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| author | Maxim Kuvyrkov <maxim@codesourcery.com> | 2010-05-12 11:05:19 +0000 |
|---|---|---|
| committer | Maxim Kuvyrkov <mkuvyrkov@gcc.gnu.org> | 2010-05-12 11:05:19 +0000 |
| commit | 623a6941fa3db376bde6179eb7ca2f3b37b89518 (patch) | |
| tree | 36f64b5002b88b0f635e32f7ffb14e7914f56ef2 /gcc | |
| parent | aeecf17ca32de8fcec84ad49f7d76a582515e84b (diff) | |
| download | gcc-623a6941fa3db376bde6179eb7ca2f3b37b89518.zip gcc-623a6941fa3db376bde6179eb7ca2f3b37b89518.tar.gz gcc-623a6941fa3db376bde6179eb7ca2f3b37b89518.tar.bz2 | |
targhooks.c (default_stack_protect_guard): Avoid sharing RTL for __stack_chk_guard.
* targhooks.c (default_stack_protect_guard): Avoid sharing RTL
for __stack_chk_guard.
* gcc.target/m68k/20100512-1.c: New.
From-SVN: r159310
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/targhooks.c | 7 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/m68k/20100512-1.c | 16 |
4 files changed, 32 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b9b6795..b63cde5 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2010-05-12 Maxim Kuvyrkov <maxim@codesourcery.com> + + * targhooks.c (default_stack_protect_guard): Avoid sharing RTL + for __stack_chk_guard. + 2010-05-11 Jakub Jelinek <jakub@redhat.com> * c-opts.c (c_common_parse_file): If start_end_main_source_file, diff --git a/gcc/targhooks.c b/gcc/targhooks.c index 8df0de4..2c0a65d 100644 --- a/gcc/targhooks.c +++ b/gcc/targhooks.c @@ -499,6 +499,8 @@ default_stack_protect_guard (void) if (t == NULL) { + rtx x; + t = build_decl (UNKNOWN_LOCATION, VAR_DECL, get_identifier ("__stack_chk_guard"), ptr_type_node); @@ -510,6 +512,11 @@ default_stack_protect_guard (void) DECL_ARTIFICIAL (t) = 1; DECL_IGNORED_P (t) = 1; + /* Do not share RTL as the declaration is visible outside of + current function. */ + x = DECL_RTL (t); + RTX_FLAG (x, used) = 1; + stack_chk_guard_decl = t; } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index a1275c8..4daeaa6 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2010-05-12 Maxim Kuvyrkov <maxim@codesourcery.com> + + * gcc.target/m68k/20100512-1.c: New. + 2010-05-12 Eric Botcazou <ebotcazou@adacore.com> * gnat.dg/lto8.adb: New test. diff --git a/gcc/testsuite/gcc.target/m68k/20100512-1.c b/gcc/testsuite/gcc.target/m68k/20100512-1.c new file mode 100644 index 0000000..d07bb51 --- /dev/null +++ b/gcc/testsuite/gcc.target/m68k/20100512-1.c @@ -0,0 +1,16 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fstack-protector" } */ +/* { dg-require-effective-target fstack_protector } */ +/* There should be 2 references to __stack_chk_guard in every function. */ +/* { dg-final { scan-assembler-times "__stack_chk_guard" 4 } } */ + +#include <stdlib.h> +#include <string.h> +void doTest1(void) { + volatile char foo[10]; + memset((void *)foo, 1, 100); +} +void doTest2(void) { + volatile char foo[10]; + memset((void *)foo, 1, 100); +} |