[gdb/testsuite] Fix gdb.base/consecutive.exp with gcc-8
When running test-case gdb.base/consecutive.exp with gcc-8 instead of gcc-7, we get: ... (gdb) step^M ^M -Breakpoint 3, 0x00000000004004b1 in foo () at consecutive.c:10^M +Breakpoint 3, foo () at consecutive.c:10^M 10 return a[0] + a[1] + a[2] + a[3] + a[4] + a[5] + a[6];^M -(gdb) PASS: gdb.base/consecutive.exp: stopped at bp, 2nd instr +(gdb) FAIL: gdb.base/consecutive.exp: stopped at bp, 2nd instr ... This is due to the fact that gcc-8 generates more precise line info, making the breakpoint address a "recommended breakpoint location", and consequently gdb doesn't print the address prefix anymore. Fix the FAIL by checking in the test-case whether the breakpoint address is at "recommended breakpoint location" or not. gdb/testsuite/ChangeLog: 2020-05-06 Tom de Vries <tdevries@suse.de> * lib/gdb.exp (is_stmt_addresses, hex_in_list): New proc, factored out of ... * gdb.base/async.exp: ... here. * gdb.base/consecutive.exp: Handle if 2nd breakpoint is at a "recommended breakpoint location".
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@ -1,3 +1,11 @@
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2020-05-06 Tom de Vries <tdevries@suse.de>
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* lib/gdb.exp (is_stmt_addresses, hex_in_list): New proc, factored out
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of ...
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* gdb.base/async.exp: ... here.
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* gdb.base/consecutive.exp: Handle if 2nd breakpoint is at a
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"recommended breakpoint location".
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2020-05-06 Tom de Vries <tdevries@suse.de>
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* gdb.compile/compile-ifunc.exp: Use -Wno-attribute-alias.
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@ -79,16 +79,7 @@ test_background "step&" "" ".*y = foo \\(\\).*" "step& #1"
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test_background "step&" "" " foo \\(\\) at .*async.c.*x = 5.*" "step& #2"
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set is_stmt [list]
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gdb_test_multiple "maint info line-table async.c" "" {
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-re "\r\n$decimal\[ \t\]+$decimal\[ \t\]+($hex)\[ \t\]+Y\[^\r\n\]*" {
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lappend is_stmt $expect_out(1,string)
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exp_continue
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}
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-re -wrap "" {
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pass $gdb_test_name
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}
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}
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set is_stmt [is_stmt_addresses $srcfile]
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# Get the next instruction address.
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set next_insn_addr ""
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@ -99,8 +90,7 @@ gdb_test_multiple {x/2i $pc} "$test" {
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pass "$test"
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}
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}
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set next_insn_is_stmt \
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[expr [lsearch -regexp $is_stmt 0x0*$next_insn_addr] != -1]
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set next_insn_is_stmt [hex_in_list $next_insn_addr $is_stmt]
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if { $next_insn_is_stmt } {
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set prefix ""
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@ -35,6 +35,8 @@ if ![runto_main] then {
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continue
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}
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set is_stmt [is_stmt_addresses $srcfile]
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set nl "\[\r\n\]+"
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gdb_breakpoint foo
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@ -55,7 +57,7 @@ gdb_test "break \*$bp_addr" "Breakpoint $decimal at $bp_addr: file .*" \
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"set bp, 2nd instr"
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gdb_test_multiple "step" "stopped at bp, 2nd instr" {
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-re "Breakpoint $decimal, ($hex) in foo.*$gdb_prompt $" {
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-re -wrap "Breakpoint $decimal, ($hex) in foo.*" {
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set stop_addr $expect_out(1,string)
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if [eval expr "$bp_addr == $stop_addr"] then {
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pass "stopped at bp, 2nd instr"
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@ -63,5 +65,16 @@ gdb_test_multiple "step" "stopped at bp, 2nd instr" {
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fail "stopped at bp, 2nd instr (wrong address)"
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}
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}
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-re -wrap "Breakpoint $decimal, foo.*" {
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set stop_addr [get_valueof "/x" "\$pc" "" "value of pc"]
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set stop_addr_is_stmt [hex_in_list $stop_addr $is_stmt]
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if { ! $stop_addr_is_stmt } {
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fail "stopped at bp, 2nd instr (missing hex prefix)"
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} elseif [eval expr "$bp_addr == $stop_addr"] then {
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pass "stopped at bp, 2nd instr"
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} else {
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fail "stopped at bp, 2nd instr (wrong address)"
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}
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}
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}
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@ -7136,5 +7136,37 @@ proc debug_types { } {
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return 0
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}
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# Return the addresses in the line table for FILE for which is_stmt is true.
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proc is_stmt_addresses { file } {
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global decimal
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global hex
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set is_stmt [list]
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gdb_test_multiple "maint info line-table $file" "" {
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-re "\r\n$decimal\[ \t\]+$decimal\[ \t\]+($hex)\[ \t\]+Y\[^\r\n\]*" {
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lappend is_stmt $expect_out(1,string)
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exp_continue
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}
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-re -wrap "" {
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}
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}
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return $is_stmt
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}
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# Return 1 if hex number VAL is an element of HEXLIST.
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proc hex_in_list { val hexlist } {
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# Normalize val by removing 0x prefix, and leading zeros.
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set val [regsub ^0x $val ""]
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set val [regsub ^0+ $val "0"]
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set re 0x0*$val
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set index [lsearch -regexp $hexlist $re]
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return [expr $index != -1]
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}
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# Always load compatibility stuff.
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load_lib future.exp
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