www-client/chromium: disable EBP usage in ffmpeg on x86

Closes: https://bugs.gentoo.org/656902
Package-Manager: Portage-2.3.40_p15, Repoman-2.3.9_p247

2 files changed, 36 insertions, 0 deletions

diff --git a/www-client/chromium/files/chromium-ffmpeg-ebp-r0.patch b/www-client/chromium/files/chromium-ffmpeg-ebp-r0.patch
new file mode 100644
index 000000000000..e7161c6d1102
--- /dev/null
+++ b/www-client/chromium/files/chromium-ffmpeg-ebp-r0.patch
@@ -0,0 +1,18 @@
+https://bugs.chromium.org/p/chromium/issues/detail?id=796379
+https://bugs.gentoo.org/656902
+
+--- a/third_party/ffmpeg/BUILD.gn
+--- b/third_party/ffmpeg/BUILD.gn
+@@ -247,11 +247,7 @@
+     # On POSIX x86, sanitizers will fail to compiler the H264 CABAC code due to
+     # insufficient registers unless we disable EBP usage. crbug.com/786760
+     if (target_cpu == "x86") {
+-      if (using_sanitizer) {
+-        defines += [ "HAVE_EBP_AVAILABLE=0" ]
+-      } else {
+-        defines += [ "HAVE_EBP_AVAILABLE=1" ]
+-      }
++      defines += [ "HAVE_EBP_AVAILABLE=0" ]
+     }
+ 
+     if (!is_clang) {
diff --git a/www-client/chromium/files/chromium-ffmpeg-ebp-r1.patch b/www-client/chromium/files/chromium-ffmpeg-ebp-r1.patch
new file mode 100644
index 000000000000..5e0f151514f7
--- /dev/null
+++ b/www-client/chromium/files/chromium-ffmpeg-ebp-r1.patch
@@ -0,0 +1,18 @@
+https://bugs.chromium.org/p/chromium/issues/detail?id=796379
+https://bugs.gentoo.org/656902
+
+--- a/third_party/ffmpeg/BUILD.gn
+--- b/third_party/ffmpeg/BUILD.gn
+@@ -239,11 +239,7 @@
+   # Windows builds can't compile without EBP because we can't omit frame
+   # pointers like we do on posix.
+   if (target_cpu == "x86") {
+-    if (using_sanitizer || is_win) {
+-      defines += [ "HAVE_EBP_AVAILABLE=0" ]
+-    } else {
+-      defines += [ "HAVE_EBP_AVAILABLE=1" ]
+-    }
++    defines += [ "HAVE_EBP_AVAILABLE=0" ]
+   }
+ 
+   if (is_posix || is_fuchsia) {