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[Bug symtab/15274] New: add-symbol-file loads symbols at wrongaddress
- From: "ehunter at broadcom dot com" <sourceware-bugzilla at sourceware dot org>
- To: gdb-prs at sourceware dot org
- Date: Wed, 13 Mar 2013 05:53:26 +0000
- Subject: [Bug symtab/15274] New: add-symbol-file loads symbols at wrongaddress
- Auto-submitted: auto-generated
http://sourceware.org/bugzilla/show_bug.cgi?id=15274
Bug #: 15274
Summary: add-symbol-file loads symbols at wrong address
Product: gdb
Version: 7.5
Status: NEW
Severity: normal
Priority: P2
Component: symtab
AssignedTo: unassigned@sourceware.org
ReportedBy: ehunter@broadcom.com
Classification: Unclassified
Created attachment 6933
--> http://sourceware.org/bugzilla/attachment.cgi?id=6933
Demonstration code
I have found that GDB loads symbols at the wrong addresses in the following
case:
An ELF file loaded using the command "add-symbol-file xxx.elf 0" where:
* .text is not at address zero
* There is another ELF section at a starting at a non-zero address that is
lower than the .text address.
The symbols are incorrectly offset from the correct locations by the start
address of the lower section.
The attached code demonstrates the problem. Simply unzip and run make.
Below is a patch that fixes the problem by commenting out the offending
function call that incorrectly offsets the ELF symbols.
diff -Naur gdb-7.4/gdb/gdb/symfile.c gdb-7.4-new/gdb/symfile.c
--- gdb-7.4/gdb/symfile.c 2013-03-13 13:12:25 +1100
+++ gdb-7.4-new/gdb/symfile.c 2013-03-13 13:11:54 +1100
@@ -986,8 +986,8 @@
We no longer warn if the lowest section is not a text segment (as
happens for the PA64 port. */
- if (addrs && addrs->other[0].name)
- addr_info_make_relative (addrs, objfile->obfd);
+// if (addrs && addrs->other[0].name)
+// addr_info_make_relative (addrs, objfile->obfd);
/* Initialize symbol reading routines for this objfile, allow complaints to
appear for this new file, and record how verbose to be, then do the
--
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