158099. cc1: warnings being treated as errors /GCC/gcc-live-trunk/gcc/expr.c: In function ‘block_move_libcall_safe_for_call_parm’: /GCC/gcc-live-trunk/gcc/expr.c:1254:8: error: variable ‘fn’ set but not used make[3]: *** [expr.o] Error 1 BUT: ====== static bool block_move_libcall_safe_for_call_parm (void) { #if defined (REG_PARM_STACK_SPACE) 1254==>>> tree fn; #endif /* If arguments are pushed on the stack, then they're safe. */ if (PUSH_ARGS) return true; /* If registers go on the stack anyway, any argument is sure to clobber an outgoing argument. */ #if defined (REG_PARM_STACK_SPACE) fn = emit_block_move_libcall_fn (false); if (OUTGOING_REG_PARM_STACK_SPACE ((!fn ? NULL_TREE : TREE_TYPE (fn))) && REG_PARM_STACK_SPACE (fn) != 0) return false; #endif /* If any argument goes in memory, then it might clobber an outgoing
Created attachment 20331 [details] gcc46-pr43681.patch Untested patch.
(In reply to comment #1) > Created an attachment (id=20331) [edit] > gcc46-pr43681.patch > > Untested patch. yes, thanks that works. - I couldn't see what to do there; see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43684 for the ones I think I can resolve.
Subject: Bug 43681 Author: jakub Date: Thu Apr 8 10:12:35 2010 New Revision: 158111 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=158111 Log: PR bootstrap/43681 * expr.c (block_move_libcall_safe_for_call_parm): Avoid set but not used variable warning. Modified: trunk/gcc/ChangeLog trunk/gcc/expr.c
bootstrapped {powerpc,i686}-apple-darwin9. this is fixed. (other 'set but not used' issues at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43684 remain)
(In reply to comment #1) > Created an attachment (id=20331) [edit] > gcc46-pr43681.patch > > Untested patch. How about: Index: expr.c =================================================================== --- expr.c (revision 158277) +++ expr.c (working copy) @@ -1251,7 +1251,7 @@ block_move_libcall_safe_for_call_parm (void) { #if defined (REG_PARM_STACK_SPACE) - tree fn; + tree fn ATTRIBUTE_UNUSED; #endif /* If arguments are pushed on the stack, then they're safe. */