Revert of Silence -Wclobbered in each file that needs it. (patchset #2 id:20001 of...

Reason for revert:
Jpeg strategy seems to be leading to crashes.  Gonna go back to warning squelch.

Original issue's description:
> Silence -Wclobbered in each file that needs it.
>
> BUG=skia:
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2184823009
>
> Committed: https://skia.googlesource.com/skia/+/03f704a343d7a82974f977eda8789a8c721c93e5

TBR=msarett@google.com,mtklein@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review-Url: https://codereview.chromium.org/2188313003

diff --git a/gyp/codec.gyp b/gyp/codec.gyp
index 4b4029b..e2269f2 100644 (file)
--- a/gyp/codec.gyp
+++ b/gyp/codec.gyp
@@ -22,6 +22,11 @@
         'libpng.gyp:libpng',
         'libwebp.gyp:libwebp',
       ],
+      'cflags':[   
+        # FIXME: This gets around a warning: "Argument might be clobbered by longjmp". 
+        '-Wno-clobbered',
+        '-Wno-unknown-warning-option',
+      ],
       'include_dirs': [
         '../include/codec',
         '../include/private',

diff --git a/src/codec/SkJpegCodec.cpp b/src/codec/SkJpegCodec.cpp
index 6a1636c..f4116e3 100644 (file)
--- a/src/codec/SkJpegCodec.cpp
+++ b/src/codec/SkJpegCodec.cpp
@@ -19,12 +19,6 @@
 #include <stdio.h>
 #include "SkJpegUtility.h"
 
-// Same as setjmp, but introduces a new empty scope.
-// This way we can avoid GCC's overactive warnings about clobbered locals.
-static int setjmp_no_locals(jmp_buf env) {
-    return setjmp(env);
-}
-
 extern "C" {
     #include "jerror.h"
     #include "jpeglib.h"
@@ -196,7 +190,7 @@ bool SkJpegCodec::ReadHeader(SkStream* stream, SkCodec** codecOut,
     SkAutoTDelete<JpegDecoderMgr> decoderMgr(new JpegDecoderMgr(stream));
 
     // libjpeg errors will be caught and reported here
-    if (setjmp_no_locals(decoderMgr->getJmpBuf())) {
+    if (setjmp(decoderMgr->getJmpBuf())) {
         return decoderMgr->returnFalse("setjmp");
     }
 
@@ -420,7 +414,7 @@ bool SkJpegCodec::setOutputColorSpace(const SkImageInfo& dst) {
  * dimensions if possible
  */
 bool SkJpegCodec::onDimensionsSupported(const SkISize& size) {
-    if (setjmp_no_locals(fDecoderMgr->getJmpBuf())) {
+    if (setjmp(fDecoderMgr->getJmpBuf())) {
         return fDecoderMgr->returnFalse("onDimensionsSupported/setjmp");
     }
 
@@ -472,7 +466,7 @@ SkCodec::Result SkJpegCodec::onGetPixels(const SkImageInfo& dstInfo,
     jpeg_decompress_struct* dinfo = fDecoderMgr->dinfo();
 
     // Set the jump location for libjpeg errors
-    if (setjmp_no_locals(fDecoderMgr->getJmpBuf())) {
+    if (setjmp(fDecoderMgr->getJmpBuf())) {
         return fDecoderMgr->returnFailure("setjmp", kInvalidInput);
     }
 
@@ -581,7 +575,7 @@ SkSampler* SkJpegCodec::getSampler(bool createIfNecessary) {
 SkCodec::Result SkJpegCodec::onStartScanlineDecode(const SkImageInfo& dstInfo,
         const Options& options, SkPMColor ctable[], int* ctableCount) {
     // Set the jump location for libjpeg errors
-    if (setjmp_no_locals(fDecoderMgr->getJmpBuf())) {
+    if (setjmp(fDecoderMgr->getJmpBuf())) {
         SkCodecPrintf("setjmp: Error from libjpeg\n");
         return kInvalidInput;
     }
@@ -657,7 +651,7 @@ SkCodec::Result SkJpegCodec::onStartScanlineDecode(const SkImageInfo& dstInfo,
 
 int SkJpegCodec::onGetScanlines(void* dst, int count, size_t dstRowBytes) {
     // Set the jump location for libjpeg errors
-    if (setjmp_no_locals(fDecoderMgr->getJmpBuf())) {
+    if (setjmp(fDecoderMgr->getJmpBuf())) {
         return fDecoderMgr->returnFailure("setjmp", kInvalidInput);
     }
     // Read rows one at a time
@@ -694,7 +688,7 @@ int SkJpegCodec::onGetScanlines(void* dst, int count, size_t dstRowBytes) {
 
 bool SkJpegCodec::onSkipScanlines(int count) {
     // Set the jump location for libjpeg errors
-    if (setjmp_no_locals(fDecoderMgr->getJmpBuf())) {
+    if (setjmp(fDecoderMgr->getJmpBuf())) {
         return fDecoderMgr->returnFalse("setjmp");
     }
 
@@ -809,7 +803,7 @@ SkCodec::Result SkJpegCodec::onGetYUV8Planes(const SkYUVSizeInfo& sizeInfo, void
     }
 
     // Set the jump location for libjpeg errors
-    if (setjmp_no_locals(fDecoderMgr->getJmpBuf())) {
+    if (setjmp(fDecoderMgr->getJmpBuf())) {
         return fDecoderMgr->returnFailure("setjmp", kInvalidInput);
     }
 

diff --git a/src/codec/SkPngCodec.cpp b/src/codec/SkPngCodec.cpp
index b8916f9..ee72af5 100644 (file)
--- a/src/codec/SkPngCodec.cpp
+++ b/src/codec/SkPngCodec.cpp
@@ -20,11 +20,6 @@
 #include "SkTemplates.h"
 #include "SkUtils.h"
 
-// This warning triggers false postives way too often in here.
-#if defined(__GNUC__) && !defined(__clang__)
-    #pragma GCC diagnostic ignored "-Wclobbered"
-#endif
-
 ///////////////////////////////////////////////////////////////////////////////
 // Callback functions
 ///////////////////////////////////////////////////////////////////////////////