[fpc-devel] Compiling for libgdb, and using make -j on larger SPARC systems

[Mark Morgan Lloyd]

Mark Morgan Lloyd wrote:

> Fatal: Compilation aborted
> An unhandled exception occurred at $001E61C0 :
> EDivByZero : Division by zero
>   $001E61C0  TCGASSIGNMENTNODE__PASS_GENERATE_CODE,  line 785 of ncgld.pas
> 
> At this point: what's actually running, i.e. what command should I apply 
> gdb to to get a decent backtrace?

If I revert to 2.6.2 and run ppcsparc under gdb, I get this as a backtrace:

Program received signal SIGFPE, Arithmetic exception.
0x001e61c0 in TCGASSIGNMENTNODE__PASS_GENERATE_CODE (this=0xf5d6abe0) at 
ncgld.pas:785
785                                 if (right.location.reference.offset 
mod alignmentrequirement<>0) or
(gdb) bt
#0  0x001e61c0 in TCGASSIGNMENTNODE__PASS_GENERATE_CODE 
(this=0xf5d6abe0) at ncgld.pas:785
#1  0x0014d9c4 in SECONDPASS (P=0xf5d6abe0) at pass_2.pas:195
#2  0x001daf94 in TCGBLOCKNODE__PASS_GENERATE_CODE (this=0xf5b1d320) at 
ncgbas.pas:366
#3  0x0014d9c4 in SECONDPASS (P=0xf5b1d320) at pass_2.pas:195
#4  0x001dc2b4 in TCGIFNODE__PASS_GENERATE_CODE (this=0xf5d737f0) at 
ncgflw.pas:275
#5  0x0014d9c4 in SECONDPASS (P=0xf5d737f0) at pass_2.pas:195
#6  0x001daf94 in TCGBLOCKNODE__PASS_GENERATE_CODE (this=0xf5b1c0a0) at 
ncgbas.pas:366
#7  0x0014d9c4 in SECONDPASS (P=0xf5b1c0a0) at pass_2.pas:195
#8  0x001daf94 in TCGBLOCKNODE__PASS_GENERATE_CODE (this=0xf5b1eaa0) at 
ncgbas.pas:366
#9  0x0014d9c4 in SECONDPASS (P=0xf5b1eaa0) at pass_2.pas:195
#10 0x0014db14 in DO_SECONDPASS (P=0xf5b1eaa0) at pass_2.pas:227
#11 0x0016a368 in TCGPROCINFO__GENERATE_CODE (this=0xf6357cd0) at 
psub.pas:1048
#12 0x0016c170 in DO_GENERATE_CODE (PI=0xf6357cd0, parentfp=0xffed8790) 
at psub.pas:1557
..

Also (if I'm doing this right)

(gdb) print alignmentrequirement
$1 = 0

Any thoughts appreciated.

-- 
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]