[GiNaC-devel] [PATCH] Fix unsigned character bugs in ginac-1.5.8

[Martin Guy]

Hi
   There are a couple of bugs that stop ginac from working on machines
whose characters are unsigned by default (where a conversion to int
goves a value 0-255).
It's the classic "char c = getchar(); if (c == EOF)" with result that
it doesn't detect EOF on unsigned machines, or exits prematurely on
signed machines if it reads a character 255.
The fixes are to replace "char" with "int" so that all 257 possible
return values are correctly handled.
   The attached patch for ginac-1.4.3 still applies to 1.5.8

Cheers

    M
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