From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- .../gcc.c-torture/execute/frame-address.c | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 gcc/testsuite/gcc.c-torture/execute/frame-address.c (limited to 'gcc/testsuite/gcc.c-torture/execute/frame-address.c') diff --git a/gcc/testsuite/gcc.c-torture/execute/frame-address.c b/gcc/testsuite/gcc.c-torture/execute/frame-address.c new file mode 100644 index 000000000..109c2b229 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/frame-address.c @@ -0,0 +1,44 @@ +int check_fa_work (const char *, const char *) __attribute__((noinline)); +int check_fa_mid (const char *) __attribute__((noinline)); +int check_fa (char *) __attribute__((noinline)); +int how_much (void) __attribute__((noinline)); + +int check_fa_work (const char *c, const char *f) +{ + const char d = 0; + + if (c >= &d) + return c >= f && f >= &d; + else + return c <= f && f <= &d; +} + +int check_fa_mid (const char *c) +{ + const char *f = __builtin_frame_address (0); + + /* Prevent a tail call to check_fa_work, eliding the current stack frame. */ + return check_fa_work (c, f) != 0; +} + +int check_fa (char *unused) +{ + const char c = 0; + + /* Prevent a tail call to check_fa_mid, eliding the current stack frame. */ + return check_fa_mid (&c) != 0; +} + +int how_much (void) +{ + return 8; +} + +int main (void) +{ + char *unused = __builtin_alloca (how_much ()); + + if (!check_fa(unused)) + abort(); + return 0; +} -- cgit v1.2.3