[Issue 21770] Wrong breakpoint location for gdb
d-bugmail at puremagic.com
d-bugmail at puremagic.com
Sun Apr 18 20:41:26 UTC 2021
https://issues.dlang.org/show_bug.cgi?id=21770
LucienPe <lucien.perregaux at gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |DebugInfo
CC| |lucien.perregaux at gmail.com
--- Comment #1 from LucienPe <lucien.perregaux at gmail.com> ---
There is two bugs:
1. `break prog.main` should say `Function "prog.main" not defined.` (because of
https://issues.dlang.org/show_bug.cgi?id=21160), but it breaks somewhere else
(end of f() in this case)
---
void main()
{
int x = 123;
void f()
{
x++;
}
}
---
Removing `f()` produce `Function "prog.main" not defined.` ("normal"
behaviour).
2. Using `writeln` writes wrong data in the dwarf debug infos.
---
import std.stdio;
void main()
{
writeln("x");
}
---
`llvm-dwarfdump prog`:
--
error: unexpected end of data at offset 0x804 while reading [0x15, 0x4d1d)
error: unexpected end of data at offset 0x804 while reading [0x15, 0x4d1d)
0x00000789: DW_TAG_subprogram
DW_AT_sibling (0x00000852)
DW_AT_name
("std.exception.bailOut!(std.exception.ErrnoException).bailOut")
DW_AT_MIPS_linkage_name
("_D3std9exception__T7bailOutHTCQBcQBb14ErrnoExceptionZQBiFNfAyamMAxaZv")
DW_AT_decl_file ("phobos/std/exception.d")
DW_AT_decl_line (512)
DW_AT_low_pc (0x000000000004db00)
DW_AT_high_pc (0x000000000004db7c)
DW_AT_frame_base (0x00000214:
[0x000000000004db00, 0x000000000004db01): DW_OP_breg7 RSP+8
[0x000000000004db01, 0x000000000004db03): DW_OP_breg7 RSP+16
[0x000000000004db03, 0x000000000004db7c): DW_OP_breg6
RBP+16)
0x00000828: DW_TAG_formal_parameter
DW_AT_name ("msg")
DW_AT_type (0x000004f0 "_Array_char")
DW_AT_artificial (0x00)
DW_AT_location (DW_OP_fbreg -64)
---
Something in bailOut is not correctly emitted / not supported.
--
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