I just tried to compile the GNU CC version 4.2 snapshot 20060211 with the Intel C compiler.
It said ../../src/gcc-4.2-20060211/gcc/c-decl.c(4523): remark #593: variable "type_as_written" was set but never used ../../src/gcc-4.2-20060211/gcc/tree-cfg.c(3207): remark #593: variable "src" was set but never used ../../src/gcc-4.2-20060211/gcc/tree-dfa.c(732): remark #593: variable "v_ann" was set but never used ../../src/gcc-4.2-20060211/gcc/tree-into-ssa.c(1441): remark #593: variable "ann" was set but never used ../../src/gcc-4.2-20060211/gcc/tree-outof-ssa.c(1892): remark #593: variable "ann" was set but never used ../../src/gcc-4.2-20060211/gcc/tree-outof-ssa.c(1843): remark #593: variable "changed" was set but never used ../../src/gcc-4.2-20060211/gcc/tree-ssa-copy.c(352): remark #593: variable "lhs" was set but never used ../../src/gcc-4.2-20060211/gcc/tree-ssa-copy.c(674): remark #593: variable "ann" was set but never used ../../src/gcc-4.2-20060211/gcc/tree-ssa-operands.c(957): remark #593: variable "ann" was set but never used ../../src/gcc-4.2-20060211/gcc/tree-ssa-alias.c(1430): remark #593: variable "n_vars" was set but never used I've checked all of these, and they all look like local variable that can safely be deleted to me. -- Summary: 10 * local variable set but not used Product: gcc Version: 4.2.0 Status: UNCONFIRMED Severity: enhancement Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: dcb314 at hotmail dot com GCC host triplet: x86_64-suse-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26245