(gdb) bt
#0 0x00007ffff4cc3fea in __find_specmb (format=0x7ffff4601140 ").") at printf-parse.h:108 #0 0x00007ffff4cc3fea in __find_specm
(gdb) bt
#0 0x00007ffff4cc3fea in __find_specmb (format=0x7ffff4601140 ").") at printf-parse.h:108 #0 0x00007ffff4cc3fea in __find_specm