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From: "Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: Johannes Schindelin <johannes.schindelin@gmx.de>,
	Johannes Schindelin <johannes.schindelin@gmx.de>
Subject: [PATCH 08/11] trace2: avoid "futile conditional"
Date: Thu, 15 May 2025 13:11:46 +0000	[thread overview]
Message-ID: <a3f60183633eb17fb300309cf1a629234588418f.1747314709.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.1891.git.1747314709.gitgitgadget@gmail.com>

From: Johannes Schindelin <johannes.schindelin@gmx.de>

CodeQL reports empty `if` blocks that only contain a comment as "futile
conditional". The comment talks about potential plans to turn this into
a warning, but that seems not to have been necessary. Replace the entire
construct with a concise comment.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
 trace2/tr2_tmr.c | 24 +++++-------------------
 1 file changed, 5 insertions(+), 19 deletions(-)

diff --git a/trace2/tr2_tmr.c b/trace2/tr2_tmr.c
index 51f564b07a40..038181ad9be0 100644
--- a/trace2/tr2_tmr.c
+++ b/trace2/tr2_tmr.c
@@ -102,25 +102,11 @@ void tr2_update_final_timers(void)
 		struct tr2_timer *t_final = &final_timer_block.timer[tid];
 		struct tr2_timer *t = &ctx->timer_block.timer[tid];
 
-		if (t->recursion_count) {
-			/*
-			 * The current thread is exiting with
-			 * timer[tid] still running.
-			 *
-			 * Technically, this is a bug, but I'm going
-			 * to ignore it.
-			 *
-			 * I don't think it is worth calling die()
-			 * for.  I don't think it is worth killing the
-			 * process for this bookkeeping error.  We
-			 * might want to call warning(), but I'm going
-			 * to wait on that.
-			 *
-			 * The downside here is that total_ns won't
-			 * include the current open interval (now -
-			 * start_ns).  I can live with that.
-			 */
-		}
+		/*
+		 * `t->recursion_count` could technically be non-zero, which
+		 * would constitute a bug. Reporting the bug would potentially
+		 * cause an infinite recursion, though, so let's ignore it.
+		 */
 
 		if (!t->interval_count)
 			continue; /* this timer was not used by this thread */
-- 
gitgitgadget


  parent reply	other threads:[~2025-05-15 13:12 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-05-15 13:11 [PATCH 00/11] CodeQL-inspired fixes Johannes Schindelin via GitGitGadget
2025-05-15 13:11 ` [PATCH 01/11] commit: simplify code Johannes Schindelin via GitGitGadget
2025-05-15 19:48   ` Jeff King
2025-05-15 20:37     ` Junio C Hamano
2025-05-15 20:49       ` Jeff King
2025-05-15 13:11 ` [PATCH 02/11] fetch: carefully clear local variable's address after use Johannes Schindelin via GitGitGadget
2025-05-15 19:40   ` Jeff King
2025-05-15 13:11 ` [PATCH 03/11] commit-graph: avoid malloc'ing a local variable Johannes Schindelin via GitGitGadget
2025-05-15 19:54   ` Jeff King
2025-05-15 21:40     ` Junio C Hamano
2025-05-15 13:11 ` [PATCH 04/11] upload-pack: rename `enum` to reflect the operation Johannes Schindelin via GitGitGadget
2025-05-15 19:55   ` Jeff King
2025-05-15 13:11 ` [PATCH 05/11] has_dir_name(): make code more obvious Johannes Schindelin via GitGitGadget
2025-05-15 20:04   ` Jeff King
2025-05-15 13:11 ` [PATCH 06/11] fetch: avoid unnecessary work when there is no current branch Johannes Schindelin via GitGitGadget
2025-05-15 20:11   ` Jeff King
2025-05-15 13:11 ` [PATCH 07/11] Avoid redundant conditions Johannes Schindelin via GitGitGadget
2025-05-15 20:13   ` Jeff King
2025-05-15 13:11 ` Johannes Schindelin via GitGitGadget [this message]
2025-05-15 20:16   ` [PATCH 08/11] trace2: avoid "futile conditional" Jeff King
2025-05-15 13:11 ` [PATCH 09/11] commit-graph: avoid using stale stack addresses Johannes Schindelin via GitGitGadget
2025-05-15 20:19   ` Jeff King
2025-05-15 13:11 ` [PATCH 10/11] bundle-uri: avoid using undefined output of `sscanf()` Johannes Schindelin via GitGitGadget
2025-05-15 19:21   ` Junio C Hamano
2025-05-15 20:25   ` Jeff King
2025-05-16 10:11     ` Phillip Wood
2025-05-16 13:40       ` Phillip Wood
2025-05-16 15:42         ` Jeff King
2025-05-19  9:03           ` Phillip Wood
2025-05-22  6:03             ` Jeff King
2025-05-15 13:11 ` [PATCH 11/11] sequencer: stop pretending that an assignment is a condition Johannes Schindelin via GitGitGadget
2025-05-15 18:51   ` Junio C Hamano
2025-05-15 20:26   ` Jeff King
2025-05-16 10:13   ` Phillip Wood
2025-05-15 20:26 ` [PATCH 00/11] CodeQL-inspired fixes Jeff King
2025-05-15 20:58   ` Junio C Hamano

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