# GNU

**URL:** https://fortran-lang.discourse.group/c/compilers/gnu/26.md?page=1

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## [Possible gfortran bug for parametrized derived types](https://fortran-lang.discourse.group/t/possible-gfortran-bug-for-parametrized-derived-types/8188)

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**Author:** [@Stijn](https://fortran-lang.discourse.group/u/Stijn)\
**Replies:** 7\
**Last updated:** [July 22, 2024, 2:19pm UTC](https://fortran-lang.discourse.group/t/possible-gfortran-bug-for-parametrized-derived-types/8188 "2024-07-22T14:19:14Z")

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When allocating a list of a parametrized derived type, it seems that gfortran only applies the correct parameter value to the first element in the array. Ifort and IFX handle the allocation as I would expect and apply th…

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## [Multicore (native) coarrays implementation for GNU Fortran](https://fortran-lang.discourse.group/t/multicore-native-coarrays-implementation-for-gnu-fortran/8215)

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**Author:** [@Mehdi\_Chinoune](https://fortran-lang.discourse.group/u/Mehdi_Chinoune)\
**Replies:** 2\
**Last updated:** [June 25, 2024, 6:25pm UTC](https://fortran-lang.discourse.group/t/multicore-native-coarrays-implementation-for-gnu-fortran/8215 "2024-06-25T18:25:29Z")

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There were some work on supporting native coarrays implemetation for GNU Fortran (Similar to NAG -coarray=cosmp) Any news about it? Is it abandoned, holded or still under development?

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## [Gfortran-13/14 finalization: issue, called from deallocated memory?](https://fortran-lang.discourse.group/t/gfortran-13-14-finalization-issue-called-from-deallocated-memory/8225)

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**Author:** [@FedericoPerini](https://fortran-lang.discourse.group/u/FedericoPerini)\
**Replies:** 8\
**Last updated:** [June 20, 2024, 5:42pm UTC](https://fortran-lang.discourse.group/t/gfortran-13-14-finalization-issue-called-from-deallocated-memory/8225 "2024-06-20T17:42:22Z")

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I’m running into some issues with gfortran-14 and finalization that are occurring since updating to gfortran 14 (homebrew/msys). Here is a minimum working example at the compiler explorer When a derived type is structu…

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## [Trimming a file and advance='no'](https://fortran-lang.discourse.group/t/trimming-a-file-and-advance-no/8229)

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**Author:** [@martin](https://fortran-lang.discourse.group/u/martin)\
**Replies:** 5\
**Last updated:** [June 19, 2024, 9:44am UTC](https://fortran-lang.discourse.group/t/trimming-a-file-and-advance-no/8229 "2024-06-19T09:44:28Z")

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I want to trim a text file to a given number of lines. To this end I use a readline routine (pretty much like the getline\_char in stdlib) and endfile to cut off remaining lines. See code and test.dat file below. This wo…

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## [GCC 14 Fortran features](https://fortran-lang.discourse.group/t/gcc-14-fortran-features/7984)

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**Author:** [@Beliavsky](https://fortran-lang.discourse.group/u/Beliavsky)\
**Replies:** 0\
**Last updated:** [May 7, 2024, 2:29pm UTC](https://fortran-lang.discourse.group/t/gcc-14-fortran-features/7984 "2024-05-07T14:29:51Z")

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GCC 14.1 was released on May 7. Below are the new Fortran-related features of GCC 14. Equation.com has Windows binaries for gcc/gfortran 15 (beta). Thanks to the gfortran developers for their efforts. General Improvemen…

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## [Segmentation fault when finalizing an inherited type with custom constructor](https://fortran-lang.discourse.group/t/segmentation-fault-when-finalizing-an-inherited-type-with-custom-constructor/7319)

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**Author:** [@jhaiduce](https://fortran-lang.discourse.group/u/jhaiduce)\
**Replies:** 12\
**Last updated:** [May 4, 2024, 7:34pm UTC](https://fortran-lang.discourse.group/t/segmentation-fault-when-finalizing-an-inherited-type-with-custom-constructor/7319 "2024-05-04T19:34:10Z")

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I’m trying to troubleshoot some code that was working in earlier gfortran versions (5-12), but when compiled with gfortran 13.2.1 it produces a segmentation fault. The following appears to be the minimum that reproduces …

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## [Gfortran lowercasing all symbols](https://fortran-lang.discourse.group/t/gfortran-lowercasing-all-symbols/7941)

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**Author:** [@jamestpp](https://fortran-lang.discourse.group/u/jamestpp)\
**Replies:** 8\
**Last updated:** [May 1, 2024, 5:35pm UTC](https://fortran-lang.discourse.group/t/gfortran-lowercasing-all-symbols/7941 "2024-05-01T17:35:44Z")

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Hello community When I compiled the code using gfortran it generates all symbols in lowercase. in ifx/ifort there is a flag to change this behavior (-names uppercase). What is the best way to make this happen in gfortra…

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## [OpenMP compilers that support declare mapper](https://fortran-lang.discourse.group/t/openmp-compilers-that-support-declare-mapper/7906)

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**Author:** [@Jerry](https://fortran-lang.discourse.group/u/Jerry)\
**Replies:** 2\
**Last updated:** [April 24, 2024, 12:43pm UTC](https://fortran-lang.discourse.group/t/openmp-compilers-that-support-declare-mapper/7906 "2024-04-24T12:43:43Z")

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Hello, I am trying to offload a large codebase to AMD GPUs with OpenMP. The code as is, is based on array of structures logic. I have read that !$omp declare mapper can be used to perform a deep copy. However, I took an…

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## [\-fopenmp on gfortran](https://fortran-lang.discourse.group/t/fopenmp-on-gfortran/7494)

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**Author:** [@solej](https://fortran-lang.discourse.group/u/solej)\
**Replies:** 18\
**Last updated:** [March 2, 2024, 7:57pm UTC](https://fortran-lang.discourse.group/t/fopenmp-on-gfortran/7494 "2024-03-02T19:57:36Z")

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I was testing AMD cpus with our software. We use the -fopenmpi flag. As seen in this table, the time to complete (min) is gets bad if i choose newer compiler versions: (128 cores) gfortran-10 5.8 gfortran-11 8.7 gfor…

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## [Creating temporary array when declared in a module](https://fortran-lang.discourse.group/t/creating-temporary-array-when-declared-in-a-module/7379)

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**Author:** [@yarchik](https://fortran-lang.discourse.group/u/yarchik)\
**Replies:** 12\
**Last updated:** [February 11, 2024, 1:15pm UTC](https://fortran-lang.discourse.group/t/creating-temporary-array-when-declared-in-a-module/7379 "2024-02-11T13:15:53Z")

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This is my first post here, I am still learning the etiquette here. Therefore, please, apologise me if I do not fully conform the style of posts here. I decided to register here after my post at Stackoverflow received o…

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