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# Copyright 2019-2024 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/> .
# Further testing of placing breakpoints in nested subroutines.
require allow_fortran_tests
load_lib "fortran.exp"
standard_testfile ".f90"
if {[build_executable ${testfile}.exp ${testfile} \
${srcfile} {debug f90}]} {
return -1
}
set int4 [fortran_int4]
# When WITH_SRC_PREFIX_P is true then some symbol references will be
# prefixed with the filename. When WITH_NEST_PREFIX_P is true then
# nested subroutine symbols will be prefixed with their parent
# subroutine scope.
proc do_bp_tests {with_src_prefix_p with_nest_prefix_p} {
global testfile srcfile
global int4
global hex
clean_restart ${testfile}
if { $with_src_prefix_p } {
set src_prefix "${srcfile}:"
} else {
set src_prefix ""
}
if { $with_nest_prefix_p } {
set nest_prefix "contains_keyword::"
} else {
set nest_prefix ""
}
# Normally, info symbol prints the symbol table name for any fortran
# symbols (since symbol lookup happens via the minimal symbol
# table). This would correspond to the linkage name in the full symbol
# table.
# For gfortran (and maybe others) these names currently have the form
# XXXX.NUMBER where XXXX is the symbol name and NUMBER a compiler generated
# appendix for mangling. This mangled name gets recognized by the Ada
# demangler/decoder and decoded as Ada (setting the symbol language to Ada)
# to XXXX. This leads to the somewhat unexpected output of XXXX over
# XXXX.NUMBER for info symbol.
# For ifort and ifx the generated linkage names have the form
# SCOPEA_SCOPEB_XXXX_ which is not recognized by the Ada demangler and thus
# printed as is.
# Note that there is no Fortran mangling standard. We keep the
# gfortran behavior as is and extend the test to reflect ifx and ifort
# mangling.
proc get_linkage_name_pattern {symbol_name} {
if { [test_compiler_info {ifort-*} f90]
|| [test_compiler_info {ifx-*} f90] } {
return "\(?:.*_\)?${symbol_name}_?"
} else {
return ${symbol_name}
}
}
# Test setting up breakpoints and otherwise examining nested
# functions before the program starts.
with_test_prefix "before start" {
foreach entry \
[list \
[list "increment" "${int4} \\\(${int4}\\\)"] \
[list "increment_program_global" "${int4} \\\(void\\\)"] \
[list "hidden_variable" "void \\\(void\\\)"]] {
set function [lindex $entry 0]
set type [lindex $entry 1]
# Currently referencing symbols using 'info',
# 'whatis' and 'ptype' before the program is
# started doesn't work. This is the same
# behavior we see in C++ so I don't think this
# is a failure, just a limitation in current GDB.
if { ${with_nest_prefix_p} } {
gdb_test "info symbol ${nest_prefix}${function}" \
"[get_linkage_name_pattern ${function}] in section .*"
gdb_test "whatis ${nest_prefix}${function}" \
"type = ${type}"
gdb_test "ptype ${nest_prefix}${function}" \
"type = ${type}"
gdb_test "print ${nest_prefix}${function}" \
"{${type}} $hex <contains_keyword::${function}>"
}
gdb_breakpoint "${src_prefix}${nest_prefix}${function}"
}
}
# Break on a contained function and run to it.
if {![runto ${src_prefix}[gdb_get_line_number "pre_init"]]} {
return
}
# Call a contained function.
if { ${with_nest_prefix_p} } {
gdb_test_stdio "call ${nest_prefix}subroutine_to_call()" " called" ""
}
# Break on another contained function and run to it.
gdb_breakpoint "${src_prefix}${nest_prefix}increment"
gdb_continue_to_breakpoint "increment" ".*increment = i \\\+ 1"
gdb_breakpoint ${src_prefix}[gdb_get_line_number "post_increment"]
gdb_continue_to_breakpoint "post_increment"
# Check arguments and locals report the correct values. 12 is
# passed in and 13 is the result after adding 1.
gdb_test "info args" "i = 12"
gdb_test "info locals" " = 13"
# Check we can see variables from an outer program scope.
gdb_breakpoint ${src_prefix}[gdb_get_line_number "post_increment_global"]
gdb_continue_to_breakpoint "post_increment_global" \
".*print \\\*, program_i ! post_increment_global"
gdb_test "info args" "No arguments." \
"no argument subroutine has no arguments"
gdb_test "p program_i" " = 7" "printing outer scoped variable"
# Stepping into a contained subroutine.
gdb_breakpoint ${src_prefix}[gdb_get_line_number "pre_step"]
gdb_continue_to_breakpoint "pre_step" ".*call step\\\(\\\) ! pre_step"
gdb_test "step" \
".*print '\\\(A\\\)', \\\"step\\\" ! post_step" \
"step into the correct place"
# Local hides program global.
gdb_breakpoint ${src_prefix}[gdb_get_line_number "post_hidden"]
gdb_continue_to_breakpoint "post_hidden" \
".*print \\\*, program_i ! post_hidden"
gdb_test "p program_i" " = 30" "printing hidden global"
# Check info symbol, whatis and ptype can find information on
# these nested functions.
foreach entry \
[list \
[list "increment" "${int4} \\\(${int4}\\\)"] \
[list "increment_program_global" "${int4} \\\(void\\\)"]] {
set function [lindex $entry 0]
set type [lindex $entry 1]
with_test_prefix $function {
gdb_test "info symbol ${nest_prefix}$function" \
"[get_linkage_name_pattern $function] in section .*"
gdb_test "whatis ${nest_prefix}$function" \
"type = ${type}"
gdb_test "ptype ${nest_prefix}$function" \
"type = ${type}"
}
}
}
foreach_with_prefix src_prefix { 0 1 } {
foreach_with_prefix nest_prefix { 0 1 } {
do_bp_tests ${src_prefix} ${nest_prefix}
}
}
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