[Bug middle-end/105533] UBSAN: gcc/expmed.cc:3272:26: runtime error: signed integer overflow: -9223372036854775808 - 1 cannot be represented in type 'long int'

["jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105533

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I see both
/usr/src/gcc/obj5/./gcc/xgcc -B/usr/src/gcc/obj5/./gcc/
-B/usr/local/x86_64-pc-linux-gnu/bin/ -B/usr/local/x86_64-pc-linux-gnu/lib/
-isystem /usr/local/x86_64-pc-linux-gnu/include -isystem
/usr/local/x86_64-pc-linux-gnu/sys-include   -fno-checking -g -O3 -O2  -g -O3
-DIN_GCC   -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition  -isystem
./include  -fpic -mlong-double-80 -DUSE_ELF_SYMVER -fcf-protection -mshstk -g
-DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector  -fpic -mlong-double-80
-DUSE_ELF_SYMVER -fcf-protection -mshstk -I. -I. -I../.././gcc
-I../../../libgcc -I../../../libgcc/. -I../../../libgcc/../gcc
-I../../../libgcc/../include -I../../../libgcc/config/libbid
-DENABLE_DECIMAL_BID_FORMAT -DHAVE_CC_TLS  -DUSE_TLS  -o bid128_add.o -MT
bid128_add.o -MD -MP -MF bid128_add.dep -c
../../../libgcc/config/libbid/bid128_add.c
../../gcc/expmed.cc:3288:26: runtime error: signed integer overflow:
-9223372036854775808 - 1 cannot be represented in type 'long int'
/usr/src/gcc/obj5/./gcc/xgcc -B/usr/src/gcc/obj5/./gcc/
-B/usr/local/x86_64-pc-linux-gnu/bin/ -B/usr/local/x86_64-pc-linux-gnu/lib/
-isystem /usr/local/x86_64-pc-linux-gnu/include -isystem
/usr/local/x86_64-pc-linux-gnu/sys-include   -fno-checking -g -O3 -O2  -g -O3
-DIN_GCC   -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition  -isystem
./include  -fpic -mlong-double-80 -DUSE_ELF_SYMVER -fcf-protection -mshstk -g
-DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector  -fpic -mlong-double-80
-DUSE_ELF_SYMVER -fcf-protection -mshstk -I. -I. -I../.././gcc
-I../../../libgcc -I../../../libgcc/. -I../../../libgcc/../gcc
-I../../../libgcc/../include -I../../../libgcc/config/libbid
-DENABLE_DECIMAL_BID_FORMAT -DHAVE_CC_TLS  -DUSE_TLS  -o unwind-dw2.o -MT
unwind-dw2.o -MD -MP -MF unwind-dw2.dep -fexceptions -c
../../../libgcc/unwind-dw2.c -fvisibility=hidden -DHIDE_EXPORTS
../../gcc/poly-int.h:1089:5: runtime error: left shift of negative value -8
so will have a look at those.