Hi, The current trunk have no support for the __stpncpy_chk function. As the latest OS X (10.7 aka Lion) now defines stpncpy as a call to builtin__stpncpy_chk for GNUC compliant compiler, the following code won't link:
#include <string.h>
int main(){
char string[10];
stpncpy(string,"abcd",8);
return 0;
}
Undefined symbols for architecture x86_64:
"___builtin___stpncpy_chk", referenced from:
_main in ccGFZoZV.o
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status
This patch add support for this builtin.
Bootstrapped and tested without regression on darwin x86_64.
Romain Geissler
gcc/
2011-11-28 Romain Geissler <romain.geiss...@gmail.com>
* builtins.def (BUILT_IN_STPNCPY_CHK): New definition.
* builtins.c (expand_builtin, fold_builtin_4, maybe_emit_chk_warning):
Add BUILT_IN_STPNCPY_CHK case.
* gimple-fold.c (gimple_fold_builtin): Likewise.
* tree-object-size.c (pass_through_call): Likewise.
* tree-ssa-alias.c (ref_maybe_used_by_call_p_1,
call_may_clobber_ref_p_1): Likewise.
* tree-ssa-structalias.c (find_func_aliases_for_builtin_call,
find_func_clobbers): Likewise.
* tree.h (fold_builtin_strncpy_chk): Rename to fold_builtin_stxncpy_chk
* builtins.c (fold_builtin_strncpy_chk): Likewise.
Rewrite stpncpy_chk calls to strncpy_chk calls if returned value is
ignored.
gcc/testsuite/
2011-11-28 Romain Geissler <romain.geiss...@gmail.com>
* gcc.c-torture/execute/builtins/chk.h (stpncpy, stpncpy_disallowed):
New definitions.
* gcc.c-torture/execute/builtins/lib/chk.c (stpncpy_disallowed):
Likewise.
(stpncpy, __stpncpy_chk): New functions.
* gcc.c-torture/execute/builtins/stpncpy-chk-lib.c: New file.
* gcc.c-torture/execute/builtins/stpncpy-chk.c: Likewise.
lion_build.patch
Description: Binary data
