https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68062
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-10-23
CC| |ienkovich at gcc dot gnu.org
Version|unknown |5.2.0
Ever confirmed|0 |1
Known to fail| |4.9.2, 5.2.0, 6.0
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Looks like a C FE issue. The C++ FE also spits out bogus(?)
t.c: In function 'void ret(char)':
t.c:8:19: warning: narrowing conversion of 'a' from 'char' to 'unsigned char'
inside { } [-Wnarrowing]
uv4qi d={a,a,a,a};
^
t.c:8:19: warning: narrowing conversion of 'a' from 'char' to 'unsigned char'
inside { } [-Wnarrowing]
t.c:8:19: warning: narrowing conversion of 'a' from 'char' to 'unsigned char'
inside { } [-Wnarrowing]
t.c:8:19: warning: narrowing conversion of 'a' from 'char' to 'unsigned char'
inside { } [-Wnarrowing]
t.c:5:6: error: mismatching comparison operand types
void ret(char a)
^
v4qi
uv4qi
D.2265 = c != d;
t.c:5:6: internal compiler error: verify_gimple failed
Note that GCC 4.8 rejects the comparison with
t.c: In function ‘ret’:
t.c:9:9: error: comparing vectors with different element types
v = (c!=d);
^
With -funsigned-char the ICE is different:
> /abuild/rguenther/trunk-g/gcc/cc1plus -quiet t.c -funsigned-char
t.c: In function 'void ret(char)':
t.c:5:6: internal compiler error: in optab_handler, at optabs-query.h:32
void ret(char a)
^
0xae59c7 optab_handler(optab_tag, machine_mode)
/space/rguenther/src/svn/trunk/gcc/optabs-query.h:32
0x12a4f3e expand_vector_operations_1
I suppose that is Iljas fault (only happens on trunk).
