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# Copyright 1997-2021 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
# 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 <>.
# Test that things still (sort of) work when compiled without -g.
standard_testfile .c
if [get_compiler_info] {
return -1
if [test_compiler_info "xlc-*"] {
# By default, IBM'x xlc compiler doesn't add static variables into the symtab.
# Use "-qstatsym" to do so.
set exec_opts additional_flags=-qstatsym
} else {
set exec_opts ""
if { [gdb_compile $srcdir/$subdir/$srcfile $binfile executable $exec_opts] != "" } {
untested "failed to compile"
return -1
# Start with a fresh gdb.
clean_restart $binfile
# Run to FUNC and unload symbols from system shared libraries, to
# avoid conflicts with the minsyms in the program. E.g.,
# intl/plural-exp.h has 'enum expression_operator {..., mult, ...}'.
proc nodebug_runto {func} {
with_test_prefix $func {
if ![runto $func] {
return false
gdb_test_no_output "nosharedlibrary" \
"unload symbols from system libraries"
return true
# Test calling no-debug functions involving argument types that may
# require coercion/promotion, both prototyped and unprototyped, both
# return-type-cast style, and function-pointer-cast styles.
proc test_call_promotion {} {
if [target_info exists gdb,cannot_call_functions] {
# Call prototyped function with float parameters via both
# return-type cast and function-pointer cast. This checks that
# GDB doesn't do float->double coercion.
gdb_test "p (float) multf(2.0f, 3.0f)" " = 6"
gdb_test "p ((float (*) (float, float)) multf)(2, 3)" " = 6"
gdb_test "p ((float (*) (float, float)) multf)(2.0f, 3.0f)" " = 6"
# Call unprototyped function with float parameters via
# function-pointer cast, only. return-type cast assumes
# protototyped. Check that GDB does float->double coercion.
gdb_test "p ((float (*) ()) multf_noproto)(2.0f, 3.0f)" " = 6"
gdb_test "p ((float (*) ()) multf_noproto)(2.0, 3.0)" " = 6"
# Same, but for double.
gdb_test "p (double) mult (2.0, 3.0)" " = 6"
gdb_test "p ((double (*) (double, double)) mult)(2.0f, 3.0f)" " = 6"
gdb_test "p ((double (*) (double, double)) mult)(2, 3)" " = 6"
gdb_test "p ((double (*) ()) mult_noproto)(2.0f, 3.0f)" " = 6"
gdb_test "p ((double (*) ()) mult_noproto)(2.0, 3.0)" " = 6"
# Check that GDB promotes char->int correctly.
gdb_test "p /d (uint8) add8((uint8) 2, (uint8) 3)" " = 5"
gdb_test "p /d ((uint8 (*) (uint8, uint8)) add8)((uint8) 2, (uint8) 3)" " = 5"
gdb_test "p /d ((uint8 (*) ()) add8_noproto)((uint8) 2, (uint8) 3)" " = 5"
