| Issue |
202354
|
| Summary |
[flang][debug] line location set in the middle of the loop in array inlined array expressions causing breakpoints to fire too many times.
|
| Labels |
flang
|
| Assignees |
|
| Reporter |
jeanPerier
|
Reported by @abidh in this [PR discussion](https://github.com/llvm/llvm-project/pull/197092#issuecomment-4615669711).
The issue is reproductible when reverting https://github.com/llvm/llvm-project/pull/201774 with flang -g -O0:
```
program broadcast
implicit none
integer :: arr(4)
arr = 11 ! line 5: scalar-to-array broadcast
print *, 'arr = ', arr ! line 6
end program broadcast
```
The break point on line 5 will fire 4 times (for each iteration of the array _expression_). This does not happens with other Fortran compiler that also inline the array _expression_ at O0, so something needs to be fixed around the line location for array expressions in flang.
Note that for a slightly different repro like below, the issue does not happen:
```
subroutine foo(x)
integer :: x(100)
x = 1
end subroutine
integer :: x(100)
call foo(x)
print *, x(1), x(100)
end
```
This issue should be fixed so that https://github.com/llvm/llvm-project/pull/201774 can be reverted. All other compilers inline scalar to array assignment at O0.
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