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From: "ppluzhnikov at google dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/13987] jit debug interface fails attaching to pie
 executables
Date: Sat, 13 Oct 2012 03:22:00 -0000
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http://sourceware.org/bugzilla/show_bug.cgi?id=13987

--- Comment #4 from Paul Pluzhnikov <ppluzhnikov at google dot com> 2012-10-13 03:21:57 UTC ---
Just hit this while debugging native process from the start:

cat t.c
void __jit_debug_register_code() { }
int __jit_debug_descriptor[] = { 1, 0, 0, 0, };
int main() { return 0; }

gcc -g -fPIE -pie t.c

gdb
GNU gdb (GDB) 7.5.50.20121013-cvs
...
(gdb) set debug jit 1
(gdb) file ./a.out
Reading symbols from /tmp/a.out...done.
jit_inferior_init
jit_read_descriptor, descriptor_addr = 0x201020
jit_breakpoint_re_set_internal, breakpoint_addr = 0x72c
(gdb) run
Starting program: /tmp/a.out 
Warning:
Cannot insert breakpoint -1.
Error accessing memory address 0x72c: Input/output error.

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