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gdb/testsuite: add max number of instructions check in gdb.base/unwind-on-each-insn.exp

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This test sends my CI in an infinite loop of failures.   We expect to
have a handful of iterations (5 on my development machine, where the
test passes fine)but the log shows that it went up to 104340 iterations:

    FAIL: gdb.base/unwind-on-each-insn.exp - instruction 104340: maint print frame-id
    DUPLICATE: gdb.base/unwind-on-each-insn.exp - instruction 104340: maint print frame-id
    FAIL: gdb.base/unwind-on-each-insn.exp - instruction 104340: [string equal $fid $main_fid]
    FAIL: gdb.base/unwind-on-each-insn.exp - instruction 104340: get hexadecimal valueof "$pc"

Add a max instruction check, exit the loop if we reach 100 iterations.
This should allow the test to fail fast if there's a problem, but 100
iterations should be more than enough for when things are working.

Change-Id: I77978d593aca046068f9209272d82e1675ba17c2
This commit is contained in:
Simon Marchi
2022-10-21 23:58:15 -04:00
parent 095e74caa7
commit 49c843e6d2
1 changed files with 7 additions and 0 deletions
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7
gdb/testsuite/gdb.base/unwind-on-each-insn.exp
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@ -149,6 +149,13 @@ for { set i_count 1 } { true } { incr i_count } {
break break
} }
if { $i_count > 100 } {
# We expect a handful of instructions, if we reach 100,
# something is going wrong. Avoid an infinite loop.
fail "exceeded max number of instructions"
break
}
gdb_test "stepi" ".*" gdb_test "stepi" ".*"
} }
} }