[erlang-bugs] Bug in HiPE compiled compiler

[Kostis Sagonas]

Mikael Pettersson wrote:
> Adam Lindberg writes:
>  > Hi,
>  > 
>  > The following module produces a compiler error in R13B03 and R13B04:
>  > 
>  > -module(a).
>  > f() -> hipe is broken.
>  > 
>  > 
>  > The error is, just as expected:
>  > $> erlc a.erl
>  > a.erl:2: syntax error before: is
>  > 
>  > 
>  > However, if the compiler is HiPE compiled (with NATIVE_LIBS_ENABLED=yes), the following error occurs:
>  > 
>  > $> erlc a.erl
>  > a.erl:none: internal error in parse_module;
>  > crash reason: {function_clause,[{erl_parse,yeccpars2_6,7},
>  >                                 {erl_parse,yeccpars0,5},
>  >                                 {epp,parse_file,1},
>  >                                 {epp,parse_file,1},
>  >                                 {epp,parse_file,3},
>  >                                 {compile,parse_module,1},
>  >                                 {compile,'-internal_comp/4-anonymous-1-',2},
>  >                                 {compile,fold_comp,3}]}
> 
> I can't reproduce this with R14A on i686-linux.
> 
> If you can still trigger the failure with R14A, please show us the
> complete sequence of steps needed to reproduce it.

The behaviour is reproducible.

At least in my system that has kernel, stdlib, compiler and hipe all in 
native code (configure --enable-native-libs) the following sequence of 
commands shows the difference if one native compiles or not only one 
specific file.

@hektor [~/.../otp] cd lib/stdlib/src
@hektor [~/.../otp/lib/stdlib/src] erlc -W  +debug_info -I../include 
-I../../kernel/include -o../ebin erl_parse.erl
@hektor [~/.../otp/lib/stdlib/src] erlc a.erl
./a.erl:3: syntax error before: is
@hektor [~/HiPE/otp/lib/stdlib/src] erlc -W  +debug_info +native 
-I../include -I../../kernel/include -o../ebin erl_parse.erl
@hektor [~/.../otp/lib/stdlib/src] erlc a.erl
./a.erl:none: internal error in parse_module;
crash reason: {function_clause,[{erl_parse,yeccpars2_6,7},
                                 {erl_parse,yeccpars0,5},
                                 {epp,parse_file,1},
                                 {epp,parse_file,1},
                                 {epp,parse_file,3},
                                 {compile,parse_module,1},
 
{compile,'-internal_comp/4-anonymous-1-',2},
                                 {compile,fold_comp,3}]}

Kostis