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| author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
|---|---|---|
| committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
| commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
| tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/gcc.dg/nrv1.c | |
| parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
| download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip | |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/nrv1.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/nrv1.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/nrv1.c b/gcc-4.9/gcc/testsuite/gcc.dg/nrv1.c new file mode 100644 index 000000000..ca700924a --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/nrv1.c @@ -0,0 +1,28 @@ +/* Test that the NRV optimization doesn't cause a1 to change too soon. This + is equivalent to c++/19317. */ +/* { dg-do run } */ + +void abort (void); + +struct A +{ + int i[100]; +}; + +struct A a1; + +struct A f () +{ + struct A a2; + a2.i[0] = 42; + /* a1.i[0] should still be 0 until we return. */ + if (a1.i[0] != 0) + abort (); + return a2; +} + +int main() +{ + a1 = f(); + return 0; +} |