diff options
Diffstat (limited to 'toolchain-layer/recipes-devtools/gcc/gcc-4.5/fedora/gcc43-c++-builtin-redecl.patch')
| -rw-r--r-- | toolchain-layer/recipes-devtools/gcc/gcc-4.5/fedora/gcc43-c++-builtin-redecl.patch | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/toolchain-layer/recipes-devtools/gcc/gcc-4.5/fedora/gcc43-c++-builtin-redecl.patch b/toolchain-layer/recipes-devtools/gcc/gcc-4.5/fedora/gcc43-c++-builtin-redecl.patch new file mode 100644 index 0000000..a149eae --- /dev/null +++ b/toolchain-layer/recipes-devtools/gcc/gcc-4.5/fedora/gcc43-c++-builtin-redecl.patch @@ -0,0 +1,114 @@ +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. + +Index: gcc/cp/decl.c +=================================================================== +--- gcc/cp/decl.c.orig 2010-04-01 11:48:46.000000000 -0700 ++++ gcc/cp/decl.c 2010-06-25 10:10:54.749131719 -0700 +@@ -2021,23 +2021,21 @@ + 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 just redeclaring a + function. */ +Index: gcc/testsuite/gcc.dg/builtins-65.c +=================================================================== +--- gcc/testsuite/gcc.dg/builtins-65.c.orig 2009-06-26 02:02:04.000000000 -0700 ++++ gcc/testsuite/gcc.dg/builtins-65.c 2010-06-25 10:10:54.784464429 -0700 +@@ -1,3 +1,28 @@ ++/* { 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" } } */ + /* { dg-do link } */ + /* { dg-options "-O2 -ffast-math" } */ + /* { dg-require-effective-target c99_runtime } */ +Index: gcc/testsuite/g++.dg/ext/builtin10.C +=================================================================== +--- gcc/testsuite/g++.dg/ext/builtin10.C.orig 2009-02-02 03:27:50.000000000 -0800 ++++ gcc/testsuite/g++.dg/ext/builtin10.C 2010-06-25 10:10:54.816467202 -0700 +@@ -1,3 +1,30 @@ ++// { 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" } } + // { dg-do compile { target correct_iso_cpp_string_wchar_protos } } + // { dg-options "-O2 -fdump-tree-optimized" } + |