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From: "aldot at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/107743] New: expmed: extract_bit_field_1: maybe-uninitialized warning Date: Fri, 18 Nov 2022 07:27:13 +0000 [thread overview] Message-ID: <bug-107743-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107743 Bug ID: 107743 Summary: expmed: extract_bit_field_1: maybe-uninitialized warning Product: gcc Version: 13.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: aldot at gcc dot gnu.org Target Milestone: --- current trunk around r13-4134 /scratch/obj.x86_64/gcc-13.mine/./prev-gcc/xg++ -B/scratch/obj.x86_64/gcc-13.mine/./prev-gcc/ -B/opt/x86_64/gcc-13.mine/x86_64-pc-linux-gnu/bin/ -nostdinc++ -B/scratch/obj.x86_64/gcc-13.mine/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs -B/scratch/obj.x86_64/gcc-13.mine/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs -I/scratch/obj.x86_64/gcc-13.mine/prev-x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu -I/scratch/obj.x86_64/gcc-13.mine/prev-x86_64-pc-linux-gnu/libstdc++-v3/include -I/scratch/src/gcc-13.mine/libstdc++-v3/libsupc++ -L/scratch/obj.x86_64/gcc-13.mine/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs -L/scratch/obj.x86_64/gcc-13.mine/prev-x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs -fno-PIE -c -O2 -g3 -ggdb3 -gdwarf-5 -pipe -fno-checking -gtoggle -DIN_GCC -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -fno-common -DHAVE_CONFIG_H -I. -I. -I../../../src/gcc-13.mine/gcc -I../../../src/gcc-13.mine/gcc/. -I../../../src/gcc-13.mine/gcc/../include -I../../../src/gcc-13.mine/gcc/../libcpp/include -I../../../src/gcc-13.mine/gcc/../libcody -I../../../src/gcc-13.mine/gcc/../libdecnumber -I../../../src/gcc-13.mine/gcc/../libdecnumber/bid -I../libdecnumber -I../../../src/gcc-13.mine/gcc/../libbacktrace -o expmed.o -MT expmed.o -MMD -MP -MF ./.deps/expmed.TPo ../../../src/gcc-13.mine/gcc/expmed.cc ../../../src/gcc-13.mine/gcc/expmed.cc: In function 'rtx_def* extract_bit_field_1(rtx, poly_uint64, poly_uint64, int, rtx, machine_mode, machine_mode, bool, bool, rtx_def**)': ../../../src/gcc-13.mine/gcc/expmed.cc:1838:45: warning: '*(unsigned int*)((char*)&imode + offsetof(scalar_int_mode, scalar_int_mode::m_mode))' may be used uninitialized [-Wmaybe-uninitialized] 1838 | rtx sub = extract_bit_field_as_subreg (mode1, op0, imode, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~ 1839 | bitsize, bitnum); | ~~~~~~~~~~~~~~~~ ../../../src/gcc-13.mine/gcc/expmed.cc:1798:19: note: '*(unsigned int*)((char*)&imode + offsetof(scalar_int_mode, scalar_int_mode::m_mode))' was declared here 1798 | scalar_int_mode imode; | ^~~~~
next reply other threads:[~2022-11-18 7:27 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-11-18 7:27 aldot at gcc dot gnu.org [this message] 2022-11-18 8:10 ` [Bug middle-end/107743] " rguenth at gcc dot gnu.org 2022-11-19 18:01 ` aldot at gcc dot gnu.org
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