File gdb-testsuite-fix-gdb.dwarf2-dw2-out-of-range-end-of-seq.exp-on-aarch64.patch of Package gdb
[gdb/testsuite] Fix gdb.dwarf2/dw2-out-of-range-end-of-seq.exp on aarch64
On aarch64-linux, with test-case gdb.dwarf2/dw2-out-of-range-end-of-seq.exp I
run into:
...
(gdb) run ^M
Starting program: dw2-out-of-range-end-of-seq ^M
^M
Program received signal SIGILL, Illegal instruction.^M
main () at src/gdb/testsuite/gdb.dwarf2/main.c:1^M
1 /* This testcase is part of GDB, the GNU debugger.^M
(gdb) FAIL: gdb.dwarf2/dw2-out-of-range-end-of-seq.exp: runto: run to main
...
There are two problems here:
- the test-case contains a hardcoded "DW_LNS_advance_pc 1" which causes the
breakpoint pointing in the middle of an insn
- the FAIL triggers on aarch64-linux, but not on x86_64-linux, because the
test-case uses 'main_label' as the address of the first and only valid entry
in the line table, and:
- on aarch64-linux, there's no prologue, so main_label and main coincide,
while
- on x86_64-linux, there's a prologue, so main_label is different from main.
Fix these problems by:
- eliminating the use of "DW_LNS_advance_pc 1", and using
"DW_LNE_set_address $main_end" instead, and
- eliminating the use of main_label, using "DW_LNE_set_address $main_start"
instead.
Tested on both x86_64-linux and aarch64-linux.
---
gdb/testsuite/gdb.dwarf2/dw2-out-of-range-end-of-seq.exp | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-out-of-range-end-of-seq.exp b/gdb/testsuite/gdb.dwarf2/dw2-out-of-range-end-of-seq.exp
index f60f622067e..749755fc771 100644
--- a/gdb/testsuite/gdb.dwarf2/dw2-out-of-range-end-of-seq.exp
+++ b/gdb/testsuite/gdb.dwarf2/dw2-out-of-range-end-of-seq.exp
@@ -35,10 +35,16 @@ if !$gcc_compiled {
standard_testfile main.c -dw.S
+set func_info_vars [get_func_info main]
+
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
declare_labels Llines
global srcdir subdir srcfile
+ global func_info_vars
+ foreach var $func_info_vars {
+ global $var
+ }
cu {} {
compile_unit {
@@ -48,7 +54,9 @@ Dwarf::assemble $asm_file {
} {
subprogram {
{external 1 flag}
- {MACRO_AT_func {main}}
+ {name main}
+ {low_pc $main_start}
+ {high_pc $main_end addr}
}
}
}
@@ -58,11 +66,11 @@ Dwarf::assemble $asm_file {
file_name "$srcfile" 1
program {
- {DW_LNE_set_address main_label}
+ {DW_LNE_set_address $main_start}
{line 1}
{DW_LNS_copy}
- {DW_LNS_advance_pc 1}
+ {DW_LNE_set_address $main_end}
{DW_LNE_end_sequence}
{DW_LNE_set_address 0}