https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67088
Bug ID: 67088 Summary: Incorrect location of error on invalid type used in bit-field declaration Product: gcc Version: 6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: chengniansun at gmail dot com Target Milestone: --- I define a struct with a bit field but declare it as "double". Gcc emits an error on it but point to the start of the line, not the location of this attribution declaration. $: cat t.c struct S { double d; double s:1; }; $: gcc-trunk -c t.c t.c:2:3: error: bit-field āsā has invalid type double d; double s:1; ^ $: clang-trunk -c t.c t.c:2:20: error: bit-field 's' has non-integral type 'double' double d; double s:1; ^ ~ 1 error generated. $: gcc-trunk -v Using built-in specs. COLLECT_GCC=gcc-trunk COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-trunk/configure --enable-languages=c,c++,objc,obj-c++,fortran,lto --disable-werror --with-gmp=/usr/local/gcc-trunk --with-mpfr=/usr/local/gcc-trunk --with-mpc=/usr/local/gcc-trunk --with-cloog=/usr/local/gcc-trunk --prefix=/usr/local/gcc-trunk Thread model: posix gcc version 6.0.0 20150731 (experimental) [trunk revision 226431] (GCC) $: