[Bug middle-end/21460] sjlj_emit_function_enter adds rtl to wrong block

[gcc-bugzilla at antony dot heightanxiety dot com]

--- Comment #9 from gcc-bugzilla at antony dot heightanxiety dot com  
2005-10-13 23:07 ---
The problem is indeed fixed in 4.0.2, thank you.


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gcc-bugzilla at antony dot heightanxiety dot com changed:

   What|Removed |Added

 Status|RESOLVED|VERIFIED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21460

[Bug tree-optimization/21460] New: Internal compiler error in calc_dfs_tree on valid code

[gcc-bugzilla at antony dot heightanxiety dot com]

When compiling a C++ file, gcc 4.0.0 and 4.0.1 20050507 prerelease report an 
internal compiler error:

> /gcc-test/bin/g++ ice.cpp -O2
ice.cpp: In constructor 'SomeException::SomeException(const char*, ...)':
ice.cpp:21: internal compiler error: in calc_dfs_tree, at dominance.c:376
Please submit a full bug report,
with preprocessed source if appropriate.
See http://gcc.gnu.org/bugs.html> for instructions.

> /gcc-test/bin/g++ -v
Using built-in specs.
Target: powerpc-linux
Configured with: ../gcc-4.0-20050507/configure --enable-languages=c,c++ --
prefix=/gcc-test --with-gnu-as --with-gnu-ld --with-system-zlib --without-
included-gettext --enable-threads=posix --enable-haifa --enable-sjlj-exceptions 
powerpc-linux
Thread model: posix
gcc version 4.0.1 20050507 (prerelease)

When not using -O2 or when using -O2 -msoft-float, the ICE isn't reported. This 
points to

  /* Save FP registers if needed.  */
  if (DEFAULT_ABI == ABI_V4
  && TARGET_HARD_FLOAT && TARGET_FPRS
  && ! no_rtl
  && next_cum.fregno <= FP_ARG_V4_MAX_REG)

branch in gcc/config/rs6000/rs6000.c whose contents causes the problem 
(directly 
or indirectly).

I have managed to create a minimal testcase for the problem and will attach it 
to this report.

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   Summary: Internal compiler error in calc_dfs_tree on valid code
   Product: gcc
   Version: 4.0.0
Status: UNCONFIRMED
  Severity: normal
  Priority: P2
 Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: gcc-bugzilla at antony dot heightanxiety dot com
CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: powerpc-unknown-linux
  GCC host triplet: powerpc-unknown-linux
GCC target triplet: powerpc-unknown-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21460

[Bug tree-optimization/21460] Internal compiler error in calc_dfs_tree on valid code

[gcc-bugzilla at antony dot heightanxiety dot com]

--- Additional Comments From gcc-bugzilla at antony dot heightanxiety dot 
com  2005-05-09 04:57 ---
Created an attachment (id=8843)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8843&action=view)
The isolated snippet causing the problem

I'm including the .cpp file and not the .i file since it doesn't need to be
preprocessed.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21460