FOR$IOS_OPEREQSEE. Attempted an operation on a file that requires the ability to perform seek operations on that file. Make sure the correct unit, directory path, and file were specified.

FOR$IOS_BRK_RANGE. An array subscript is outside the dimensioned boundaries of that array. Recompile with the /check:bounds option set.

FOR$IOS_BRK_RANGE2. An array subscript is outside the dimensioned boundaries of that array. Recompile with the /check:bounds option set.

FOR$IOS_FLTINE. A floating-point arithmetic or conversion operation gave a result that differs from the mathematically exact result. This trap is reported if the rounded result of an IEEE operation is not exact.

FOR$IOS_ROPRAND. The Compaq Fortran RTL encountered a reserved operand while executing your program. Please report the problem to Compaq.

FOR$IOS_ASSERTERR. The Compaq Fortran RTL encountered an assertion error. Please report the problem to Compaq.

FOR$IOS_NULPTRERR. Attempted to use a pointer that does not contain an address. Modify the source program, recompile, and relink.

FOR$IOS_STKOVF. The Compaq Fortran RTL encountered a stack overflow while executing your program. See the Section "Guidelines for Programs That Use Large Data Arrays" in the post-installation part of Compaq Visual Fortran Installing and Getting Started.

FOR$IOS_STRLENERR. During a string operation, an integer value appears in a context where the value of the integer is outside the permissible string length range. Recompile with the /check:bounds option.

FOR$IOS_SUBSTRERR. An array subscript is outside the dimensioned boundaries of an array. Recompile with the /check:bounds option.

FOR$IOS_RANGEERR. An integer value appears in a context where the value of the integer is outside the permissible range.

FOR$IOS_INVREALLOC. An allocatable array must not already be allocated when you attempt to allocate it. You must deallocate the array before it can again be allocated.

FOR$IOS_RESACQFAI. Failed to acquire a Compaq Fortran RTL global resource for a reentrant routine. For a multithreaded program, the requested global resource is held by a different thread in your program. For a program using asynchronous handlers, the requested global resource is held by the calling part of the program (such as main program) and your asynchronous handler attempted to acquire the same global resource.

FOR$IOS_INVDEALLOC. A Fortran 90 allocatable array or pointer must already be allocated when you attempt to deallocate it. You must allocate the array or pointer before it can again be deallocated.

FOR$IOS_RANGE. An array subscript is outside the dimensioned boundaries of that array. Recompile with the /check:bounds option set.

FOR$IOS_RANGE2. An array subscript is outside the dimensioned boundaries of that array. Recompile with the /check:bounds option set.

FOR$IOS_DEF_GENTRAP. The Compaq Fortran RTL has detected an unknown GENTRAP code. The cause is most likely a software problem due to memory corruption, or software signalling an exception with an incorrect exception code. Try recompiling with the /check:bounds option set to see if that finds the problem.

FOR$IOS_ACCVIO. The program tried to read from or write to a virtual address for which it does not have the appropriate access. Try recompiling with the /check:bounds and /warn:argument_checking options set, to see if the problem is an out-of-bounds memory reference or a argument mismatch that causes data to be treated as an address.

Other causes of this error include:

• Mismatches in C vs. STDCALL calling mechanisms, causing the stack to become corrupted
• References to unallocated pointers
• Attempting to access a protected (for example, read-only) address

FOR$IOS_DTYPE_MISALIGN. The Compaq Fortran RTL has detected data that is not aligned on a natural boundary for the data type specified. For example, a REAL(8) data item aligned on natural boundaries has an address that is a multiple of 8. To ensure naturally aligned data, use the /alignment option. For more information on alignment, see Data Alignment Considerations in the Programmer's Guide.

This is an operating system error. See your operating system documentation for more information.

FOR$IOS_PGM_BPT. The Compaq Fortran RTL has encountered a breakpoint in the program.

This is an operating system error. See your operating system documentation for more information.

FOR$IOS_PGM_SS. A trace trap or other single-instruction mechanism has signaled that one instruction has been executed.

This is an operating system error. See your operating system documentation for more information.

FOR$IOS_PGM_BOUNDS. The program tried to access an array element that is outside the specified boundaries of the array. Recompile with the /check:bounds option set.

FOR$IOS_PGM_DENORM. A floating-point arithmetic or conversion operation has a denormalized number as an operand. A denormalized number is smaller than the lowest value in the normal range for the data type specified. See the Data Representation chapter in the Programmer's Guide for ranges for floating-point types.

Either locate and correct the source code causing the denormalized value or, if a denormalized value is acceptable, specify a different value for the /fpe compiler option to allow program continuation.

FOR$IOS_PGM_FLTSTK. During a floating-point operation, the floating-point register stack on ia32 systems overflowed or underflowed. This is a fatal exception. The most likely cause is calling a REAL function as if it were an INTEGER function or subroutine, or calling an INTEGER function or subroutine as if it were a REAL function.

Carefully check that the calling code and routine being called agree as to how the routine is declared. If you are unable to resolve the issue, please send a problem report with an example to Compaq.

FOR$IOS_PGM_INTDIV. During an integer arithmetic operation, an attempt was made to divide by zero. Locate and correct the source code causing the integer divide by zero.

FOR$IOS_PGM_INTOVF. During an arithmetic operation, an integer value exceeded the largest representable value for that data type. See the Data Representation chapter in the Programmer's Guide for ranges for INTEGER types.

