[gdb/testsuite] Fix gdb.dwarf2/dw2-fixed-point.exp on arm-linux

With test-case gdb.dwarf2/dw2-fixed-point.exp on arm-linux I run into:
...
(gdb) PASS: gdb.dwarf2/dw2-fixed-point.exp: set lang ada
print pck.fp1_var^M
$1 = 0.3125^M
(gdb) FAIL: gdb.dwarf2/dw2-fixed-point.exp: print pck.fp1_var
...

The problem is that the thumb prologue analyzer overshoot, setting the
breakpoint for main after line 49:
...
    46  int
    47  main (void)
    48  {
    49    pck__fp1_var++;
...
and consequently we see the value of pck.fp1_var after line 49 instead of
before line 49.  This is PR tdep/31981.

Work around this by removing line 49 and all similar subsequent lines, which
turn out to be dead code.

Approved-By: Luis Machado <luis.machado@arm.com>
Tested on arm-linux.

diff --git a/gdb/testsuite/gdb.dwarf2/dw2-fixed-point.c b/gdb/testsuite/gdb.dwarf2/dw2-fixed-point.c
index 58b97caf05510e80bcf5873dabfa9e5a2d63e3b4..2789e6ac0fb0f3b6e8457257ac61d6c0d981ac0e 100644 (file)
--- a/gdb/testsuite/gdb.dwarf2/dw2-fixed-point.c
+++ b/gdb/testsuite/gdb.dwarf2/dw2-fixed-point.c
@@ -46,11 +46,5 @@ int8_t pck__fp1_range_var = 16;
 int
 main (void)
 {
-  pck__fp1_var++;
-  pck__fp1_var2++;
-  pck__fp2_var++;
-  pck__fp3_var++;
-  pck__fp1_range_var++;
-
   return 0;
 }