Error Fortran Segmentation Fault
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Fortran 90 Segmentation Fault
Root Cause of Segmentation Faults SIGSEGV or SIGBUS errors Added fortran segmentation fault invalid memory reference September 29, 2011 Translating...TranslateChinese SimplifiedChinese TraditionalEnglishFrenchGermanItalianPortugueseRussianSpanishTurkish This is a computer translation of the original content. It
Fortran Segmentation Fault 174
is provided for general information only and should not be relied upon as complete or accurate. Share Tweet Share Problem : When I run my segmentation fault fortran 77 code compiled with the Intel Fortran Compiler I get 'sigsegv' on linux (or sigbus on Mac OS X). This code has run fine for years on
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Fortran Segmentation Fault (core Dumped)
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C++ Segmentation Fault
the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up “Segmentation Fault (core dumped)” https://software.intel.com/en-us/articles/determining-root-cause-of-sigsegv-or-sigbus-errors error in Fortran gfortran linux up vote 0 down vote favorite I am creating a program which will analyse a file .fits in a directory and then it will create another file .txt in another directory. It is just a converter. When I tried to execute the program (compiling is OK) it gives me an error message: Program received signal SIGSEGV: Segmentation fault - invalid http://stackoverflow.com/questions/20453315/segmentation-fault-core-dumped-error-in-fortran-gfortran-linux memory reference. Backtrace for this error: 0 0x7FC5ADB1C117 1 0x7FC5ADB1C6F4 2 0x7FC5AD46C0AF 3 0x44E704 in ffthdu at fitscore.c:6893 4 0x405101 in MAIN__ at Codigo.f90:? Segmentation fault (core dumped) And there is another information: when I delete a stretch of the program which does the "write to the new .txt converter file" part, the program goes OK and it reads the entire .fits file! Here is this stretch: arq='spec-1.txt' open (29,file=arq,status='unknown') write(29,*) ' l(n) fa(n)' do n=1,naxes write(29,*) l(n), fa(n) end do I have declared the variable "arq" as a character and everything is OK. When I delete this stretch the segmentation fault does not appear any more, but I do not know what to do now because I need to pass the information to this .txt! And the "arq" string is not complete because I am just testing now, later I will add the entire directory. And here is the full program, I am using "gfortran Codigo.f90 -o TESTE -Lcfitsio -lcfitsio" to compile it: implicit none integer largo,status,hdnum,n,keysexist,keysadd,bitpix,naxis integer naxes,readwrite,blocksize integer i,j,k integer iF(3),iT(3),iw(3),iwe,il,ib,jb,iFold,iFoldmin(3) integer iFoldmax(3),iFoldopt(3) integer iMiMy,iMo,Tymin,Tymax,Timin,Timax,Tyoung(3),Tint(3),Told integer i912,i45000,Tyin,Tiin,nrows,ncols,datacode,repeat,width integer nlam_ext integer fKD,fKK,fKKD parameter (nlam_ext = 1145) CHARACTER NAMECH*256,name2*256,alibi*1000,card*80,code*14 CHARACTER arq*1000 CHARACTER name(7)*256,namein*256,nebn
using dbx. This chapter includes the following topics: Debugging Fortran Debugging Segmentation Faults https://docs.oracle.com/cd/E19059-01/stud.9/817-6692/fortran.html Locating Exceptions Tracing Calls Working With Arrays Showing Intrinsic Functions Showing https://sourceforge.net/p/mingw-w64/bugs/487/ Complex Expressions Showing Logical Operators Viewing Fortran 95 Derived Types Pointer to Fortran 95 Derived Type Debugging Fortran The following tips and general concepts are provided to help you while debugging Fortran programs. For information on debugging Fortran OpenMP code with dbx, see Chapter 12. segmentation fault Current Procedure and File During a debug session, dbx defines a procedure and a source file as current. Requests to set breakpoints and to print or set variables are interpreted relative to the current function and file. Thus, stop at 5 sets different breakpoints, depending on which file is current. Uppercase Letters If your program fortran segmentation fault has uppercase letters in any identifiers, dbx recognizes them. You need not provide case-sensitive or case-insensitive commands, as in some earlier versions. Fortran 95 and dbx must be in the same case-sensitive or case-insensitive mode: Compile and debug in case-insensitive mode without the -U option. The default value of the dbx input_case_sensitive environment variable is then false. If the source has a variable named LAST, then in dbx, both the print LAST or print last commands work. Fortran 95 and dbx consider LAST and last to be the same, as requested. Compile and debug in case-sensitive mode using -U. The default value of the dbx input_case_sensitive environment variable is then true. If the source has a variable named LAST and one named last, then in dbx, print LAST works, but print last does not work. Fortran 95 and dbx distinguish between LAST and last, as requested. Note - File or directory names are always case-sensitive in dbx, even if you have set the dbx input_case_sensi
Bugs MinGW-w64 - for 32 and 64 bit Windows A complete runtime environment for gcc Brought to you by: jon_y, ktietz70, nightstrike Summary Files Reviews Support Wiki ▾ Wiki Wiki2 Mailing Lists Tickets ▾ External Testsuite Failures Bugs Support Requests Patches (Obsolete, use public Mailing List) Feature Requests News Discussion Donate Code Git ▾ web ironcrate mingw-w64 portablexdr Create Ticket View Stats Group v1.0 (example) Searches Changes Closed Tickets Open Tickets Help Formatting Help #487 OPEN bug in gFortran 5.1.0 Milestone: v1.0 (example) Status: open Owner: nobody Labels: gFortran OPEN (1) Priority: 5 Updated: 2015-10-05 Created: 2015-07-09 Creator: John Campbell Private: No mingw gFortran Ver 5.1.0 does not open files that exist, but reports "Program received signal SIGSEGV: Segmentation fault - invalid memory reference" The valid open statement is: OPEN (UNIT=98, FILE=JOURNAL, STATUS='UNKNOWN', IOSTAT=iostat, iomsg=msg) I have attached a short test program that exhibits the problem, together with listing of .bat, interactive gdb commands and trace of error report. Files that do not exist open successfully, but files that do exist fail, locking up the cmd.exe box. This bug means that programs can create files but not read from data files. gcc version 5.1.0 (x86_64-posix-seh-rev0, Built by MinGW-W64 project) I am running in cmd.exe on Windows 7 Home Premium Service Pack 1 1 Attachments ver510e.tce Related Bugs: #487 Discussion John Campbell - 2015-07-10 I hope someone can review this bug report, as if my test results are generally the case, this gFortran version 5.1.0 is not useable. If you can't open an input file then a major group of Fortran programs can not be generated by this compiler. This problem does not exist with Ver 4.9.2 If you would like to refer to this comment somewhere else in this project, copy and paste the following link: Mark Hampson - 2015-07-31 I'm also getting this behavior. Edit: I'd like to add that this happens for both the 32bit and 64bit versions, with any combinations of ACCESS/STATUS/POSITION/ACTION. As long as the file already exits, the 5.1.0 rev0 builds will throw a SIGSEGV. Edit²: The build: "gcc-5-win64_5.1.1-20150715.7z" at "https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/dongsheng-daily/5.x/" works, in case this may help. Last edit: Mark Hampson 2015-08-02 If you would like to refer to this comment somewhere else in this project, copy and paste the following link: Patrick Le Roux - 2015-08-29 Same for me, going from 4.8 to 5.10 stopped all my