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[Bug breakpoints/15360] can't step into function
- From: "dje at google dot com" <sourceware-bugzilla at sourceware dot org>
- To: gdb-prs at sourceware dot org
- Date: Thu, 11 Apr 2013 23:56:44 +0000
- Subject: [Bug breakpoints/15360] can't step into function
- Auto-submitted: auto-generated
- References: <bug-15360-4717 at http dot sourceware dot org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=15360
--- Comment #1 from dje at google dot com 2013-04-11 23:56:44 UTC ---
gdb is putting the step-resume bkpt at the wrong place.
(gdb) disas function
Dump of assembler code for function function():
0x00000000004004b4 <+0>: push %rbp
0x00000000004004b5 <+1>: mov %rsp,%rbp
0x00000000004004b8 <+4>: push %r12
0x00000000004004ba <+6>: push %rbx
0x00000000004004bb <+7>: sub $0x10,%rsp
0x00000000004004bf <+11>: jmp 0x4004c2 <function()+14>
0x00000000004004c1 <+13>: nop
0x00000000004004c2 <+14>: movl $0x0,-0x18(%rbp)
0x00000000004004c9 <+21>: mov -0x18(%rbp),%eax
0x00000000004004cc <+24>: add $0x4,%eax
0x00000000004004cf <+27>: mov %eax,-0x14(%rbp)
0x00000000004004d2 <+30>: mov $0x1,%r12d
0x00000000004004d8 <+36>: mov $0x1,%ebx
0x00000000004004dd <+41>: lea -0x20(%rbp),%rax
0x00000000004004e1 <+45>: mov %rax,%rdi
0x00000000004004e4 <+48>: callq 0x400514 <foo::~foo()>
0x00000000004004e9 <+53>: test %ebx,%ebx
0x00000000004004eb <+55>: je 0x4004c1 <function()+13>
0x00000000004004ed <+57>: mov %r12d,%eax
0x00000000004004f0 <+60>: add $0x10,%rsp
0x00000000004004f4 <+64>: pop %rbx
0x00000000004004f5 <+65>: pop %r12
0x00000000004004f7 <+67>: pop %rbp
0x00000000004004f8 <+68>: retq
End of assembler dump.
...
Temporary breakpoint 2, main (argc=1, argv=0x7fffffffe848) at foo.c:23
23 function();
(gdb) s
infrun: clear_proceed_status_thread (process 20005)
infrun: proceed (addr=0xffffffffffffffff, signal=144, step=1)
infrun: resume (step=1, signal=0), trap_expected=0, current thread [process
20005] at 0x400508
infrun: wait_for_inferior ()
infrun: target_wait (-1, status) =
infrun: 20005 [process 20005],
infrun: status->kind = stopped, signal = SIGTRAP
infrun: infwait_normal_state
infrun: TARGET_WAITKIND_STOPPED
infrun: stop_pc = 0x4004b4
infrun: stepped into subroutine
infrun: inserting step-resume breakpoint at 0x4004c1
infrun: resume (step=0, signal=0), trap_expected=0, current thread [process
20005] at 0x4004b4
infrun: prepare_to_wait
infrun: target_wait (-1, status) =
infrun: 20005 [process 20005],
infrun: status->kind = exited, status = 0
infrun: infwait_normal_state
infrun: TARGET_WAITKIND_EXITED
[Inferior 1 (process 20005) exited normally]
infrun: stop_stepping
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