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[PATCH] Fix http://sourceware.org/bugzilla/show_bug.cgi?id=14550
- From: Sanjoy Das <sanjoy at playingwithpointers dot com>
- To: gdb-patches at sourceware dot org
- Cc: Sanjoy Das <sanjoy at playingwithpointers dot com>
- Date: Thu, 6 Sep 2012 22:09:45 +0530
- Subject: [PATCH] Fix http://sourceware.org/bugzilla/show_bug.cgi?id=14550
The JIT reader interface is currently broken -- gdb segfaults on backtracing through JITted frames. This patch fixes the issue.
--
Sanjoy
---
gdb/ChangeLog | 7 +++++++
gdb/jit.c | 14 ++++++++++++--
2 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 05b3142..48e2631 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,10 @@
+2012-09-06 Sanjoy Das <sanjoy@playingwithpointers.com>
+
+ PR gdb/14550
+
+ * jit.c (finalize_symtab): Ensure that only the global block has a
+ NULL superblock.
+
2012-09-02 Khoo Yit Phang <khooyp@cs.umd.edu>
Do not enable -lmcheck by default when Python is enabled with
diff --git a/gdb/jit.c b/gdb/jit.c
index 9e8f295..2f9d426 100644
--- a/gdb/jit.c
+++ b/gdb/jit.c
@@ -724,8 +724,18 @@ finalize_symtab (struct gdb_symtab *stab, struct objfile *objfile)
gdb_block_iter = gdb_block_iter->next)
{
if (gdb_block_iter->parent != NULL)
- BLOCK_SUPERBLOCK (gdb_block_iter->real_block) =
- gdb_block_iter->parent->real_block;
+ {
+ /* If the plugin specifically mentioned a parent block, we
+ use that */
+ BLOCK_SUPERBLOCK (gdb_block_iter->real_block) =
+ gdb_block_iter->parent->real_block;
+ }
+ else
+ {
+ /* and if not, we set a default parent block. */
+ BLOCK_SUPERBLOCK (gdb_block_iter->real_block) =
+ BLOCKVECTOR_BLOCK (symtab->blockvector, STATIC_BLOCK);
+ }
}
/* Free memory. */
--
1.7.10.4