From e97c99f15937e5762a973b25192aab824126a6d3 Mon Sep 17 00:00:00 2001 From: Rong Xu Date: Tue, 2 Sep 2014 15:29:57 -0700 Subject: [gcc-4.9] Merge svn r214745 from google/gcc-4_9 branch. Merge gcc-4_9 source r214745 from google/gcc-4_9 branch. Change-Id: Ie6fa0fd72f4b4eec3adc4db4bb922e652d1c2605 --- gcc-4.9/gcc/testsuite/gcc.target/i386/pr61923.c | 36 +++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 gcc-4.9/gcc/testsuite/gcc.target/i386/pr61923.c (limited to 'gcc-4.9/gcc/testsuite/gcc.target/i386/pr61923.c') diff --git a/gcc-4.9/gcc/testsuite/gcc.target/i386/pr61923.c b/gcc-4.9/gcc/testsuite/gcc.target/i386/pr61923.c new file mode 100644 index 000000000..458158cc6 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.target/i386/pr61923.c @@ -0,0 +1,36 @@ +/* PR debug/61923 */ +/* { dg-do compile } */ +/* { dg-options "-O2 -fcompare-debug" } */ + +typedef struct +{ + struct + { + struct + { + char head; + } tickets; + }; +} arch_spinlock_t; +struct ext4_map_blocks +{ + int m_lblk; + int m_len; + int m_flags; +}; +int ext4_da_map_blocks_ei_0; +void fn1 (int p1, struct ext4_map_blocks *p2) +{ + int ret; + if (p2->m_flags) + { + ext4_da_map_blocks_ei_0++; + arch_spinlock_t *lock; + switch (sizeof *&lock->tickets.head) + case 1: + asm("" : "+m"(*&lock->tickets.head) : ""(0)); + __asm__(""); + ret = 0; + } + fn2 (p2->m_lblk, p2->m_len); +} -- cgit v1.2.3