[Bug tdep/12798] New: Failed to pass _Complex args in value

[Bug tdep/12798] New: Failed to pass _Complex args in value

[qiyao at gcc dot gnu.org]

http://sourceware.org/bugzilla/show_bug.cgi?id=12798

           Summary: Failed to pass _Complex args in value
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: tdep
        AssignedTo: unassigned@sourceware.org
        ReportedBy: qiyao@gcc.gnu.org
              Host: x86_64-linux
            Target: x86_64-linux
             Build: x86_64-linux


Created attachment 5748
  --> http://sourceware.org/bugzilla/attachment.cgi?id=5748
test case

GDB doesn't pass _Complex args in value in a correct way.

Here are the steps to reproduce it,

$ gcc -g complex-value.c -o complex-value
$ ./gdb ./complex-value
(gdb) b main
Breakpoint 1 at 0x4008b5: file /scratch/yao/complex-value.c, line 58.
(gdb) run
Starting program: /scratch/yao/gdb_cvs/build-x86_64/gdb/compllex-value

Breakpoint 1, main () at /scratch/yao/complex-value.c:58
58        return 0;
(gdb) p t_float_complex_values(fc1, fc2)
During symbol reading, incomplete CFI data; unspecified registers (e.g., rax)
at 0x4008b5.
$1 = 0  // <-- wrong.  1 is expected here.
(gdb) p t_double_complex_values(dc1, dc2)
$2 = 0  // <-- wrong.  1 is expected here.
(gdb) p t_long_double_complex_values(ldc1, ldc2)
$3 = 1  // <-- correct.

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[Bug tdep/12798] Failed to pass _Complex args in value

[cvs-commit at gcc dot gnu.org]

http://sourceware.org/bugzilla/show_bug.cgi?id=12798

--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> 2012-10-23 18:17:01 UTC ---
CVSROOT:    /cvs/src
Module name:    src
Changes by:    kettenis@sourceware.org    2012-10-23 18:16:55

Modified files:
    gdb            : ChangeLog amd64-tdep.c amd64-tdep.h 

Log message:
    PR gdb/12796
    PR gdb/12798
    PR gdb/12800
    * amd64-tdep.h (enum amd64_regnum): Add AMD64_ST1_REGNUM and
    AMD64_FTAG_REGNUM.
    * amd64-tdep.c (amd64_classify): Classify complex types.
    (amd64_return_value): Handle the COMPLEX_X87 class.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.14750&r2=1.14751
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/amd64-tdep.c.diff?cvsroot=src&r1=1.113&r2=1.114
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/amd64-tdep.h.diff?cvsroot=src&r1=1.22&r2=1.23

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[Bug tdep/12798] Failed to pass _Complex args in value

[jan.kratochvil at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12798

Jan Kratochvil <jan.kratochvil at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |jan.kratochvil at redhat
                   |                            |dot com
         Resolution|                            |FIXED
         AssignedTo|unassigned at sourceware    |kettenis at sourceware dot
                   |dot org                     |org

--- Comment #2 from Jan Kratochvil <jan.kratochvil at redhat dot com> 2012-10-24 13:40:19 UTC ---
Patch is checked in and KFAIL has been removed from the testsuite.

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