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From: WANG Rui <r@hev.cc>
To: gdb-patches@sourceware.org
Cc: Lancelot SIX <lancelot.six@amd.com>, WANG Rui <r@hev.cc>
Subject: [PATCH] gdb: Fix false match issue in skip_prologue_using_linetable
Date: Tue, 18 Apr 2023 00:24:28 +0800	[thread overview]
Message-ID: <20230417162428.48426-1-r@hev.cc> (raw)

We should exclude matches to the ending PC to prevent false matches with the
next function, as prologue_end is located at the end PC.

  <fun1>:
    0x00: ... <-- start_pc
    0x04: ...
    0x08: ... <-- breakpoint
    0x0c: ret
  <fun2>:
    0x10: ret <-- end_pc | prologue_end of fun2
---
 gdb/symtab.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gdb/symtab.c b/gdb/symtab.c
index f2b1a14e006..a662d7d1869 100644
--- a/gdb/symtab.c
+++ b/gdb/symtab.c
@@ -3735,7 +3735,7 @@ skip_prologue_using_linetable (CORE_ADDR func_addr)
 	 });
 
       for (;
-	   it < linetable->item + linetable->nitems && it->pc <= end_pc;
+	   it < linetable->item + linetable->nitems && it->pc < end_pc;
 	   it++)
 	if (it->prologue_end)
 	  return {it->pc};
-- 
2.40.0


             reply	other threads:[~2023-04-17 16:24 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-17 16:24 WANG Rui [this message]
2023-04-17 17:38 ` Keith Seitz
2023-04-18  2:26   ` hev
2023-04-18  8:43     ` Tom de Vries
2023-04-18  9:59       ` hev
2023-04-17 21:12 ` Lancelot SIX
2023-04-18  2:26   ` hev
2023-04-22  8:36 ` Tom de Vries
2023-04-23  1:24   ` hev

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