[Bug fortran/78351] comma not terminating READ of formatted input field - ok in 4.1.7, not 4.4.7- maybe related to 25419?

["jvdelisle at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78351

Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |jvdelisle at gcc dot gnu.org

--- Comment #9 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Two things going on here.

First, Looking at read_decimal in read.c way back on the 4.1 branch, we did
nothing special other than generate an error and return. Same code we have now.
So we never tried to interpret the comma uniquely.

We are getting a segfault right after the error and the backtrace is landing in
the middle of read_block_direct, so the error recovery is broken. Segfault  is
never acceptable so I will fix that first. (error recovery)

By any chance do your data streams have the data padded with spaces such that
they do not violate the format width specifier?

Do your actual read statements also have the END= or EOR= specifiers?