https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117164
Bug ID: 117164
Summary: ICE building gcc.dg/nested-func-12.c with -std=gnu23
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: jsm28 at gcc dot gnu.org
CC: uecker at gcc dot gnu.org
Target Milestone: ---
If I build gcc.dg/nested-func-12.c with -std=gnu23 (in addition to the other
options given in that testcase - this ICE doesn't appear without those
options), I get the following ICE (discovered while testing a change to default
to -std=gnu23, verified with an unmodified compiler). I suspect this may be
related to tag compatibility changes, as the most likely reason for -std=gnu23
to affect this test (and especially for the error about an invalid conversion
between struct S and struct S), though I haven't verified that.
src/gcc/gcc/testsuite/gcc.dg/nested-func-12.c: In function 'main':
src/gcc/gcc/testsuite/gcc.dg/nested-func-12.c:45:1: error: invalid conversion
in gimple call
45 | main (void)
| ^~~~
struct S
struct S
# .MEM_21 = VDEF <.MEM_20>
MEM <struct S> [(struct S *)_7] = fn (); [static-chain: &FRAME.5] [return slot
optimization]
src/gcc/gcc/testsuite/gcc.dg/nested-func-12.c:45:1: error: invalid conversion
in gimple call
struct S
struct S
# .MEM_24 = VDEF <.MEM_23>
MEM <struct S> [(struct S *)x.1_6] = fn (); [static-chain: &FRAME.5] [return
slot optimization]
src/gcc/gcc/testsuite/gcc.dg/nested-func-12.c:45:1: error: invalid conversion
in gimple call
struct S
struct S
# .MEM_27 = VDEF <.MEM_26>
MEM <struct S> [(struct S *)_10] = fn (); [static-chain: &FRAME.5] [return slot
optimization]
src/gcc/gcc/testsuite/gcc.dg/nested-func-12.c:45:1: error: invalid conversion
in gimple call
struct S
struct S
# .MEM_30 = VDEF <.MEM_29>
MEM <struct S> [(struct S *)_12] = fn (); [static-chain: &FRAME.5] [return slot
optimization]
during GIMPLE pass: fixup_cfg
src/gcc/gcc/testsuite/gcc.dg/nested-func-12.c:45:1: internal compiler error:
verify_gimple failed
0x24cd610 internal_error(char const*, ...)
/notnfs/josmyers/glibc-bot/src/gcc/gcc/diagnostic-global-context.cc:517
0x10c1655 verify_gimple_in_cfg(function*, bool, bool)
/notnfs/josmyers/glibc-bot/src/gcc/gcc/tree-cfg.cc:5681
0xf3fa24 execute_function_todo
/notnfs/josmyers/glibc-bot/src/gcc/gcc/passes.cc:2096
0xf3ff9e execute_todo
/notnfs/josmyers/glibc-bot/src/gcc/gcc/passes.cc:2150
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
