https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66310
Bug ID: 66310
Summary: Problems with intrinsic repeat for large number of
copies
Product: gcc
Version: 5.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: [email protected]
Target Milestone: ---
This small program compiles without any message (gfortran 5.1.1, 4.9.0, 4.8.3)
program p
character :: z = 'z'
print *, repeat(z, huge(1_4))
end
but running the binary ./a.out yields (e.g. with 5.1.1 on SUSE Linux 13.2, 64
bit) :
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
Adding a parameter attribute to above source,
program p
character, parameter :: z = 'z'
print *, repeat(z, huge(1_4))
end
then compilation aborts with :
f951: out of memory allocating 18446744065119617024 bytes after a total of
425984 bytes
The requested memory is about 2^64 bytes and much too large.
huge(1_4) is 2147483647.
Remarks :
The relevant ulimits of the system were unlimited.
The amount of free RAM was much larger than 2 GB.
