https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105575
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org,
| |marxin at gcc dot gnu.org
Last reconfirmed| |2022-05-12
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
I can reproduce it on x86_64-linux-gnu where it ends with stack overflow:
Program received signal SIGSEGV, Segmentation fault.
0x00000000011795b3 in comp_template_parms_position (t1=0x7fffd2fa9c78,
t2=0x7fffd2fb1150) at ../../gcc/cp/typeck.c:1205
1205 if (cxx_dialect >= cxx14 && (is_auto (t1) || is_auto (t2)))
(gdb) bt
#0 0x00000000011795b3 in comp_template_parms_position (t1=0x7fffd2fa9c78,
t2=0x7fffd2fb1150) at ../../gcc/cp/typeck.c:1205
#1 0x0000000001178e83 in structural_comptypes (t1=0x7fffd2fa9c78,
t2=0x7fffd2fb1150, strict=0) at ../../gcc/cp/typeck.c:1358
#2 0x00000000012ab40a in comp_template_parms (parms1=<optimized out>,
parms2=<optimized out>) at ../../gcc/cp/pt.c:3369
#3 0x0000000001178eb9 in structural_comptypes (t1=0x7fffd2fa9c78,
t2=0x7fffd2fb1150, strict=0) at ../../gcc/cp/typeck.c:1361
#4 0x00000000012ab40a in comp_template_parms (parms1=<optimized out>,
parms2=<optimized out>) at ../../gcc/cp/pt.c:3369
#5 0x0000000001178eb9 in structural_comptypes (t1=0x7fffd2fa9c78,
t2=0x7fffd2fb1150, strict=0) at ../../gcc/cp/typeck.c:1361
#6 0x00000000012ab40a in comp_template_parms (parms1=<optimized out>,
parms2=<optimized out>) at ../../gcc/cp/pt.c:3369
#7 0x0000000001178eb9 in structural_comptypes (t1=0x7fffd2fa9c78,
t2=0x7fffd2fb1150, strict=0) at ../../gcc/cp/typeck.c:1361
#8 0x00000000012ab40a in comp_template_parms (parms1=<optimized out>,
parms2=<optimized out>) at ../../gcc/cp/pt.c:3369
#9 0x0000000001178eb9 in structural_comptypes (t1=0x7fffd2fa9c78,
t2=0x7fffd2fb1150, strict=0) at ../../gcc/cp/typeck.c:1361
#10 0x00000000012ab40a in comp_template_parms (parms1=<optimized out>,
parms2=<optimized out>) at ../../gcc/cp/pt.c:3369
#11 0x0000000001178eb9 in structural_comptypes (t1=0x7fffd2fa9c78,
t2=0x7fffd2fb1150, strict=0) at ../../gcc/cp/typeck.c:1361
#12 0x00000000012ab40a in comp_template_parms (parms1=<optimized out>,
parms2=<optimized out>) at ../../gcc/cp/pt.c:3369
#13 0x0000000001178eb9 in structural_comptypes (t1=0x7fffd2fa9c78,
t2=0x7fffd2fb1150, strict=0) at ../../gcc/cp/typeck.c:1361
#14 0x00000000012ab40a in comp_template_parms (parms1=<optimized out>,
parms2=<optimized out>) at ../../gcc/cp/pt.c:3369
#15 0x0000000001178eb9 in structural_comptypes (t1=0x7fffd2fa9c78,
t2=0x7fffd2fb1150, strict=0) at ../../gcc/cp/typeck.c:1361
#16 0x00000000012ab40a in comp_template_parms (parms1=<optimized out>,
parms2=<optimized out>) at ../../gcc/cp/pt.c:3369
#17 0x0000000001178eb9 in structural_comptypes (t1=0x7fffd2fa9c78,
t2=0x7fffd2fb1150, strict=0) at ../../gcc/cp/typeck.c:1361
#18 0x00000000012ab40a in comp_template_parms (parms1=<optimized out>,
parms2=<optimized out>) at ../../gcc/cp/pt.c:3369
#19 0x0000000001178eb9 in structural_comptypes (t1=0x7fffd2fa9c78,
t2=0x7fffd2fb1150, strict=0) at ../../gcc/cp/typeck.c:1361
While GCC 12.1 rejects the code with:
g++ pipeline.ii -c -std=gnu++17 -c
In file included from
../../buildtools/third_party/libc++/trunk/include/__locale:15,
from
../../buildtools/third_party/libc++/trunk/include/ios:215,
from
../../buildtools/third_party/libc++/trunk/include/ostream:137,
from ../../src/common/globals.h:12,
from ../../src/compiler/pipeline.h:12,
from ../../src/compiler/pipeline.cc:5:
../../buildtools/third_party/libc++/trunk/include/string:742:13: error:
anonymous struct with base classes
Rejected since r12-2627-g3ead06c1cff8fb42.
