teak-llvm/clang/test/Misc/serialized-diags-driver.c
Ehsan Akhgari d851833c9a [MSVC Compat] Only warn for unknown clang-cl arguments
Summary:
MSVC's driver accepts all unknown arguments but warns about them.  clang
by default rejects all unknown arguments.  This causes issues
specifically with build systems such as autoconf which liberally pass
things such as $LDFLAGS to the compiler and expect everything to work.
This patch teaches clang-cl to ignore unknown driver arguments.

Reviewers: rnk

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D16511

llvm-svn: 258720
2016-01-25 21:14:52 +00:00

21 lines
897 B
C

// Test that the driver correctly combines its own diagnostics with CC1's in the
// serialized diagnostics. To test this, we need to trigger diagnostics from
// both processes, so we compile code that has a warning (with an associated
// note) and then force the driver to crash. We compile stdin so that the crash
// doesn't litter the user's system with preprocessed output.
// RUN: rm -f %t
// RUN: %clang -Wx-typoed-warning -Wall -fsyntax-only --serialize-diagnostics %t.diag %s
// RUN: c-index-test -read-diagnostics %t.diag 2>&1 | FileCheck %s
// CHECK: warning: unknown warning option '-Wx-typoed-warning' [-Wunknown-warning-option] []
// CHECK: warning: variable 'voodoo' is uninitialized when used here [-Wuninitialized]
// CHECK: note: initialize the variable 'voodoo' to silence this warning []
// CHECK: Number of diagnostics: 2
void foo() {
int voodoo;
voodoo = voodoo + 1;
}