http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55371
Bug #: 55371
Summary: [asan] False -Werror=uninitialized
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: hjl.to...@gmail.com
[hjl@gnu-tools-1 gcc]$
/export/build/gnu/gcc-asan/build-x86_64-linux/./prev-gcc/g++
-B/export/build/gnu/gcc-asan/build-x86_64-linux/./prev-gcc/
-B/usr/gcc-4.8.0/x86_64-unknown-linux-gnu/bin/ -nostdinc++
-B/export/build/gnu/gcc-asan/build-x86_64-linux/prev-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs
-B/export/build/gnu/gcc-asan/build-x86_64-linux/prev-x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs
-B/export/build/gnu/gcc-asan/build-x86_64-linux/prev-x86_64-unknown-linux-gnu/libsanitizer/asan/.libs
-I/export/build/gnu/gcc-asan/build-x86_64-linux/prev-x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu
-I/export/build/gnu/gcc-asan/build-x86_64-linux/prev-x86_64-unknown-linux-gnu/libstdc++-v3/include
-I/export/gnu/import/git/sources/gcc/libstdc++-v3/libsupc++
-L/export/build/gnu/gcc-asan/build-x86_64-linux/prev-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs
-L/export/build/gnu/gcc-asan/build-x86_64-linux/prev-x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs
-c -g -O2 -faddress-sanitizer -DIN_GCC -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wmissing-format-attribute -pedantic -Wno-long-long
-Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common
-DHAVE_CONFIG_H -I. -I. -I/export/gnu/import/git/sources/gcc/gcc
-I/export/gnu/import/git/sources/gcc/gcc/.
-I/export/gnu/import/git/sources/gcc/gcc/../include
-I/export/gnu/import/git/sources/gcc/gcc/../libcpp/include
-I/export/gnu/import/git/sources/gcc/gcc/../libdecnumber
-I/export/gnu/import/git/sources/gcc/gcc/../libdecnumber/bid -I../libdecnumber
-I/export/gnu/import/git/sources/gcc/gcc/../libbacktrace
/export/gnu/import/git/sources/gcc/gcc/explow.c -o explow.o
/export/gnu/import/git/sources/gcc/gcc/explow.c: In function ‘rtx_def*
plus_constant(machine_mode, rtx, long int)’:
/export/gnu/import/git/sources/gcc/gcc/explow.c:84:7: error: ‘y’ may be used
uninitialized in this function [-Werror=uninitialized]
rtx y;
^
cc1plus: all warnings being treated as errors
[hjl@gnu-tools-1 gcc]$
/export/build/gnu/gcc-asan/build-x86_64-linux/./prev-gcc/g++
-B/export/build/gnu/gcc-asan/build-x86_64-linux/./prev-gcc/
-B/usr/gcc-4.8.0/x86_64-unknown-linux-gnu/bin/ -nostdinc++
-B/export/build/gnu/gcc-asan/build-x86_64-linux/prev-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs
-B/export/build/gnu/gcc-asan/build-x86_64-linux/prev-x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs
-B/export/build/gnu/gcc-asan/build-x86_64-linux/prev-x86_64-unknown-linux-gnu/libsanitizer/asan/.libs
-I/export/build/gnu/gcc-asan/build-x86_64-linux/prev-x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu
-I/export/build/gnu/gcc-asan/build-x86_64-linux/prev-x86_64-unknown-linux-gnu/libstdc++-v3/include
-I/export/gnu/import/git/sources/gcc/libstdc++-v3/libsupc++
-L/export/build/gnu/gcc-asan/build-x86_64-linux/prev-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs
-L/export/build/gnu/gcc-asan/build-x86_64-linux/prev-x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs
-c -g -O2 -DIN_GCC -fno-exceptions -fno-rtti -fasynchronous-unwind-tables
-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute
-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror
-fno-common -DHAVE_CONFIG_H -I. -I. -I/export/gnu/import/git/sources/gcc/gcc
-I/export/gnu/import/git/sources/gcc/gcc/.
-I/export/gnu/import/git/sources/gcc/gcc/../include
-I/export/gnu/import/git/sources/gcc/gcc/../libcpp/include
-I/export/gnu/import/git/sources/gcc/gcc/../libdecnumber
-I/export/gnu/import/git/sources/gcc/gcc/../libdecnumber/bid -I../libdecnumber
-I/export/gnu/import/git/sources/gcc/gcc/../libbacktrace
/export/gnu/import/git/sources/gcc/gcc/explow.c -o explow.o
[hjl@gnu-tools-1 gcc]$
