https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63230
--- Comment #3 from matthew.hambley at metoffice dot gov.uk --- (In reply to matthew.hambley from comment #2) > Created attachment 34067 [details] > Minimal test case for the issue under v4.9.2. > > I just stumbled across this in v4.9.2. Attached is a minimal test case. And I should have included the compiler output: $ gfortran -Wall -Wextra stringalloc.f90 stringalloc.f90: In function ‘test’: stringalloc.f90:20:0: internal compiler error: in gimplify_expr, at gimplify.c:8538 allocate( character( len=len_trim( thing ) ) :: local%thing ) ^ 0x80569e gimplify_expr(tree_node**, gimple_statement_base**, gimple_statement_base**, bool (*)(tree_node*), int) ../../gcc-4.9.2/gcc/gimplify.c:8538 0x802929 gimplify_modify_expr ../../gcc-4.9.2/gcc/gimplify.c:4510 0x804b67 gimplify_expr(tree_node**, gimple_statement_base**, gimple_statement_base**, bool (*)(tree_node*), int) ../../gcc-4.9.2/gcc/gimplify.c:7627 0x806586 gimplify_stmt(tree_node**, gimple_statement_base**) ../../gcc-4.9.2/gcc/gimplify.c:5373 0x805033 gimplify_statement_list ../../gcc-4.9.2/gcc/gimplify.c:1432 0x805033 gimplify_expr(tree_node**, gimple_statement_base**, gimple_statement_base**, bool (*)(tree_node*), int) ../../gcc-4.9.2/gcc/gimplify.c:8042 0x806586 gimplify_stmt(tree_node**, gimple_statement_base**) ../../gcc-4.9.2/gcc/gimplify.c:5373 0x806e1b gimplify_bind_expr ../../gcc-4.9.2/gcc/gimplify.c:1099 0x80438e gimplify_expr(tree_node**, gimple_statement_base**, gimple_statement_base**, bool (*)(tree_node*), int) ../../gcc-4.9.2/gcc/gimplify.c:7824 0x806586 gimplify_stmt(tree_node**, gimple_statement_base**) ../../gcc-4.9.2/gcc/gimplify.c:5373 0x805033 gimplify_statement_list ../../gcc-4.9.2/gcc/gimplify.c:1432 0x805033 gimplify_expr(tree_node**, gimple_statement_base**, gimple_statement_base**, bool (*)(tree_node*), int) ../../gcc-4.9.2/gcc/gimplify.c:8042 0x806586 gimplify_stmt(tree_node**, gimple_statement_base**) ../../gcc-4.9.2/gcc/gimplify.c:5373 0x80408a gimplify_and_add ../../gcc-4.9.2/gcc/gimplify.c:385 0x80408a gimplify_expr(tree_node**, gimple_statement_base**, gimple_statement_base**, bool (*)(tree_node*), int) ../../gcc-4.9.2/gcc/gimplify.c:7964 0x806586 gimplify_stmt(tree_node**, gimple_statement_base**) ../../gcc-4.9.2/gcc/gimplify.c:5373 0x806e1b gimplify_bind_expr ../../gcc-4.9.2/gcc/gimplify.c:1099 0x80438e gimplify_expr(tree_node**, gimple_statement_base**, gimple_statement_base**, bool (*)(tree_node*), int) ../../gcc-4.9.2/gcc/gimplify.c:7824 0x806586 gimplify_stmt(tree_node**, gimple_statement_base**) ../../gcc-4.9.2/gcc/gimplify.c:5373 0x80743a gimplify_body(tree_node*, bool) ../../gcc-4.9.2/gcc/gimplify.c:8734 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <http://gcc.gnu.org/bugs.html> for instructions.