Fix debuginfo-tests with GDB on Linux

Summary:
Split asan.c into asan.c and asan-blocks.c, which will be
darwin-specific. I suspect we could make it pass on Linux by adding
cmake to build BlocksRuntime from compiler-rt, but I'm not shaving that
yak yet.

asan.c and safestack.c: GDB and LLDB appear to print aggregates
differently today. Print individual elements instead of the entire
aggregate.

dbg-arg.c: GDB doesn't appear to print leading zeros when printing
pointers.

stack-var.c: Add the optnone attribute so that LLVM won't optimize away
this no-op function call. This should be a cross-platform failure
observable on Mac, so this is surprising.

Reviewers: aprantl, dblaikie

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D37344

llvm-svn: 312265

1 files changed, 3 insertions, 3 deletions

diff --git a/debuginfo-tests/stack-var.c b/debuginfo-tests/stack-var.c
index 8569546e184..372139c59b0 100644
--- a/debuginfo-tests/stack-var.c
+++ b/debuginfo-tests/stack-var.c
@@ -1,18 +1,18 @@
 // RUN: %clang %target_itanium_abi_host_triple %s -O -o %t.out -g
 // RUN: %test_debuginfo %s %t.out
 
-void __attribute__((noinline)) bar(int *test) {}
+void __attribute__((noinline, optnone)) bar(int *test) {}
 int main() {
   int test;
   test = 23;
   // DEBUGGER: break 12
   // DEBUGGER: r
   // DEBUGGER: p test
-  // CHECK: 23
+  // CHECK: = 23
   bar(&test);
   // DEBUGGER: break 17
   // DEBUGGER: c
   // DEBUGGER: p test
-  // CHECK: 23
+  // CHECK: = 23
   return test;
 }