patches/gcc/3.3.3/pr11736-1-test.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sat Feb 24 11:00:05 2007 +0000 (2007-02-24)
changeset 1 eeea35fbf182
permissions -rw-r--r--
Add the full crosstool-NG sources to the new repository of its own.
You might just say: 'Yeah! crosstool-NG's got its own repo!".
Unfortunately, that's because the previous repo got damaged beyond repair and I had no backup.
That means I'm putting backups in place in the afternoon.
That also means we've lost history... :-(
     1 --- /dev/null	Sat Dec 14 13:56:51 2002
     2 +++ gcc-3.3.1/gcc/testsuite/gcc.dg/pr11736-1.c	Sun Sep 14 14:26:33 2003
     3 @@ -0,0 +1,45 @@
     4 +/* PR optimization/11736
     5 + * Reporter: marcus@mc.pp.se
     6 + * Summary:  Stackpointer messed up on SuperH
     7 + * Keywords: wrong-code
     8 + * Description:
     9 + * When a function with 5 arguments is called in both branches of a
    10 + * conditional, and only the last argument differs, the code to push that
    11 + * last argument on the stack gets confused. 
    12 + * Space for the fifth argument is reserved on the stack by the
    13 + * instruction I have marked as "A".  However, if the else-branch is
    14 + * taken the stackpointer is decremented _again_ at "B".  This
    15 + * decrementation is never restored, and it is only due to the
    16 + * restoration of r15 from r14 that the function works at all.  With
    17 + * -fomit-frame-pointer it will crash.
    18 + *
    19 + * Testcase tweaked by dank@kegel.com
    20 + * Not marked as xfail since it's a regression from hardhat 2.0 gcc-2.97 
    21 + * and dodes gcc-3.0.2
    22 + */
    23 +
    24 +/* { dg-do run } */
    25 +/* { dg-options "-O1 -fomit-frame-pointer" } */
    26 +
    27 +int expected_e;
    28 +
    29 +void bar(int a, int b, int c, int d, int e)
    30 +{
    31 +	if (e != expected_e)
    32 +		abort();
    33 +}
    34 +
    35 +void foo(int a)
    36 +{
    37 +	if (a)
    38 +		bar(0, 0, 0, 0, 1);
    39 +	else
    40 +		bar(0, 0, 0, 0, 0);	/* stack pointer decremented extra time here, causing segfault */
    41 +}
    42 +
    43 +int main(int argc, char **argv)
    44 +{
    45 +	for (expected_e = 0; expected_e < 2; expected_e++)
    46 +		foo(expected_e);
    47 +	return 0;
    48 +}