The following program causes a fault in the compiler:
c_loc_prob.f:0: internal compiler error: Segmentation fault: 11
This is the reduced program:
PROGRAM c_loc_prob
USE, INTRINSIC :: ISO_C_BINDING, ONLY: C_LOC
! USE, INTRINSIC :: ISO_C_BINDING, ONLY: C_PTR, C_LOC
END PROGRAM c_loc_prob
Additional information:
- Options for optimization and warnings seem to not affect the errot.
- If C_PTR is declared prior to C_LOC (as in the comment), the compiler
doesn't fault.
- In the original programs (from which this example is extracted, the
declaration of C_PTR prior to C_LOC causes the compiler to erroneously
diagnose various other constructs
Workarounds:
At least two workaounds for this problem work in the other (much larger)
programs:
- Avoid use of ONLY: qualifier to ISO_C_BINDING, e.g.,
USE, INTRINSIC :: ISO_C_BINDING
- Replace C_LOC with LOC at the invocation and C_PTR with C_LONG at the
INTERFACE declaration.
--
Summary: USE of ISO_C_BINDING, ONLY: C_LOC causes compiler seg
fault
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: sysmaint at contek dot com
GCC build triplet: same
GCC host triplet: gfortran - 386-portbld-freebsd6.2 - 4.3.0 20070713
(experimental
GCC target triplet: same
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32801
