gcc (Ubuntu 4.4.3-4ubuntu5) 4.4.3 typedef unsigned char uint8_t; void f(uint8_t __restrict__ foo[]) { // no warnings/errors } void f2(unsigned char __restrict__ foo[]) { // doesn't compile:: // test.cc:6: error: __restrict__ qualifiers cannot be applied to unsigned char }
The two functions should be equivalent, I think -- both erroring or neither erroring. Verbose details follow. $ gcc -v -save-temps test.cc Using built-in specs. Target: i486-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.4.3-4ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-plugin --enable-objc-gc --enable-targets=all --disable-werror --with-arch-32=i486 --with-tune=generic --enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu --target=i486-linux-gnu Thread model: posix gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) COLLECT_GCC_OPTIONS='-v' '-save-temps' '-mtune=generic' '-march=i486' /usr/lib/gcc/i486-linux-gnu/4.4.3/cc1plus -E -quiet -v -D_GNU_SOURCE test.cc -D_FORTIFY_SOURCE=2 -mtune=generic -march=i486 -fpch-preprocess -fstack-protector -o test.ii ignoring nonexistent directory "/usr/local/include/i486-linux-gnu" ignoring nonexistent directory "/usr/lib/gcc/i486-linux-gnu/4.4.3/../../../../i486-linux-gnu/include" ignoring nonexistent directory "/usr/include/i486-linux-gnu" #include "..." search starts here: #include <...> search starts here: /usr/include/c++/4.4 /usr/include/c++/4.4/i486-linux-gnu /usr/include/c++/4.4/backward /usr/local/include /usr/lib/gcc/i486-linux-gnu/4.4.3/include /usr/lib/gcc/i486-linux-gnu/4.4.3/include-fixed /usr/include End of search list. COLLECT_GCC_OPTIONS='-v' '-save-temps' '-mtune=generic' '-march=i486' /usr/lib/gcc/i486-linux-gnu/4.4.3/cc1plus -fpreprocessed test.ii -quiet -dumpbase test.cc -mtune=generic -march=i486 -auxbase test -version -fstack-protector -o test.s GNU C++ (Ubuntu 4.4.3-4ubuntu5) version 4.4.3 (i486-linux-gnu) compiled by GNU C version 4.4.3, GMP version 4.3.2, MPFR version 2.4.2-p1. GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 GNU C++ (Ubuntu 4.4.3-4ubuntu5) version 4.4.3 (i486-linux-gnu) compiled by GNU C version 4.4.3, GMP version 4.3.2, MPFR version 2.4.2-p1. GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 35224f2c24023afb0a5be7befe8d5f3f test.cc:6: error: __restrict__ qualifiers cannot be applied to unsigned char -- Summary: __restrict__ inconsistent in presence of typedefs Product: gcc Version: 4.4.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: evan at chromium dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45697