Problem with PRTARR() (was : pb with FITS Binary tables) about gdl HOT 9 CLOSED

I think it is something to do with line 458 in mrdfits.pro where it calls
match, keyword, scales_names, mkey_scales, mscales, count = N_mscales
The problem is because there are no matches (no TSCALnn) in the header.

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The problem is because scales = ptrarr(n_mforms, /all) (line ~446 in mrdfits.pro) gives
print,scales

(NullPointer)(NullPointer)

This is what it should be (in gdl 1.0.3 and in fl)
FL> print,scales
(PtrHeapVar1)(PtrHeapVar2)

The nullpointer causes it to break. Note that I replaced < with ( above to get it to show up.

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OK, thanks you @jaymurthy I can reproduce your bug 😿

now we will try to solved it

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OK, the problem appeared between April 25 and 26, when I try to clean up the keywords (by name/by number)

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OK, I think I got it. In fact PTRARR() has one and only one keyword ... "ALLOCATE_HEAP"

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OK @jaymurthy , I solved it, I have the feeling we had a pending bug in the past ...
My problem now is to do a clean PR !

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Great work, Alain.

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The bug should be solved in #1838

In fact, it is related to my changes within keywords by index / keyword by name.
I created a bug in PTRARR() function. But the initial code did not work in detail as it should.
Fortunately we had a test covering the other side effect.

Nevertheless we need to add more tests related to PTRARR() to cover the problem reported here

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Again thanks @jaymurthy for rapid feedback and clear bug report. I can go quickly to the culprit.

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