https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67939
--- Comment #1 from Gerhard Steinmetz <gerhard.steinmetz.fort...@t-online.de> --- $ echo $LANG de_DE.UTF-8 $ echo $LC_ALL $ cat z3.f90 program p character(8) :: x data x(3:1) /'abc'/ end $ gfortran -g -O0 z3.f90 z3.f90:3:17: data x(3:1) /'abc'/ 1 Warning: Initialization string starting at (1) was truncated to fit the variable (-1/3) f951: malloc.c:2369: sysmalloc: Assertion `(old_top == (((mbinptr) (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct malloc_chunk, fd)))) && old_size == 0) || ((unsigned long) (old_size) >= (unsigned long)((((__builtin_offsetof (struct ...