semantic error: Format expression must be default character or integer

[oroppas]

/mis/itmprt.f:112:21: error: Format expression must be default character or integer
       & WRITE  (OTPE,CORE) (ICORE(I),I=NS,NP)

gfortran gives

./mis/itmprt.f:112.20:

     & WRITE  (OTPE,CORE) (ICORE(I),I=NS,NP)                            
                    1
Warning: Legacy Extension: Non-character in FORMAT tag at (1)

[oroppas]

Note to myself: this is showstopper to compile https://github.com/nasa/NASTRAN-95

[klausler]

We're going to have to see more context. How is CORE declared?

[oroppas]

The error can be reproduced by the following piece of code:

      SUBROUTINE ITMPRT (OTPE)

      INTEGER         OTPE
      DIMENSION       ICORE(4)
      COMMON /ZZZZZZ/ CORE(1)
      EQUIVALENCE     (ICORE(1),CORE(1))

      INUM = NZ/2 - 1
      NS   = INUM + 1
      NP   = INUM - 1

      WRITE  (OTPE,CORE) (ICORE(I),I=NS,NP)

      END

[klausler]

It's a valid message for that code snippet. I'm not sure what the original code was trying to accomplish.

[oroppas]

flang says error and gfortran says warning. Which one is the correct behavior?

[klausler]

It is not a standard-conforming program, but it may be using a non-standard extension that f18 doesn't support. So both messages may be correct. If it's an extension that f18 should support, I'll need to see more context to understand what was supposed to happen. I suspect that a non-character array has been initialized or assigned with a Hollerith value that constitutes a format specification, but I can't be sure given what I'm been shown.

[oroppas]

Hmm, I'm not very familiar with NASTRAN-95, either. But I'm not surprised if NASTRAN uses non-standard extension.

[oroppas]

CORE is assigned as follows

      CORE(1) = OPAREN

with OPAREN

      EQUIVALENCE     (CCORE,CORE)
      EQUIVALENCE     (ICORE(1),CORE(1))
      DATA    OPAREN, CPAREN,EC,EC1,EC2,INTGC,ALPHC,ALPHC1,CONT,UNED,D/
     1        4H(1X , 4H)   ,4H,1P,,4HE13.,4H6   ,4H,I13,4H,9X,,4HA4  ,
     2        4HCONT, 4HINUE,4HD   /
      DATA    BLANK , SUBS,ITM/4H    ,4HSUBS,4HTRUC,4HTURE,4HITEM/
      DATA    EQSS  / 4HEQSS/, BGSS/4HBGSS/, CSTM/4HCSTM /,
     1        PLTS  / 4HPLTS/, LODS/4HLODS/, LOAP/4HLOAP /

Similar to #883?

[klausler]

Thank you. Yes, it's the same non-standard extension. There's no good source work-around, so we'll just have to support it.