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re PR debug/44223 (segmentation fault with -g -fsched-pressure) 

PR debug/44223
	* haifa-sched.c (schedule_insn): When freeing INSN_REG_USE_LIST,
	unchain each use from the cyclic next_regno_use chain first.

	* gcc.target/i386/pr44223.c: New test.

From-SVN: r159680
This commit is contained in:
Jakub Jelinek 2010-05-21 20:45:29 +02:00 committed by Jakub Jelinek
parent d49b6e1e33
commit 14db98d4a6
4 changed files with 53 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2010-05-21 Jakub Jelinek <jakub@redhat.com>
PR debug/44223
* haifa-sched.c (schedule_insn): When freeing INSN_REG_USE_LIST,
unchain each use from the cyclic next_regno_use chain first.
2010-05-21 Steven Bosscher <steven@gcc.gnu.org>
* real: Do not include gmp.h, mpfr.h, and mpc.h.

6
gcc/haifa-sched.c
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@ -1721,6 +1721,12 @@ schedule_insn (rtx insn)
/* Unknown location doesn't use any registers. */
for (use = INSN_REG_USE_LIST (dbg); use != NULL; use = next)
{
struct reg_use_data *prev = use;
/* Remove use from the cyclic next_regno_use chain first. */
while (prev->next_regno_use != use)
prev = prev->next_regno_use;
prev->next_regno_use = use->next_regno_use;
next = use->next_insn_use;
free (use);
}

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2010-05-21 Jakub Jelinek <jakub@redhat.com>
PR debug/44223
* gcc.target/i386/pr44223.c: New test.
2010-05-21 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* gcc.target/i386/pr25993.c: Use @function as type specifier.

36
gcc/testsuite/gcc.target/i386/pr44223.c Normal file
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@ -0,0 +1,36 @@
/* PR debug/44223 */
/* { dg-do compile } */
/* { dg-options "-O3 -fsched-pressure -fschedule-insns -fpic -march=core2 -g" { target fpic } } */
struct S { unsigned int s1; int s2; };
struct T { int t; };
extern void extfn (struct S *);
static inline void
foo (struct S *s, unsigned char *x, int y)
{
s->s2 = 32;
}
static inline void
bar (struct S *s, int n, unsigned int x)
{
unsigned int s1;
int s2;
s1 = s->s1;
s2 = s->s2;
if (n < s2)
s1 = (s1 << n) | x;
s->s1 = s1;
}
int
baz (struct T *u, unsigned char *v, int w)
{
struct S y;
foo (&y, v, 7);
bar (&y, 12, 0xfff);
bar (&y, 2, u->t);
extfn (&y);
}