diff options
Diffstat (limited to 'packages/gcc/gcc-4.3.3/fedora/gcc43-c++-builtin-redecl.patch')
| -rw-r--r-- | packages/gcc/gcc-4.3.3/fedora/gcc43-c++-builtin-redecl.patch | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/packages/gcc/gcc-4.3.3/fedora/gcc43-c++-builtin-redecl.patch b/packages/gcc/gcc-4.3.3/fedora/gcc43-c++-builtin-redecl.patch new file mode 100644 index 0000000000..77655ad792 --- /dev/null +++ b/packages/gcc/gcc-4.3.3/fedora/gcc43-c++-builtin-redecl.patch @@ -0,0 +1,102 @@ +2007-10-02 Jakub Jelinek <jakub@redhat.com> + + * decl.c (duplicate_decls): When redeclaring a builtin function, + keep the merged decl builtin whenever types match, even if new + decl defines a function. + + * gcc.dg/builtins-65.c: New test. + * g++.dg/ext/builtin10.C: New test. + +--- gcc/cp/decl.c.jj 2007-10-01 22:11:09.000000000 +0200 ++++ gcc/cp/decl.c 2007-10-02 11:39:46.000000000 +0200 +@@ -1988,23 +1988,21 @@ duplicate_decls (tree newdecl, tree oldd + DECL_ARGUMENTS (olddecl) = DECL_ARGUMENTS (newdecl); + DECL_RESULT (olddecl) = DECL_RESULT (newdecl); + } ++ /* If redeclaring a builtin function, it stays built in. */ ++ if (types_match && DECL_BUILT_IN (olddecl)) ++ { ++ DECL_BUILT_IN_CLASS (newdecl) = DECL_BUILT_IN_CLASS (olddecl); ++ DECL_FUNCTION_CODE (newdecl) = DECL_FUNCTION_CODE (olddecl); ++ /* If we're keeping the built-in definition, keep the rtl, ++ regardless of declaration matches. */ ++ COPY_DECL_RTL (olddecl, newdecl); ++ } + if (new_defines_function) + /* If defining a function declared with other language + linkage, use the previously declared language linkage. */ + SET_DECL_LANGUAGE (newdecl, DECL_LANGUAGE (olddecl)); + else if (types_match) + { +- /* If redeclaring a builtin function, and not a definition, +- it stays built in. */ +- if (DECL_BUILT_IN (olddecl)) +- { +- DECL_BUILT_IN_CLASS (newdecl) = DECL_BUILT_IN_CLASS (olddecl); +- DECL_FUNCTION_CODE (newdecl) = DECL_FUNCTION_CODE (olddecl); +- /* If we're keeping the built-in definition, keep the rtl, +- regardless of declaration matches. */ +- COPY_DECL_RTL (olddecl, newdecl); +- } +- + DECL_RESULT (newdecl) = DECL_RESULT (olddecl); + /* Don't clear out the arguments if we're redefining a function. */ + if (DECL_ARGUMENTS (olddecl)) +--- gcc/testsuite/gcc.dg/builtins-65.c.jj 2007-10-02 11:23:51.000000000 +0200 ++++ gcc/testsuite/gcc.dg/builtins-65.c 2007-10-02 11:24:12.000000000 +0200 +@@ -0,0 +1,25 @@ ++/* { dg-do compile } */ ++/* { dg-options "-O2" } */ ++ ++typedef __SIZE_TYPE__ size_t; ++extern void __chk_fail (void); ++extern int snprintf (char *, size_t, const char *, ...); ++extern inline __attribute__((gnu_inline, always_inline)) int snprintf (char *a, size_t b, const char *fmt, ...) ++{ ++ if (__builtin_object_size (a, 0) != -1UL && __builtin_object_size (a, 0) < b) ++ __chk_fail (); ++ return __builtin_snprintf (a, b, fmt, __builtin_va_arg_pack ()); ++} ++extern int snprintf (char *, size_t, const char *, ...) __asm ("mysnprintf"); ++ ++char buf[10]; ++ ++int ++main (void) ++{ ++ snprintf (buf, 10, "%d%d\n", 10, 10); ++ return 0; ++} ++ ++/* { dg-final { scan-assembler "mysnprintf" } } */ ++/* { dg-final { scan-assembler-not "__chk_fail" } } */ +--- gcc/testsuite/g++.dg/ext/builtin10.C.jj 2007-10-02 11:19:45.000000000 +0200 ++++ gcc/testsuite/g++.dg/ext/builtin10.C 2007-10-02 11:23:26.000000000 +0200 +@@ -0,0 +1,27 @@ ++// { dg-do compile } ++// { dg-options "-O2" } ++ ++typedef __SIZE_TYPE__ size_t; ++extern "C" { ++extern void __chk_fail (void); ++extern int snprintf (char *, size_t, const char *, ...); ++extern inline __attribute__((gnu_inline, always_inline)) int snprintf (char *a, size_t b, const char *fmt, ...) ++{ ++ if (__builtin_object_size (a, 0) != -1UL && __builtin_object_size (a, 0) < b) ++ __chk_fail (); ++ return __builtin_snprintf (a, b, fmt, __builtin_va_arg_pack ()); ++} ++extern int snprintf (char *, size_t, const char *, ...) __asm ("mysnprintf"); ++} ++ ++char buf[10]; ++ ++int ++main (void) ++{ ++ snprintf (buf, 10, "%d%d\n", 10, 10); ++ return 0; ++} ++ ++// { dg-final { scan-assembler "mysnprintf" } } ++// { dg-final { scan-assembler-not "__chk_fail" } } |