[ nedit-Bugs-2113904 ] coredump if macro re-defines itself

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Bugs item #2113904, was opened at 2008-09-16 12:22
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Category: Program
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Bert Wesarg (lebert)
Assigned to: Nobody/Anonymous (nobody)
Summary: coredump if macro re-defines itself

Initial Comment:
If you define a function, which loads a macro file, which re-defines the current function, nedit segfaults. Because it unconditionally calls ProgramFree() on the yet overridden symbol.

This bug is hardly triggered, but if you memset(0) the prog->code in the FreeProgram() function before XtFree(), it hits you right away.

To reproduce:

===autoload.nm===
define bug {
    load_macro_file($file_path $file_name)

    t_print("yuhuu\n")
}
===autoload.nm===

===bug.menu===
nedit.macroCommands: \
	bug me at NEdit Macro:F2::: {\n\
		bug()\n\
	}\n
===bug.menu===

than run:

NEDIT_HOME=$PWD ./source/nedit -import bug.menu autoload.nm

and hit F2

The only solution for now is, to remove the call to FreeProgram(). Unfortunately, this is in contradiction to bug #2078867 "memory leak in readCheckMacroString() ".



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You can respond by visiting: 
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