meson: Add -Werror=gnu-empty-initializer to MSVC compat args
Only clang has this argument (at least as of clang 8 and gcc 9), which
errors when using the gcc empty initializer syntax in C:
```C
struct foo f = {};
```
GCC has a warning for this, but only when using -Wpedantic, which is a
lot of noise to lose useful warnings in.
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
diff --git a/meson.build b/meson.build
index e8bec9b..92e45d2 100644
--- a/meson.build
+++ b/meson.build
@@ -996,10 +996,10 @@
c_vis_args += '-fvisibility=hidden'
endif
- # Check for C and C++ arguments for MSVC2013 compatibility. These are only
- # used in parts of the mesa code base that need to compile with old versions
- # of MSVC, mainly common code
- foreach a : ['-Werror=pointer-arith', '-Werror=vla']
+ # Check for C and C++ arguments for MSVC compatibility. These are only used
+ # in parts of the mesa code base that need to compile with MSVC, mainly
+ # common code
+ foreach a : ['-Werror=pointer-arith', '-Werror=vla', '-Werror=gnu-empty-initializer']
if cc.has_argument(a)
c_msvc_compat_args += a
endif