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From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
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From: Fedora GDB patches <invalid@email.com>
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Date: Fri, 27 Oct 2017 21:07:50 +0200
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Subject: gdb-follow-child-stale-parent.patch
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FileName: gdb-follow-child-stale-parent.patch
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;; Fix regression by python on ia64 due to stale current frame.
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;;=push+jan
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0911f37 |
Problem occurs with python and its get_current_arch () as it selects
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selected_frame and current_frame while still inferior_ptid is valid for the
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original parent. But since this place it is already attached and later
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unwinders try to access it, breaking:
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-PASS: gdb.threads/watchpoint-fork.exp: child: singlethreaded: breakpoint after the first fork
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-PASS: gdb.threads/watchpoint-fork.exp: child: singlethreaded: watchpoint after the first fork
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-PASS: gdb.threads/watchpoint-fork.exp: child: singlethreaded: breakpoint after the second fork
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-PASS: gdb.threads/watchpoint-fork.exp: child: singlethreaded: watchpoint after the second fork
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-PASS: gdb.threads/watchpoint-fork.exp: child: singlethreaded: finish
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+FAIL: gdb.threads/watchpoint-fork.exp: child: singlethreaded: breakpoint after the first fork
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+FAIL: gdb.threads/watchpoint-fork.exp: child: singlethreaded: watchpoint after the first fork
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+FAIL: gdb.threads/watchpoint-fork.exp: child: singlethreaded: breakpoint after the second fork
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+FAIL: gdb.threads/watchpoint-fork.exp: child: singlethreaded: watchpoint after the second fork
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+FAIL: gdb.threads/watchpoint-fork.exp: child: singlethreaded: finish
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f637971 |
---
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gdb/infrun.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/gdb/infrun.c b/gdb/infrun.c
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index 9b7b238f4d..91d6004d0a 100644
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--- a/gdb/infrun.c
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+++ b/gdb/infrun.c
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@@ -749,6 +749,9 @@ follow_fork (void)
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}
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else
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{
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+ /* Possibly referenced PARENT is no longer valid. */
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+ reinit_frame_cache ();
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+
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/* This pending follow fork event is now handled, one way
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or another. The previous selected thread may be gone
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from the lists by now, but if it is still around, need
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f637971 |
--
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2.14.3
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