|View Issue Details|
|ID||Project||Category||View Status||Date Submitted||Last Update|
|0000098||mercury||Bug||public||2009-06-12 14:56||2014-01-28 15:55|
|Target Version||Fixed in Version|
|Summary||0000098: compiler throws exception with --profile-for-implicit-parallelism|
|Description||rotd-2009-06-09 aborts with an exception when compiling the standard library module|
erlang_rtti_implementation.m in grade asm_fast.gc.profdeep with --profile-for-implicit-parallelism
Uncaught Mercury exception:
Software Error: llds_out.m: Unexpected: stack var out of range
Stack dump not available in this grade.
Compiling with --no-inline-simple acts a workaround.
|Tags||No tags attached.|
--profile-for-implicit-parallelism enables inlineing which is normally disabled in deep profiling builds. This makes the resulting profile look more like the profile that would be generated by a non-profiling build.
I believe that this bug might be able to be triggered by enabling inlineing in a deep profiling build without enabling --profile-for-implicit-parallelism.
Yes, you're right. Compiling without --profile-for-implicit-paralellism but with --profile-optimized
enabled also triggers the bug.
Last edited: 2009-06-15 01:36
I've uploaded a cut-down version of erlang_rtti_implemetation that exhibits this bug.
(Curiosly, the problem goes away if I rename the module, although I can't see anywhere
in the compiler that treats the module erlang_rtti_implementation specially in C grades;
the bug is also not present if we rename the module to another stdlib or builtin module.)
The test case is derived from r1.89 of library/erlang_rtti_implementation.m.
|The compiler DOES treat standard library modules specially in some places. It does list them by name; it uses mercury_std_library_module/1 in library/library.m.|
I cannot reproduce this bug (on a compiler without the 0000309 fix) using the attached file. Perhaps changes have been made to the compiler such that the bug (whatever it was) is no longer being triggered.
I also can't reproduce this by building Mercury with these options. Unless someone knows how to reproduce this, I propose we close this bug.
|2009-06-12 14:56||juliensf||New Issue|
|2009-06-12 16:26||pbone||Note Added: 0000172|
|2009-06-12 16:49||juliensf||Note Added: 0000173|
|2009-06-15 01:32||juliensf||File Added: erlang_rtti_implementation.m|
|2009-06-15 01:34||juliensf||Note Added: 0000175|
|2009-06-15 01:36||juliensf||Note Edited: 0000175|
|2014-01-21 09:42||pbone||Relationship added||related to 0000309|
|2014-01-22 15:26||zs||Note Added: 0000609|
|2014-01-28 15:55||pbone||Note Added: 0000622|