffffe278) at bar.cpp:194
194 run( 0 , "Center!" , 290 , 180 , ( SW - text->w ) / 2 , 290 );...