gdb/testsuite/gdb.dwarf2/complex-partial-optimized.exp

# Copyright 2026 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# Test printing of partially optimized complex variables.

load_lib dwarf.exp

# This test can only be run on targets which support DWARF-2.
require dwarf2_support

standard_testfile main.c -dw.S

set asm_file [standard_output_file $srcfile2]

Dwarf::assemble $asm_file {
    cu {} {
	compile_unit {
	    DW_AT_language @DW_LANG_C99
	    DW_AT_name     $::srcfile
	    DW_AT_comp_dir /tmp
	} {
	    declare_labels float_label complex_label

	    float_label: DW_TAG_base_type {
		DW_AT_byte_size 4 DW_FORM_sdata
		DW_AT_encoding  @DW_ATE_float
		DW_AT_name      float
	    }

	    complex_label: DW_TAG_base_type {
		DW_AT_byte_size 8 DW_FORM_sdata
		DW_AT_encoding  @DW_ATE_complex_float
		DW_AT_name      "complex float"
	    }

	    DW_TAG_subprogram {
		MACRO_AT_func {main}
		DW_AT_type :$float_label
		DW_AT_external 1 DW_FORM_flag
	    } {
		# Complex variable 'z1' with real part as constant value, imaginary
		# optimized out
		DW_TAG_variable {
		    DW_AT_name z1
		    DW_AT_type :$complex_label
		    DW_AT_location {
			DW_OP_implicit_value 0x00 0x00 0x40 0x40
			DW_OP_piece 4
			DW_OP_piece 4
		    } SPECIAL_expr
		}
		# Complex variable 'z2' with real part optimized out, imaginary
		# part as constant value
		DW_TAG_variable {
		    DW_AT_name z2
		    DW_AT_type :$complex_label
		    DW_AT_location {
			DW_OP_piece 4
			DW_OP_implicit_value 0x00 0x00 0x40 0x40
			DW_OP_piece 4
		    } SPECIAL_expr
		}
	    }
	}
    }
}

if {[prepare_for_testing "failed to prepare" ${testfile} \
	 [list $srcfile $asm_file] {nodebug}]} {
    return
}

if {![runto_main]} {
    return
}

# Test that complex variable prints with real part shown and imaginary as
# <optimized out>.
# Expected output format: "$1 = <real_value> + <optimized out>i".
# The regex ensures there's a real value (not <optimized out>) before the +.
gdb_test "print z1" "= \[0-9\]+ \\+ <optimized out>i" \
    "complex with imaginary part optimized out shows real value"

# Test that complex variable prints with real part optimized out and imaginary
# part shown.
# Expected output format: "$2 = <optimized out> + <imaginary_value>i".
# The regex ensures there's an imaginary value (not <optimized out>) after the +.
gdb_test "print z2" "= <optimized out> \\+ \[0-9\]+i" \
    "complex with real part optimized out shows imaginary value"