https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118406
Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever confirmed|0 |1 Last reconfirmed| |2025-01-11 --- Comment #3 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> --- Confirmed. $ ./a.out 170141183460469231731687303715884105727 170141183480276272351030016075267833856 a.out: ../../../trunk/libgfortran/runtime/string.c:254: gfc_itoa: Assertion `n <= UINT64_MAX' failed. Program received signal SIGABRT: Process abort signal. Backtrace for this error: #0 0x7f6896f4008f in ??? #1 0x7f6896f990f4 in ??? #2 0x7f6896f3ffdd in ??? #3 0x7f6896f27941 in ??? #4 0x7f6896f2785d in ??? #5 0x7f6896f38106 in ??? #6 0x7f68974c5656 in write_decimal_unsigned at ../../../trunk/libgfortran/io/write.c:995 #7 0x7f68974ca746 in write_unsigned at ../../../trunk/libgfortran/io/write.c:1581