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Bug #10037
closedSince r46798 on Solaris, "[BUG] rb_vm_get_cref: unreachable" during make
Description
Since r46798, failed to build on Solaris 10 running on SPARC64.
(snip)
converter from WINDOWS-874 to UTF-8
converter from UTF-8 to WINDOWS-874
enc/trans/single_byte.trans:22: [BUG] rb_vm_get_cref: unreachable
ruby 2.2.0dev (2014-07-13) [sparc64-solaris2.10]
-- Control frame information -----------------------------------------------
c:0008 p:---- s:0056 e:000053 TOP [FINISH]
c:0007 p:---- s:0052 e:000051 CFUNC :require
c:0006 p:0015 s:0048 e:000047 METHOD enc/trans/single_byte.trans:22
c:0005 p:0244 s:0041 E:0011d8 EVAL enc/trans/single_byte.trans:48 [FINISH]
c:0004 p:---- s:0037 e:000036 CFUNC :eval
c:0003 p:0045 s:0030 e:000029 METHOD /XXXXXXXXXX/lib/erb.rb:850
c:0002 p:1228 s:0026 E:000cf8 EVAL ./tool/transcode-tblgen.rb:1043 [FINISH]
c:0001 p:0000 s:0002 E:001d68 TOP [FINISH]
-- Ruby level backtrace information ----------------------------------------
./tool/transcode-tblgen.rb:1043:in `<main>'
/XXXXXXXXXX/lib/erb.rb:850:in `result'
/XXXXXXXXXX/lib/erb.rb:850:in `eval'
enc/trans/single_byte.trans:48:in `<main>'
enc/trans/single_byte.trans:22:in `transcode_tblgen_singlebyte'
enc/trans/single_byte.trans:22:in `require'
/XXXXXXXXXX/enc/trans/windows-1250-tbl.rb:1:in `<top (required)>'
-- Other runtime information -----------------------------------------------
* Loaded script: ./tool/transcode-tblgen.rb
* Loaded features:
0 enumerator.so
1 /XXXXXXXXXX/lib/optparse.rb
2 /XXXXXXXXXX/lib/cgi/util.rb
3 /XXXXXXXXXX/lib/erb.rb
4 /XXXXXXXXXX/lib/fileutils.rb
5 /XXXXXXXXXX/lib/prettyprint.rb
6 /XXXXXXXXXX/lib/pp.rb
7 /XXXXXXXXXX/enc/trans/iso-8859-1-tbl.rb
8 /XXXXXXXXXX/enc/trans/iso-8859-2-tbl.rb
9 /XXXXXXXXXX/enc/trans/iso-8859-3-tbl.rb
10 /XXXXXXXXXX/enc/trans/iso-8859-4-tbl.rb
11 /XXXXXXXXXX/enc/trans/iso-8859-5-tbl.rb
12 /XXXXXXXXXX/enc/trans/iso-8859-6-tbl.rb
13 /XXXXXXXXXX/enc/trans/iso-8859-7-tbl.rb
14 /XXXXXXXXXX/enc/trans/iso-8859-8-tbl.rb
15 /XXXXXXXXXX/enc/trans/iso-8859-9-tbl.rb
16 /XXXXXXXXXX/enc/trans/iso-8859-10-tbl.rb
17 /XXXXXXXXXX/enc/trans/iso-8859-11-tbl.rb
18 /XXXXXXXXXX/enc/trans/iso-8859-13-tbl.rb
19 /XXXXXXXXXX/enc/trans/iso-8859-14-tbl.rb
20 /XXXXXXXXXX/enc/trans/iso-8859-15-tbl.rb
21 /XXXXXXXXXX/enc/trans/iso-8859-16-tbl.rb
22 /XXXXXXXXXX/enc/trans/windows-874-tbl.rb
[NOTE]
You may have encountered a bug in the Ruby interpreter or extension libraries.
Bug reports are welcome.
For details: http://www.ruby-lang.org/bugreport.html
Abort
make[1]: *** [enc/trans/single_byte.c] Error 134
make[1]: Leaving directory `/XXXXXXXXXX'
make: *** [srcs-enc] Error 2
The following patch fixed the problem (tested with r46821), but this completely breaks the benefit of r46798.
Index: vm_core.h
===================================================================
--- vm_core.h (revision 46821)
+++ vm_core.h (working copy)
@@ -205,6 +205,7 @@
ISEQ_TYPE_MAIN,
ISEQ_TYPE_DEFINED_GUARD
} type; /* instruction sequence type */
+ uint32_t dummy;
uint32_t stack_max; /* for stack overflow check */
rb_iseq_location_t location;
I think it is possbile that the first 8 byte (in 64-bit architecture) of "struct rb_iseq_struct" is sometimes used for some other purposes (maybe VALUE ?), and on big-endian 64-bit architecture (including SPARC64), it is frequently misunderstood as the other type.
By the way, I think "int stack_max" is better than "uint32_t stack_max" because it seems that all calculations of stack_max in compile.c(iseq_set_sequence) and vm_insnhelper.c(vm_push_frame) are conducted using int.
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