Make test case slightly more robust by explicitly passing --sysroot.

Otherwise it would change when DEFAULT_SYSROOT is provided.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@288823 91177308-0d34-0410-b5e6-96231b3b80d8

test/Driver/compilation_database.c

-// RUN: %clang -MD -MP -c -x c %s -xc++ %s -Wall -MJ - 2>&1 | FileCheck %s
+// RUN: %clang -MD -MP --sysroot=somewhere -c -x c %s -xc++ %s -Wall -MJ - 2>&1 | FileCheck %s
 // RUN: not %clang -c -x c %s -MJ %s/non-existant 2>&1 | FileCheck --check-prefix=ERROR %s
 
-// CHECK: { "directory": "[[CWD:[^"]+]]",  "file": "[[SRC:[^"]+[/|\\]compilation_database.c]]", "output": "compilation_database.o", "arguments": ["{{[^"]*}}clang{{[^"]*}}", "-xc", "[[SRC]]", "-c", "-Wall", "--target={{[^"]+}}"]},
-// CHECK: { "directory": "[[CWD:[^"]+]]",  "file": "[[SRC:[^"]+[/|\\]compilation_database.c]]", "output": "compilation_database.o", "arguments": ["{{[^"]*}}clang{{[^"]*}}", "-xc++", "[[SRC]]", "-c", "-Wall", "--target={{[^"]+}}"]},
+// CHECK: { "directory": "[[CWD:[^"]+]]",  "file": "[[SRC:[^"]+[/|\\]compilation_database.c]]", "output": "compilation_database.o", "arguments": ["{{[^"]*}}clang{{[^"]*}}", "-xc", "[[SRC]]", "--sysroot=somewhere", "-c", "-Wall", "--target={{[^"]+}}"]},
+// CHECK: { "directory": "[[CWD:[^"]+]]",  "file": "[[SRC:[^"]+[/|\\]compilation_database.c]]", "output": "compilation_database.o", "arguments": ["{{[^"]*}}clang{{[^"]*}}", "-xc++", "[[SRC]]", "--sysroot=somewhere", "-c", "-Wall", "--target={{[^"]+}}"]},
 // ERROR: error: compilation database '{{.*}}/non-existant' could not be opened:
 
 int main(void) {