[gs-bugs] [Bug 692520] New: gdevpdfc.c: warning: cast from pointer to integer of different size

[bugzilla-daemon at ghostscript.com]

http://bugs.ghostscript.com/show_bug.cgi?id=692520

           Summary: gdevpdfc.c: warning: cast from pointer to integer of
                    different size
           Product: Ghostscript
           Version: master
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P4
         Component: PDF Writer
        AssignedTo: ken.sharp at artifex.com
        ReportedBy: cloos at jhcloos.com
         QAContact: gs-bugs at ghostscript.com


when compiling ghostscript-9.02, GCC complains:

./base/gdevpdfc.c: In function 'pdf_separation_color_space':
./base/gdevpdfc.c:513:21: warning: cast from pointer to integer of different
size
./base/gdevpdfc.c:548:21: warning: cast from pointer to integer of different
size

Those two lines do:

(code = (int)cos_c_string_value(&v, (const char *)pcsn->DeviceCMYK)) < 0

and:

(code = (int)cos_c_string_value(&v, pcsn->DeviceRGB)) < 0

but cos_c_string_value() is declared:

const cos_value_t *cos_c_string_value(cos_value_t *, const char *);

An int, of course, is too small to hold a ptr on a LP64 arch.


There is a similar problem in the ADJUST_TO_CHUNK macro in gs/base/gsroprun1.h.
That macro also casts a pointer to an int.  You may need an I32LP64 version of
that macro for arches like amd64.


the last example is in gs/base/rinkj/evenbetter-rll.c eb_malloc_aligned(). 
that function will fail only if malloc(3) returns a block which starts just
before address 0x100000000.  Which is probably unlikely enough to ignore.

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