https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85163
Bug ID: 85163 Summary: [GCOV] A call statement with '==' , '||', and '&&' operators is wrongly marked as executed twice Product: gcc Version: 8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: gcov-profile Assignee: unassigned at gcc dot gnu.org Reporter: yangyibiao at nju dot edu.cn CC: marxin at gcc dot gnu.org Target Milestone: --- $ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper OFFLOAD_TARGET_NAMES=nvptx-none OFFLOAD_TARGET_DEFAULT=1 Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 8-20170923-1ubuntu2' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs --enable-languages=c,c++,go,brig,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-8 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie --with-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 8.0.0 20170923 (experimental) [trunk revision 253118] (Ubuntu 8-20170923-1ubuntu2) $ cat small.c int func(int i) { if (i > 0) return 1; return 0; } int main() { int i = 1, j = 2; func((i == 0) || (i && j, 1)); return 0; } $ gcc -w --coverage small.c; ./a.out; gcov-8 small.c; cat small.c.gcov File 'small.c' Lines executed:87.50% of 8 Creating 'small.c.gcov' -: 0:Source:small.c -: 0:Graph:small.gcno -: 0:Data:small.gcda -: 0:Runs:1 -: 0:Programs:1 1: 1:int func(int i) -: 2:{ 1: 3: if (i > 0) 1: 4: return 1; #####: 5: return 0; -: 6:} -: 7: 1: 8:int main() -: 9:{ 1: 10: int i = 1, j = 2; 2: 11: func((i == 0) || (i && j, 1)); 1: 12: return 0; -: 13:} Line 11 is wrongly marked as executed twice.