Mesa (master): gallium: silence __builtin_frame_address nonzero argument is unsafe warning

[Timothy Arceri]

Module: Mesa
Branch: master
Commit: 370e356ebab4885fc19b2b1d1de2816b6cd4dfc8
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=370e356ebab4885fc19b2b1d1de2816b6cd4dfc8

Author: Timothy Arceri <tarceri at itsqueeze.com>
Date:   Fri Mar  9 11:00:55 2018 +1100

gallium: silence __builtin_frame_address nonzero argument is unsafe warning

Calling __builtin_frame_address with a nonzero argument is unsafe
but is sometimes done for debugging purposes. Since this code is
part of some debug util code I'm assuming that is the case here
and using GCC pragma to silence the warning.

Reviewed-by: Jose Fonseca <jfonseca at vmware.com>

---

 src/gallium/auxiliary/util/u_debug_stack.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/gallium/auxiliary/util/u_debug_stack.c b/src/gallium/auxiliary/util/u_debug_stack.c
index 6ddacdb362..974e639e89 100644
--- a/src/gallium/auxiliary/util/u_debug_stack.c
+++ b/src/gallium/auxiliary/util/u_debug_stack.c
@@ -265,7 +265,10 @@ debug_backtrace_capture(struct debug_stack_frame *backtrace,
 #endif
 
 #if defined(PIPE_CC_GCC)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wframe-address"
    frame_pointer = ((const void **)__builtin_frame_address(1));
+#pragma GCC diagnostic pop
 #elif defined(PIPE_CC_MSVC) && defined(PIPE_ARCH_X86)
    __asm {
       mov frame_pointer, ebp