I only did the “make install” after “make w64″ for the 64-bit version. There was no “.bin/szg.exe” at this time, only “.w64/szg.exe”

When using the szg -e expr form, be careful with shell expansion
taking place before  passing  expr  to  szg. Quote when necessary.

Examples with Bourne compatible shells:

szg -e 6 * 7 will fail spectacularly, as your current dir listing
will be substituted for *.

szg -e 6*7 may work, except if you have a file called 617 in your
current dir, resulting in 617 instead of 42.

In other words, always quote when you multiply:

szg -e "12 * 43"

As to installation, did you ‘make’ before ‘make install’?
The normal make compiles the Cygwin target (.bin/szg.exe), which is copied to /usr/bin/ when you install.

$ ./szg.exe -e 4 * 3
syntax error
unable to parse number
unable to parse number
unable to parse number
3

./szg -e XffD – Works
Interactive is also fine.

I made one of my common mistakes and hit Ctrl-Z to exit szg. Which put szg into the background. So I ran fg to get it back into the foreground so I could quit properly, and got this:

$ fg
./szg
input in flex scanner failed

OK, that was a stupid user error, so feel free to ignore it if you wish.

Anyway, got everything installed, ran make w64, got a error:

patterns.l: In function ‘yylex’:
patterns.l:25:25: warning: assignment makes pointer from integer without a cast

No biggee, .w64 directory contained szg.exe.

This hangs until ^C
c:\pktemp\szg-0.5\.w64>szg -e 3600*24
^C

But AHA, this works:
c:\pktemp\szg-0.5\.w64>szg -e 3600 * 24
86400

Could that have been the original problem all along?
Gotta add some code to require (or put) spaces around the operator?

“szg -e XffD” – also works.

But, in a Cygwin Bash shell…
./szg -e 3600 * 24 – Hangs until ^C
./szg -e 3600*24 – Same

But this works:
$ ./szg -e XffD
255

A little weird…

Anyway, interactively it work in both Windows and Bash.

BTW, “make install” does not install.

c:\pktemp\szg-0.5>make install
cp: cannot stat `.bin/szg.exe’: No such file or directory
makefile:114: recipe for target `install’ failed
make: *** [install] Error 1

make w64

After that .w64/szg.exe is the native Windows x64 executable.
You need to install Cygwin’s x64 Mingw cross-compiler beforehand.
The Cygwin executable is also fixed: .bin/szg

The latter strangely did not cause any problems on 32bit platforms.

There will be a new target ‘make w64′ to produce a proper Win64 executable.
Update hopefully until tonight.
And I owe you a beer.

Is it just the -e option that crashes, or the interactive mode as well?

Hangs: szg -e 3600*24
AppCrash: szg -e XffD

Running Cygwin on the same machine:
$ ./szg -e XffD
Segmentation fault

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