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From: "emr-gnu at hev dot psu.edu" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug fortran/29842] Debugging variables with ALLOCATABLE attribute fails to read variable properties correctly
Date: Mon, 05 Dec 2022 19:01:52 +0000 [thread overview]
Message-ID: <bug-29842-4717-kI558qZkFi@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-29842-4717@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=29842
--- Comment #1 from Eric Reischer <emr-gnu at hev dot psu.edu> ---
Additional information -- for the following variable definition, here is how
various compilers encode the DWARF-2 info:
INTEGER*4, ALLOCATABLE :: I(:)
ALLOCATE( I(30) )
---------------- ifort 2021.4.0 ----------------
< 2><0x0000004d> DW_TAG_variable
DW_AT_decl_line 0x00000003
DW_AT_decl_file 0x00000001 minimal.for
DW_AT_name i
DW_AT_type <0x00000061>
DW_AT_location len 0x0009:
03a0836b0000000000: DW_OP_addr 0x006b83a0
< 1><0x00000061> DW_TAG_array_type
DW_AT_ordering DW_ORD_col_major
DW_AT_type <0x00000093>
DW_AT_data_location len 0x0002: 9706:
DW_OP_push_object_address DW_OP_deref
DW_AT_allocated len 0x000b:
97101822060c010000001a: DW_OP_push_object_address DW_OP_constu 24 DW_OP_plus
DW_OP_deref DW_OP_const4u 1 DW_OP_and
< 2><0x00000076> DW_TAG_subrange_type
DW_AT_byte_stride len 0x0005: 9710382206:
DW_OP_push_object_address DW_OP_constu 56 DW_OP_plus DW_OP_deref
DW_AT_upper_bound len 0x000e:
971040220697103022062210011c: DW_OP_push_object_address DW_OP_constu 64
DW_OP_plus DW_OP_deref DW_OP_push_object_address DW_OP_constu 48 DW_OP_plus
DW_OP_deref DW_OP_plus DW_OP_constu 1 DW_OP_minus
DW_AT_lower_bound len 0x0005: 9710402206:
DW_OP_push_object_address DW_OP_constu 64 DW_OP_plus DW_OP_deref
< 1><0x00000093> DW_TAG_base_type
DW_AT_byte_size 0x00000004
DW_AT_encoding DW_ATE_signed
DW_AT_name INTEGER(4)
---------------- ifort 2021.4.0 ----------------
---------------- ifx 2021.4.0 ----------------
< 2><0x00000043> DW_TAG_variable
DW_AT_name i
DW_AT_type <0x0000005d>
DW_AT_decl_file 0x00000001 minimal.for
DW_AT_decl_line 0x00000003
DW_AT_location len 0x0009:
0390b36b0000000000: DW_OP_addr 0x006bb390
DW_AT_linkage_name test_$I
< 1><0x0000005d> DW_TAG_array_type
DW_AT_data_location len 0x0002: 9706:
DW_OP_push_object_address DW_OP_deref
DW_AT_allocated len 0x0006: 97231806311a:
DW_OP_push_object_address DW_OP_plus_uconst 24 DW_OP_deref DW_OP_lit1 DW_OP_and
DW_AT_type <0x00000088>
< 2><0x0000006c> DW_TAG_subrange_type
DW_AT_type <0x0000008f>
DW_AT_lower_bound len 0x0004: 97234006:
DW_OP_push_object_address DW_OP_plus_uconst 64 DW_OP_deref
DW_AT_upper_bound len 0x000b:
972340069723300622311c: DW_OP_push_object_address DW_OP_plus_uconst 64
DW_OP_deref DW_OP_push_object_address DW_OP_plus_uconst 48 DW_OP_deref
DW_OP_plus DW_OP_lit1 DW_OP_minus
DW_AT_byte_stride len 0x0004: 97233806:
DW_OP_push_object_address DW_OP_plus_uconst 56 DW_OP_deref
< 1><0x00000088> DW_TAG_base_type
DW_AT_name INTEGER*4
DW_AT_encoding DW_ATE_signed
DW_AT_byte_size 0x00000004
< 1><0x0000008f> DW_TAG_base_type
DW_AT_name __ARRAY_SIZE_TYPE__
DW_AT_byte_size 0x00000008
DW_AT_encoding DW_ATE_unsigned
---------------- ifx 2021.4.0 ----------------
---------------- gfortran 7.5.0 ----------------
< 1><0x0000007b> DW_TAG_base_type
DW_AT_byte_size 0x00000004
DW_AT_encoding DW_ATE_signed
DW_AT_name integer(kind=4)
< 1><0x00000087> DW_TAG_pointer_type
DW_AT_byte_size 0x00000008
DW_AT_type <0x0000008d>
< 2><0x000000b2> DW_TAG_variable
DW_AT_name i
DW_AT_decl_file 0x00000001 minimal.for
DW_AT_decl_line 0x00000003
DW_AT_type <0x000000d0>
DW_AT_location len 0x0002: 9140:
DW_OP_fbreg -64
< 1><0x000000d0> DW_TAG_array_type
DW_AT_data_location len 0x0002: 9706:
DW_OP_push_object_address DW_OP_deref
DW_AT_allocated len 0x0004: 9706302e:
DW_OP_push_object_address DW_OP_deref DW_OP_lit0 DW_OP_ne
DW_AT_type <0x0000007b>
< 2><0x000000dd> DW_TAG_subrange_type
DW_AT_lower_bound len 0x0004: 97232006:
DW_OP_push_object_address DW_OP_plus_uconst 32 DW_OP_deref
DW_AT_upper_bound len 0x0004: 97232806:
DW_OP_push_object_address DW_OP_plus_uconst 40 DW_OP_deref
DW_AT_byte_stride len 0x0006: 97231806341e:
DW_OP_push_object_address DW_OP_plus_uconst 24 DW_OP_deref DW_OP_lit4 DW_OP_mul
---------------- gfortran 7.5.0 ----------------
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prev parent reply other threads:[~2022-12-05 19:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-02 18:45 [Bug fortran/29842] New: " emr-gnu at hev dot psu.edu
2022-12-05 19:01 ` emr-gnu at hev dot psu.edu [this message]
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