[contrib] validate_failures.py: Don't consider summary line in wrong place

When parsing a summary or manifest file, if we're not either after a tool
line (e.g. "=== gdb tests ===") or before a summary line (e.g.,
"=== gdb Summary ===") then the current line can't be a valid result line
so ignore it.

This addresses a problem we're seeing when running the GDB testsuite in
our CI environment where it produces a valid summary file, but then after
the "=== gdb Summary ===" section it outputs a series of Tcl errors that
match _VALID_TEST_RESULTS_REX and thus confuse the parsing logic:

05: 14:32 .sum file seems to be broken: tool="None", exp="None", summary_line="ERROR: -------------------------------------------"
05: 14:32 Traceback (most recent call last):
05: 14:32   File "/path/to/gcc/contrib/testsuite-management/validate_failures.py", line 706, in <module>
05: 14:32     retval = Main(sys.argv)
05: 14:32   File "/path/to/gcc/contrib/testsuite-management/validate_failures.py", line 697, in Main
05: 14:32     retval = CheckExpectedResults()
05: 14:32   File "/path/to/gcc/contrib/testsuite-management/validate_failures.py", line 572, in CheckExpectedResults
05: 14:32     actual = GetResults(sum_files)
05: 14:32   File "/path/to/gcc/contrib/testsuite-management/validate_failures.py", line 447, in GetResults
05: 14:32     build_results.update(ParseSummary(sum_fname))
05: 14:32   File "/path/to/gcc/contrib/testsuite-management/validate_failures.py", line 389, in ParseSummary
05: 14:32     result = result_set.MakeTestResult(line, ordinal)
05: 14:32   File "/path/to/gcc/contrib/testsuite-management/validate_failures.py", line 236, in MakeTestResult
05: 14:32     return TestResult(summary_line, ordinal,
05: 14:32   File "/path/to/gcc/contrib/testsuite-management/validate_failures.py", line 148, in __init__
05: 14:32     raise

contrib/ChangeLog:

	* testsuite-management/validate_failures.py (IsInterestingResult):
	Add result_set argument and use it.  Adjust callers.

1 files changed, 14 insertions, 4 deletions

diff --git a/contrib/testsuite-management/validate_failures.py b/contrib/testsuite-management/validate_failures.py
index 4dfd9cd..11bb6f7 100755
--- a/contrib/testsuite-management/validate_failures.py
+++ b/contrib/testsuite-management/validate_failures.py
@@ -295,10 +295,20 @@ def SplitAttributesFromSummaryLine(line):
   return (attrs, line)
 
 
-def IsInterestingResult(line):
+def IsInterestingResult(result_set, line):
   """Return True if line is one of the summary lines we care about."""
   (_, line) = SplitAttributesFromSummaryLine(line)
-  return bool(_VALID_TEST_RESULTS_REX.match(line))
+  valid_result = bool(_VALID_TEST_RESULTS_REX.match(line))
+
+  # If there's no tool defined it means that either the results section hasn't
+  # started yet, or it is already over.
+  if valid_result and result_set.current_tool is None:
+    if _OPTIONS.verbosity >= 3:
+      print(f'WARNING: Result "{line}" found outside sum file boundaries.',
+            file=sys.stderr)
+    return False
+
+  return valid_result
 
 
 def IsToolLine(line):
@@ -354,7 +364,7 @@ def ParseManifestWorker(result_set, manifest_path):
       result_set.remove(result_set.MakeTestResult(GetNegativeResult(line)))
     elif IsInclude(line):
       ParseManifestWorker(result_set, GetIncludeFile(line, manifest_path))
-    elif IsInterestingResult(line):
+    elif IsInterestingResult(result_set, line):
       result = result_set.MakeTestResult(line)
       if result.HasExpired():
         # Ignore expired manifest entries.
@@ -391,7 +401,7 @@ def ParseSummary(sum_fname):
   ordinal=0
   sum_file = open(sum_fname, encoding='latin-1', mode='r')
   for line in sum_file:
-    if IsInterestingResult(line):
+    if IsInterestingResult(result_set, line):
       result = result_set.MakeTestResult(line, ordinal)
       ordinal += 1
       if result.HasExpired():