[sdcc-devel] [ sdcc-Bugs-3034858 ] Fatal compiler internal error when using & with *

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Bugs item #3034858, was opened at 2010-07-26 12:09
Message generated for change (Tracker Item Submitted) made by davidegrayson
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Category: C-Front End
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: David Grayson (davidegrayson)
Assigned to: Nobody/Anonymous (nobody)
Summary: Fatal compiler internal error when using & with *

Initial Comment:
The following code fails to compile for me:

void a(unsigned char * b);
void main()
{
    a(&(*(unsigned char *)0));
}

The code above is in a file called test.c (attached below).  I invoked sdcc with the command `sdcc -c test.c`.

My sdcc -v is: SDCC : mcs51/gbz80/z80/ds390/pic16/pic14/TININative/ds400/hc08 2.9.7 #5891 (Jul 26 2010) (MINGW32)

I am running Windows Vista 64-bit, Service Pack 1.

The error message I get from SDCC is:

test.c:4: error 9: FATAL Compiler Internal Error in file '/home/sdcc-builder/build/sdcc-build/orig/sdcc/src/SDCCicode.c' line number '1401' :  operandOperation invalid operator
Contact Author with source code
Assertion failed: 0, file /home/sdcc-builder/build/sdcc-build/orig/sdcc/src/SDCCicode.c, line 1403

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
Caught signal 22: SIGABRT


The only workaround I know of is to remove the unary address (&) and dereference (*) operators.

P.S. Thank you for fixing the last bug I reported, I really appreciate it!

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