if [nodebug_runto inner] then {
# Expect to find global/local symbols in each of text/data/bss.
# The exact format for some of this output is not necessarily
# ideal, particularly interpreting "p top" requires a fair bit of
# savvy about gdb's workings and the meaning of the "{}"
# construct. So the details maybe could be tweaked. But the
# basic purpose should be maintained, which is (a) users should be
# able to interact with these variables with some care (they have
# to know how to interpret them according to their real type,
# since gdb doesn't know the type), but (b) users should be able
# to detect that gdb does not know the type, rather than just
# being told they are ints or functions returning int like old
# versions of gdb used to do.
# On alpha (and other ecoff systems) the native compilers put
# out debugging info for non-aggregate return values of functions
# even without -g, which should be accepted.
with_test_prefix "func" {
# Most languages default to printing like C.
set c_print_re " = \\{<text variable, no debug info>\\} $hex <top>"
set c_whatis_re " = <text variable, no debug info>"
set c_ptype_re "= <unknown return type> \\(\\)"
set cxx_ptype_re "= <unknown return type> \\(void\\)"
set ada_ptype_re " = function return <unknown return type>"
set m2_print_re " = \\{PROCEDURE <text variable, no debug info> \\(\\) : <unknown return type>\\} $hex <top>"
set m2_whatis_re "PROCEDURE <text variable, no debug info> \\(\\) : <unknown return type>"
set m2_ptype_re $m2_whatis_re
# Rust can't access minsyms?
set rust_nosym "No symbol 'top' in current context"
set pascal_ptype_re "type = procedure : <unknown return type>"
foreach lang_line {
{"ada" $c_print_re $c_whatis_re $ada_ptype_re}
{"asm" $c_print_re $c_whatis_re $c_ptype_re}
{"c" $c_print_re $c_whatis_re $c_ptype_re}
{"c++" $c_print_re $c_whatis_re $cxx_ptype_re}
{"d" $c_print_re $c_whatis_re $c_ptype_re}
{"fortran" $c_print_re $c_whatis_re $c_ptype_re}
{"go" $c_print_re $c_whatis_re $c_ptype_re}
{"minimal" $c_print_re $c_whatis_re $c_ptype_re}
{"modula-2" $m2_print_re $m2_whatis_re $m2_ptype_re}
{"objective-c" $c_print_re $c_whatis_re $c_ptype_re}
{"opencl" $c_print_re $c_whatis_re $c_ptype_re}
{"pascal" $c_print_re $c_whatis_re $pascal_ptype_re}
{"rust" $rust_nosym $rust_nosym $rust_nosym}
} {
set lang [lindex $lang_line 0]
set print_re [lindex $lang_line 1]
set whatis_re [lindex $lang_line 2]
set ptype_re [lindex $lang_line 3]
set print_re [subst "$print_re"]
set whatis_re [subst "$whatis_re"]
set ptype_re [subst "$ptype_re"]
with_test_prefix "$lang" {
gdb_test_no_output "set language $lang"
gdb_test "p top" $print_re
gdb_test "whatis top" $whatis_re
gdb_test "ptype top" $ptype_re
gdb_test_no_output "set language auto"
# We can't rely on uintXX_t being available/known to GDB because
# we may or may not have debug info for those (depending on
# whether we have debug info for the C runtime, for example).
gdb_test_no_output "macro define uint8 unsigned char"
gdb_test_no_output "macro define uint32 unsigned int"
gdb_test_no_output "macro define uint64 unsigned long long"
set data_var_type "<data variable, no debug info>"
set unk_type_re "has unknown type.*to its declared type"
set ptr_math_re "Cannot perform pointer math on incomplete type \"$data_var_type\", try casting to a known type, or void \\*\\."
set not_mem_re "Attempt to take address of value not located in memory\\."
set dataglobal_unk_re "dataglobal.*$unk_type_re"
#exp #fmt #print #ptype/whatis
foreach line {
{"dataglobal" "" $dataglobal_unk_re " = $data_var_type"}
{"(int) dataglobal" "" "= 3" " = int"}
{"sizeof(dataglobal)" "" $dataglobal_unk_re $dataglobal_unk_re}
{"sizeof(dataglobal + 1)" "" $dataglobal_unk_re $dataglobal_unk_re}
{"sizeof((int) dataglobal)" "" " = $decimal" " = int"}
{"dataglobal + 1" "" $dataglobal_unk_re $dataglobal_unk_re}
{"&dataglobal" "" "\\($data_var_type \\*\\) $hex <dataglobal>" " = $data_var_type \\*"}
{"&dataglobal + 1" "" $ptr_math_re $ptr_math_re}
{"(int *) &dataglobal + 1" "" " = \\(int \\*\\) $hex <datalocal>" "int \\*"}
{"&(int) dataglobal + 1" "" $not_mem_re $not_mem_re}
{"&dataglobal, &dataglobal" "" "\\($data_var_type \\*\\) $hex <dataglobal>" " = $data_var_type \\*"}
{"*dataglobal" "" $dataglobal_unk_re $dataglobal_unk_re}
{"dataglobal8" "/x" $dataglobal_unk_re " = $data_var_type"}
{"(uint8) dataglobal8" "/x" " = 0xff" "unsigned char"}
{"dataglobal32_1" "/x" $dataglobal_unk_re " = $data_var_type"}
{"(uint32) dataglobal32_1" "/x" " = 0x7fffffff" "unsigned int"}
{"dataglobal32_2" "/x" $dataglobal_unk_re " = $data_var_type"}
{"(uint32) dataglobal32_2" "/x" " = 0xff" "unsigned int"}
{"dataglobal64_1" "/x" $dataglobal_unk_re " = $data_var_type"}
{"(uint64) dataglobal64_1" "/x" " = 0x7fffffffffffffff" "unsigned long long"}
{"dataglobal64_2" "/x" $dataglobal_unk_re " = $data_var_type"}
{"(uint64) dataglobal64_2" "/x" " = 0xff" "unsigned long long"}
} {
set exp [lindex $line 0]
