MIPS: Silence warnings and unbreak optdebug build for target.

build/toolchain.gypi

Index: build/toolchain.gypi
diff --git a/build/toolchain.gypi b/build/toolchain.gypi
index dfaffd05d26540fbc89208b616eeb6a4d6561cf5..e24bc205b71df0814d542fd37c8a8c23f764a399 100644
--- a/build/toolchain.gypi
+++ b/build/toolchain.gypi
@@ -369,7 +369,12 @@
             'conditions': [
               ['v8_target_arch==target_arch and android_webview_build==0', {
                 # Target built with a Mips CXX compiler.
-                'cflags': ['-EB'],
+                'cflags': [
+                  '-EB',
+                  # Inhibit warning due to known issue present in the newer
+                  # versions of MIPS toolchain.
+                  '-Wno-error=array-bounds',

[paul.l..., 2015/02/13 18:26:17]

I'd prefer to remove the 2 lines of comments, and try something like:
'-Wno-error=array-bounds', # Workaround gcc bug 56273.

(it would be nice to use the full url to the bug:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56273, but I don't think it will
fit on one line. 

Same comment for 2 places below.

[Jakob Kummerow, 2015/02/14 13:01:56]

Either is fine; breaking the 80-col limit for long URLs is acceptable.

[svetozar.janjic, 2015/02/19 16:53:42]

Done.

+                ],
                 'ldflags': ['-EB'],
                 'conditions': [
                   [ 'v8_use_mips_abi_hardfloat=="true"', {
@@ -553,7 +558,12 @@
             'conditions': [
               ['v8_target_arch==target_arch and android_webview_build==0', {
                 # Target built with a Mips CXX compiler.
-                'cflags': ['-EL'],
+                'cflags': [
+                  '-EL',
+                  # Inhibit warning due to known issue present in the newer
+                  # versions of MIPS toolchain.
+                  '-Wno-error=array-bounds',
+                ],
                 'ldflags': ['-EL'],
                 'conditions': [
                   [ 'v8_use_mips_abi_hardfloat=="true"', {
@@ -753,7 +763,12 @@
           ['_toolset=="target"', {
             'conditions': [
               ['v8_target_arch==target_arch and android_webview_build==0', {
-                'cflags': ['-EL'],
+                'cflags': [
+                  '-EL',
+                  # Inhibit warning due to known issue present in the newer
+                  # versions of MIPS toolchain.
+                  '-Wno-error=array-bounds',
+                ],
                 'ldflags': ['-EL'],
                 'conditions': [
                   [ 'v8_use_mips_abi_hardfloat=="true"', {