New warning in GDB 7.5

Eli Zaretskii
2012-08-18T20:03:41Z

When starting GDB 7.5 from the src directory of the Emacs source tree,
GDB now emits warnings that GDB 7.4.1 didn't:

warning: Expression is not an assignment (and might have no effect)
warning: Expression is not an assignment (and might have no effect)

These come from the following 2 lines in src/.gdbinit:

# Force loading of symbols, enough to give us VALBITS etc.
set main
# With some compilers, we need this to give us struct Lisp_Symbol etc.:
set Fmake_symbol

The comments explain why they are needed.

Why was the new warning added? what problem(s) does it solve?