CarlosAlbertoEnciso added a comment.
Hi @sdesmalen!
First of all my apologies for commenting after the issue has been closed, but I
do not have an account to add a comment to the associated bugzilla.
I have found what it seems to be an issue with the current implementation.
For the given test case
int main() {
int size = 2;
int vla_expr[size];
vla_expr[1] = 1;
return 0;
}
and while debugging with LLDB, the following error is generated:
(lldb) n
Process 21014 stopped
* thread #1, name = 'bad.out', stop reason = step over
frame #0: 0x0000000000400502 bad.out`main at vla_2.cpp:7
4 int vla_expr[size];
5 vla_expr[1] = 1;
6
-> 7 return 0;
8 }
(lldb) p vla_expr
(unsigned long) $0 = 2
(lldb) p vla_expr[1]
error: subscripted value is not an array, pointer, or vector
(lldb)
Looking at the DWARF generated, there are 2 variables with the same name at the
same scope
DW_TAG_subprogram "main"
...
DW_TAG_variable "size"
DW_TAG_variable "vla_expr"
DW_TAG_variable "vla_expr"
I think there are 2 issues:
The compiler generated variable 'vla_expr'
- should be flagged as artificial (DW_AT_artificial)
- its name should start with double underscore to avoid conflicting with
user-defined names.
Thanks,
Carlos
Repository:
rL LLVM
https://reviews.llvm.org/D41698
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