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authorFlorian Weimer <fweimer@redhat.com>2020-05-13 16:45:29 +0200
committerFlorian Weimer <fweimer@redhat.com>2020-05-13 16:48:26 +0200
commiteca1b233322914d9013f3ee4aabecaadc9245abd (patch)
tree126995ad6720860662708debff842e46d46e79e2 /string
parentad78d702757a189b1fa552d607e8aaa22252a45f (diff)
downloadglibc-eca1b233322914d9013f3ee4aabecaadc9245abd.tar.gz
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arm: XFAIL string/tst-memmove-overflow due to bug 25620
Also reduce the amount of output in case of a large-scale mismatch in
the copied data.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'string')
-rw-r--r--string/tst-memmove-overflow.c23
1 files changed, 21 insertions, 2 deletions
diff --git a/string/tst-memmove-overflow.c b/string/tst-memmove-overflow.c
index b744679ef4..77d693d0dd 100644
--- a/string/tst-memmove-overflow.c
+++ b/string/tst-memmove-overflow.c
@@ -57,6 +57,25 @@ expected_value (size_t index)
   return randomized >> 25;	/* Result is in the range [0, 127].  */
 }
 
+/* Used to count mismatches up to a limit, to avoid creating a huge
+   test output file.  */
+static unsigned int mismatch_count;
+
+/* Check ACTUAL == EXPECTED.  Use INDEX for error reporting.  Exit the
+   process after too many errors.  */
+static inline void
+check_one_index (size_t index, unsigned char actual, unsigned char expected)
+{
+  if (actual != expected)
+    {
+      printf ("error: mismatch at index %zu: expected 0x%02x, got 0x%02x\n",
+	      index, actual, expected);
+      ++mismatch_count;
+      if (mismatch_count > 200)
+	FAIL_EXIT1 ("bailing out due to too many errors");
+    }
+}
+
 static int
 test_main (void)
 {
@@ -138,13 +157,13 @@ test_main (void)
 			 start + allocation_size - sizeof (expected_end) - 1,
 			 sizeof (expected_end));
       for (size_t i = 0; i < unshared_size - 1; ++i)
-	TEST_COMPARE (start[i], expected_value (i + 1));
+	check_one_index (i, start[i], expected_value (i + 1));
       /* The gap between the checked start and end area of the mapping
 	 has shared mappings at unspecified boundaries, so do not
 	 check the expected values in the middle.  */
       for (size_t i = allocation_size - unshared_size; i < allocation_size - 1;
 	   ++i)
-	TEST_COMPARE (start[i], expected_value (i + 1));
+	check_one_index (i, start[i], expected_value (i + 1));
 
       support_blob_repeat_free (&repeat);
     }