http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52418
Bug #: 52418 Summary: (unnecessary) automatic reallocation of lhs causes segfault Classification: Unclassified Product: gcc Version: 4.6.2 Status: UNCONFIRMED Severity: major Priority: P3 Component: fortran AssignedTo: unassig...@gcc.gnu.org ReportedBy: therob...@gmail.com Created attachment 26771 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26771 program to reproduce bug The following program causes a segfault: PROGRAM reshape_test IMPLICIT NONE REAL, DIMENSION(:,:), ALLOCATABLE :: m2 REAL, DIMENSION(:,:,:), ALLOCATABLE :: m3 ALLOCATE( m2( 6, 1 ), m3( 2, 3, 1 ) ) m2 = -1 m3 = RESHAPE( m2, SHAPE(m3) ) m3 = 2 WRITE(*,*) 'm3(1,1,1) = ', m3(1,1,1) END PROGRAM reshape_test If compiled with -fno-realloc-lhs, the code runs as expected. There really shouldn't be any reallocation here, so this shouldn't make a difference. Either way it should not cause a segfault. Side note: I love all of the work on f2003/2008! The OO features make fortran fun again. Thanks!