Allocatable deferred-length character requires "assume realloc_lhs"

Reference Number : DPD200137145

Version : 11.1

Operating System : All

Problem Description : A Fortran 2003 language feature newly supported by the 11.1 compiler is allocatable, deferred-length character variables. The standard specifies that when such a variable is assigned to, it is automatically reallocated, if necessary, to the correct size.  Due to an implementation error, use of this feature requires compilation with the /assume:realloc_lhs (Windows) or -assume realloc_lhs (Linux and Mac OS) options.

For example:

character(:), allocatable :: string
string = 'Hello' // ' World!'
print *, string
The variable "string" should become allocated with length 12 and the contents "Hello World!", but this does not happen unless "assume realloc_lhs" is specified.

Resolution Status : This problem will be corrected in a product update.  As a workaround, specify the "assume realloc_lhs" option when building applications that use this feature.

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