https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100250
Bug ID: 100250
Summary: ICE related to -Wmaybe-uninitialized
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: muecker at gwdg dot de
Target Milestone: ---
Created attachment 50670
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50670&action=edit
minimized test case
(possibly also affects 11.0)
xgcc (GCC) 12.0.0 20210424 (experimental)
bcd77b7b9f35bd5b559ed593c3b3e346c1e6f364
$ ../gcc_build_clean/gcc/xgcc -B../gcc_build_clean/gcc/ -Wmaybe-uninitialized
ice.c
ice.c: In function ‘md_reshape2’:
ice.c:34:9: warning: ‘<unknown>’ may be used uninitialized
[-Wmaybe-uninitialized]
34 | md_permute2(D, order, dims2, strs2, idims);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
during GIMPLE pass: *early_warn_uninitialized
ice.c:35:1: internal compiler error: Speicherzugriffsfehler
35 | }
| ^
0xe00f3f crash_signal
../../gcc/gcc/toplev.c:327
0x7f26a437583f ???
/build/glibc-vjB4T1/glibc-2.28/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0x80db7c tree_check(tree_node*, char const*, int, char const*, tree_code)
../../gcc/gcc/tree.h:3352
0x80db7c attr_access::array_as_string[abi:cxx11](tree_node*) const
../../gcc/gcc/attribs.c:2391
0x101789d maybe_warn_pass_by_reference
../../gcc/gcc/tree-ssa-uninit.c:566
0x101789d warn_uninitialized_vars
../../gcc/gcc/tree-ssa-uninit.c:648
0x1017c70 execute_early_warn_uninitialized
../../gcc/gcc/tree-ssa-uninit.c:3089
0x1017c70 execute
../../gcc/gcc/tree-ssa-uninit.c:3124
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
