Sorry for not answering quickly.
Thank you for your comments.
I attached a patch to the letter with changes to take into account Daniel
Gustafsson's comment.
Kind regards,
Ian Ilyasov.
Juniour Software Developer at Postgres Professional
Subject: [PATCH] Integer underflow fix in fprintf in dsa.c.
---
Index: src/backend/utils/mmgr/dsa.c
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
diff --git a/src/backend/utils/mmgr/dsa.c b/src/backend/utils/mmgr/dsa.c
--- a/src/backend/utils/mmgr/dsa.c (revision b78fa8547d02fc72ace679fb4d5289dccdbfc781)
+++ b/src/backend/utils/mmgr/dsa.c (date 1708440995707)
@@ -1105,9 +1105,13 @@
{
dsa_segment_index segment_index;
- fprintf(stderr,
- " segment bin %zu (at least %d contiguous pages free):\n",
- i, 1 << (i - 1));
+ if (i == 0)
+ fprintf(stderr,
+ " segment bin %zu (no contiguous free pages):\n", i);
+ else
+ fprintf(stderr,
+ " segment bin %zu (at least %d contiguous pages free):\n",
+ i, 1 << (i - 1));
segment_index = area->control->segment_bins[i];
while (segment_index != DSA_SEGMENT_INDEX_NONE)
{
