[Bug c/87927] ICE: segmentation fault with patchable_function_entry attribute for msp430-elf -mlarge

[jozef.l at mittosystems dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87927

--- Comment #1 from Jozef Lawrynowicz <jozef.l at mittosystems dot com> ---
Created attachment 44968
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44968&action=edit
proposed patch

In default_print_patchable_function_entry, integer_asm_op is passed
POINTER_SIZE_UNITS. For msp430-elf -mlarge, this is 3, which is not handled in
integer_asm_op, so it returns NULL.
fputs is directly writing out the return value of integer_asm_op, so when this
is NULL we are segfaulting.

Attached is a proposed patch which implements
TARGET_ASM_{,UN}ALIGNED_P{S,D,T}I_OP, so integer_asm_op will not return NULL
for values < 16.

This fixes the c-c++-common/patchable_function_entry* tests but is otherwise
untested.