This message appears when /check:overflow was specified and an integer overflow appears.

FOR$IOS_PGM_PRIVINST. The program tried to execute an instruction whose operation is not allowed in the current machine mode.

This is an operating system error. See your operating system documentation for more information.

FOR$IOS_PGM_INPGERR. The program tried to access a page that was not present, so the system was unable to load the page. For example, this error might occur if a network connection was lost while trying to run a program over the network.

This is an operating system error. See your operating system documentation for more information.

FOR$IOS_PGM_ILLINST. The program tried to execute an invalid instruction.

This is an operating system error. See your operating system documentation for more information.

FOR$IOS_PGM_NOCONTEXCP. The program tried to continue execution after a noncontinuable exception occurred.

This is an operating system error. See your operating system documentation for more information.

FOR$IOS_PGM_STKOVF. The Compaq Fortran RTL has detected a stack overflow while executing your program. See your Release Notes for information on how to increase stack size.

FOR$IOS_PGM_INVDISP. An exception handler returned an invalid disposition to the exception dispatcher. Programmers using a high-level language should never encounter this exception.

This is an operating system error. See your operating system documentation for more information.

FOR$IOS_PGM_EXCP_CODE. The Compaq Fortran RTL has detected an unknown exception code.

This is an operating system error. See your operating system documentation for more information.

FOR$IOS_INVDEALLOC2. A pointer that was passed to DEALLOCATE pointed to an explicit array, an array slice, or some other type of memory that could not be deallocated in a DEALLOCATE statement. Only whole arrays previous allocated with an ALLOCATE statement may be validly passed to DEALLOCATE.

FOR$IOS_SHORTDATEARG. The number of characters associated with the DATE argument to the DATE_AND_TIME intrinsic was shorter than the required length. You must increase the number of characters passed in for this argument to be at least 8 characters in length. Verify that the TIME and ZONE arguments also meet their minimum lengths.

FOR$IOS_SHORTTIMEARG. The number of characters associated with the TIME argument to the DATE_AND_TIME intrinsic was shorter than the required length. You must increase the number of characters passed in for this argument to be at least 10 characters in length. Verify that the DATE and ZONE arguments also meet their minimum lengths.

FOR$IOS_SHORTZONEARG. The number of characters associated with the ZONE argument to the DATE_AND_TIME intrinsic was shorter than the required length. You must increase the number of characters passed in for this argument to be at least 5 characters in length. Verify that the DATE and TIME arguments also meet their minimum lengths.

FOR$IOS_DIV. A floating-point or integer divide-by-zero exception occurred.

FOR$IOS_ARRSIZEOVF. An attempt to dynamically allocate storage for an array failed because the required storage size exceeds addressable memory.

FOR$IOS_FLAWEDPENT. The Fortran run-time system detected a flawed Pentium® processor. Please contact Intel® to upgrade your processor. To allow program execution to continue when this condition occurs, set the environment variable FOR_RUN_FLAWED_PENTIUM to true and rerun the program. For more information, see Intel Pentium Floating-Point Flaw.

FOR$IOS_UNFIO_FMT. Attempted unformatted I/O to a unit where the OPEN statement (FORM specifier) indicated the file was formatted. Check that the correct unit (file) was specified. If the FORM specifier was not present in the OPEN statement and the file contains unformatted data, specify FORM='UNFORMATTED'in the OPEN statement. Otherwise, if appropriate, use formatted I/O (such as list-directed or namelist I/O).

FOR$IOS_FMTIO_UNF. Attempted formatted I/O (such as list-directed or namelist I/O) to a unit where the OPEN statement indicated the file was unformatted (FORM specifier). Check that the correct unit (file) was specified. If the FORM specifier was not present in the OPEN statement and the file contains formatted data, specify FORM='FORMATTED' in the OPEN statement. Otherwise, if appropriate, use unformatted I/O.

FOR$IOS_SEQIO_DIR. The OPEN for this unit number specified direct access and the I/O statement specifies sequential access. Check the OPEN statement and make sure the I/O statement uses the correct unit number and type of access.

For more information on OPEN and other statements, see the A to Z Reference in the online Language Reference or the printed Compaq Fortran Language Reference Manual.

FOR$IOS_OPEREQDIS. Attempted to use a BACKSPACE statement on such devices as a terminal.

FOR$IOS_OPEREQSEQ. Attempted to use a BACKSPACE statement on a file whose organization was not sequential or whose access was not sequential. A BACKSPACE statement can only be used for sequential files opened for sequential access.

FOR$IOS_PROABOUSE. The program called the abort routine to terminate itself.

FOR$IOS_ENDRECDUR. An end-of-record condition was encountered during execution of a nonadvancing I/O READ statement that did not specify the EOR branch specifier.

FOR$IOS_FLOINEEXC. The total number of floating-point inexact data traps encountered during program execution was nn. This summary message appears at program completion.

FOR$IOS_FLOINVEXC. The total number of floating-point invalid data traps encountered during program execution was nn. This summary message appears at program completion.

FOR$IOS_FLOOVFEXC. The total number of floating-point overflow traps encountered during program execution was nn. This summary message appears at program completion.

FOR$IOS_FLODIV0EXC. The total number of floating-point divide-by-zero traps encountered during program execution was nn. This summary message appears at program completion.

FOR$IOS_FLOUNDEXC. The total number of floating-point underflow traps encountered during program execution was nn. This summary message appears at program completion.