http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52127
Bug #: 52127 Summary: pedantic-errors is inconsistent in its behavior Classification: Unclassified Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassig...@gcc.gnu.org ReportedBy: jeng...@medozas.de Created attachment 26577 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26577 testcase Description: The attached testcase, when its # lines are stripped, suddenly produces an error. Actions: $ gcc -c noprob.i -std=gnu99 -pedantic -pedantic-errors $ grep -v '^#' noprob.i >boom.i $ gcc -c boom.i -std=gnu99 -pedantic -pedantic-errors Actual result: boom.i:138:3: error: ISO C99 doesn’t support unnamed structs/unions [-pedantic] Expected result: - Either have noprob.i fail as well (because it contains the same code), or - Have boom.i succeed, because I am compiling with GNU99 (not ISO C99) where, I believe, unnamed structs are ok. Additional info: Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib64/gcc/x86_64-suse-linux/4.6/lto-wrapper Target: x86_64-suse-linux Configured with: ../configure --prefix=/usr --infodir=/usr/share/info --mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64 --enable-languages=c,c++,objc,fortran,obj-c++,java,ada --enable-checking=release --with-gxx-include-dir=/usr/include/c++/4.6 --enable-ssp --disable-libssp --disable-plugin --with-bugurl=http://bugs.opensuse.org/ --with-pkgversion='SUSE Linux' --disable-libgcj --disable-libmudflap --with-slibdir=/lib64 --with-system-zlib --enable-__cxa_atexit --enable-libstdcxx-allocator=new --disable-libstdcxx-pch --enable-version-specific-runtime-libs --program-suffix=-4.6 --enable-linux-futex --without-system-libunwind --with-arch-32=i586 --with-tune=generic --build=x86_64-suse-linux Thread model: posix gcc version 4.6.2 (SUSE Linux) openSUSE 12.1 Also occurs with gcc version 4.7.0 20120111 [trunk revision 183092] (SUSE Linux)