https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102681
Bug ID: 102681
Summary: AArch64 bootstrap failure
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: fxue at os dot amperecomputing.com
Target Milestone: ---
This occurs after commit "Loosen loop crossing restriction in threader"
(ec0124e0acb556cdf5dba0e8d0ca6b69d9537fcc).
In function ‘void mark_stack_region_used(poly_uint64, poly_uint64)’,
inlined from ‘rtx_def* emit_library_call_value_1(int, rtx, rtx,
libcall_type, machine_mode, int, rtx_mode_t*)’ at ../../gcc/calls.c:4536:29:
../../gcc/calls.c:206:26: error: ‘const_upper’ may be used uninitialized in
this function [-Werror=maybe-uninitialized]
206 | stack_usage_map[i] = 1;
| ~~~~~~~~~~~~~~~~~~~^~~
../../gcc/calls.c: In function ‘rtx_def* emit_library_call_value_1(int, rtx,
rtx, libcall_type, machine_mode, int, rtx_mode_t*)’:
../../gcc/calls.c:202:39: note: ‘const_upper’ was declared here
202 | unsigned HOST_WIDE_INT const_lower, const_upper;
| ^~~~~~~~~~~