# Expand variables.
set fmt [subst -nobackslashes [lindex $line 1]]
set print [subst -nobackslashes [lindex $line 2]]
set whatis [subst -nobackslashes [lindex $line 3]]
if {$fmt == ""} {
gdb_test "p $exp" $print
} else {
gdb_test "p $fmt $exp" $print
gdb_test "whatis $exp" $whatis
gdb_test "ptype $exp" $whatis
# The only symbol xcoff puts out for statics is for the TOC entry.
# Possible, but hairy, for gdb to deal. Right now it doesn't, it
# doesn't know the variables exist at all.
setup_xfail "rs6000*-*-aix*"
setup_xfail "powerpc*-*-aix*"
gdb_test "p datalocal" "datalocal.*$unk_type_re"
gdb_test "p (int) datalocal" "= 4"
setup_xfail "rs6000*-*-aix*"
setup_xfail "powerpc*-*-aix*"
gdb_test "whatis datalocal" "datalocal.*$data_var_type"
setup_xfail "rs6000*-*-aix*"
setup_xfail "powerpc*-*-aix*"
gdb_test "ptype datalocal" "datalocal.*$data_var_type"
gdb_test "p bssglobal" "bssglobal.*$unk_type_re"
gdb_test "p (int) bssglobal" "= 0"
gdb_test "whatis bssglobal" $data_var_type
gdb_test "ptype bssglobal" $data_var_type
setup_xfail "rs6000*-*-aix*"
setup_xfail "powerpc*-*-aix*"
gdb_test "p bsslocal" "bsslocal.*$unk_type_re"
gdb_test "p (int) bsslocal" "= 0"
setup_xfail "rs6000*-*-aix*"
setup_xfail "powerpc*-*-aix*"
gdb_test "whatis bsslocal" $data_var_type
setup_xfail "rs6000*-*-aix*"
setup_xfail "powerpc*-*-aix*"
gdb_test "ptype bsslocal" $data_var_type
gdb_test "backtrace 10" "#0.*inner.*#1.*middle.*#2.*top.*#3.*main.*" \
"backtrace from inner in nodebug.exp"
# Or if that doesn't work, at least hope for the external symbols
# Commented out because if we aren't going to xfail the above test
# ever, why bother with a weaker test?
#gdb_test "backtrace 10" "#0.*inner.*#1.*#2.*top.*#3.*main.*" \
# "backtrace from inner in nodebug.exp for externals"
# This test is not as obscure as it might look. `p getenv ("TERM")'
# is a real-world example, at least on many systems.
foreach cmd {"p/c" "ptype" "whatis"} {
gdb_test "$cmd array_index(\"abcdef\",2)" \
"'array_index' has unknown return type; cast the call to its declared return type"
if [target_info exists gdb,cannot_call_functions] {
unsupported "p/c (int) array_index(\"abcdef\",2)"
} else {
# We need to up this because this can be really slow on some boards.
# (malloc() is called as part of the test).
set prev_timeout $timeout
set timeout 60
gdb_test {p/c (int) array_index("abcdef",2)} " = 99 'c'"
set timeout $prev_timeout
# Now, try that we can give names of file-local symbols which happen
# to be unique, and have it still work
if [nodebug_runto middle] then {
gdb_test "backtrace 10" "#0.*middle.*#1.*top.*#2.*main.*" \
"backtrace from middle in nodebug.exp"