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-rw-r--r--js/src/moz.build4
1 files changed, 3 insertions, 1 deletions
diff --git a/js/src/moz.build b/js/src/moz.build
index 1162cb70c..0a4abd80f 100644
--- a/js/src/moz.build
+++ b/js/src/moz.build
@@ -785,7 +785,9 @@ if CONFIG['JS_HAS_CTYPES']:
DEFINES['FFI_BUILDING'] = True
if CONFIG['GNU_CXX']:
- CXXFLAGS += ['-Wno-shadow', '-Werror=format']
+ # Disable strict-aliasing for GCC, which is enabled by default
+ # starting with version 7.1, see Mozilla bug 1363009.
+ CXXFLAGS += ['-Wno-shadow', '-Werror=format', '-fno-strict-aliasing']
# Suppress warnings in third-party code.
if CONFIG['CLANG_CXX']: