https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66708
Gerhard Steinmetz <gerhard.steinmetz.fort...@t-online.de> changed: What |Removed |Added ---------------------------------------------------------------------------- Severity|normal |enhancement --- Comment #1 from Gerhard Steinmetz <gerhard.steinmetz.fort...@t-online.de> --- Formatted read or write with no variable list needs a format (fmt) string longer than one character. This is checked already -- partly -- but very good, indeed. Please take a look at the message text. $ cat z_write_fmt_too_short_1.f90 program p character(1), parameter :: fmt1 = '(' character(1) :: fmt2 = '(' write (*, fmt1) write (*, fmt2) write (*, '(') end $ gfortran -g -O0 -Wall -fcheck=all z_write_fmt_too_short_1.f90 z_write_fmt_too_short_1.f90:4:14: write (*, fmt1) 1 Error: Unexpected end of format string in format string at (1) z_write_fmt_too_short_1.f90:6:14: Error: Unexpected end of format string in format string at (1) --- $ cat z_write_fmt_too_short_0.f90 program p character(1), parameter :: fmt1 = '(' character(1) :: fmt2 = '(' write (*, fmt1(1:0)) write (*, fmt2(1:0)) write (*, '') end $ gfortran z_write_fmt_too_short_0.f90 z_write_fmt_too_short_0.f90:4:13: write (*, fmt1(1:0)) 1 Error: Missing leading left parenthesis in format string at (1) z_write_fmt_too_short_0.f90:6:13: write (*, '') 1 Error: Missing leading left parenthesis in format string at (1)