| Brad Bishop | 1932369 | 2019-04-05 15:28:33 -0400 | [diff] [blame^] | 1 | From 8c1ebb564f5eca2baeedc27a703200786d1abb0b Mon Sep 17 00:00:00 2001 |
| 2 | From: Khem Raj <raj.khem@gmail.com> |
| 3 | Date: Sat, 22 Dec 2018 15:28:40 -0800 |
| 4 | Subject: [PATCH] tests/amd64: Do not clobber %rsp register |
| 5 | |
| 6 | This is seen with gcc-9.0 compiler now which is fix that gcc community |
| 7 | did recently |
| 8 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52813 |
| 9 | |
| 10 | Upstream-Status: Submitted [https://bugs.kde.org/show_bug.cgi?id=402480] |
| 11 | |
| 12 | Signed-off-by: Khem Raj <raj.khem@gmail.com> |
| 13 | --- |
| 14 | none/tests/amd64-linux/bug345887.c | 5 +++-- |
| 15 | 1 file changed, 3 insertions(+), 2 deletions(-) |
| 16 | |
| 17 | diff --git a/none/tests/amd64-linux/bug345887.c b/none/tests/amd64-linux/bug345887.c |
| 18 | index 0f9237d..4b07fe1 100644 |
| 19 | --- a/none/tests/amd64-linux/bug345887.c |
| 20 | +++ b/none/tests/amd64-linux/bug345887.c |
| 21 | @@ -20,13 +20,14 @@ static void inner(void) |
| 22 | "movq $0x10d, %%r14\n" |
| 23 | "movq $0x10e, %%r15\n" |
| 24 | // not %rbp as mdb is then not able to reconstruct stack trace |
| 25 | - "movq $0x10f, %%rsp\n" |
| 26 | + // not %rsp since gcc ignores it and since gcc >= 9.0 errors about it |
| 27 | + // see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52813 |
| 28 | "movq $0x1234, (%%rax)\n" // should cause SEGV here |
| 29 | "ud2" // should never get here |
| 30 | : // no output registers |
| 31 | : // no input registers |
| 32 | : "memory", "%rax", "%rbx", "%rcx", "%rdx", "%rsi", "%rdi", |
| 33 | - "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15", "%rsp"); |
| 34 | + "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15"); |
| 35 | } |
| 36 | |
| 37 | __attribute__((noinline)) |