[PATCH v2 1/2] t4205: compare huge output without diff

[Tamir Duberstein <tamird@gmail.com>]

The huge-commit test compares output containing a line larger than 2 GiB.
For two identical files containing 2,147,483,649 "1" bytes followed by
"0\n", GNU diffutils 3.8 on Linux arm64 gives these measurements:

  Command               Mean +/- stddev       Maximum RSS (KiB)
  diff -u expect actual  5.276 +/- 0.572 s              4199924
  cmp expect actual      0.506 +/- 0.099 s                 1264

The test needs only an equality check. Use test_cmp_bin, which runs cmp,
to compare the output byte for byte with less time and memory.

Assisted-by: LLM
Signed-off-by: Tamir Duberstein <tamird@gmail.com>
---
 t/t4205-log-pretty-formats.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/t4205-log-pretty-formats.sh b/t/t4205-log-pretty-formats.sh
index 4be5c51489..01b97c8888 100755
--- a/t/t4205-log-pretty-formats.sh
+++ b/t/t4205-log-pretty-formats.sh
@@ -1189,7 +1189,7 @@ test_expect_success EXPENSIVE,SIZE_T_IS_64BIT 'set up huge commit' '
 test_expect_success EXPENSIVE,SIZE_T_IS_64BIT 'log --pretty with huge commit message' '
 	git log -1 --format="%B%<(1)%x30" $huge_commit >actual &&
 	echo 0 >>expect &&
-	test_cmp expect actual
+	test_cmp_bin expect actual
 '
 
 test_expect_success EXPENSIVE,SIZE_T_IS_64BIT 'log --pretty with huge commit message does not cause allocation failure' '

-- 
2.56.0.rc2.815.g5b995412e4.frankengit