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Do not treat uninitialized variable warnings as errors in the
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auto-generated bison parser code in intl/plural.c.
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This was fixed upstream with a regenerated parser as part of this
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commit:
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commit 568035b7874a099087b77f7bba3e36a1173787b0
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Author: Joseph Myers <joseph@codesourcery.com>
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Date:   Wed Jan 2 19:01:50 2013 +0000
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    Update copyright notices with scripts/update-copyrights.
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diff --git a/intl/Makefile b/intl/Makefile
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index 39ecb680572bd7ab..f0a7d0d9047ce571 100644
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--- a/intl/Makefile
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+++ b/intl/Makefile
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@@ -45,6 +45,9 @@ plural.c: plural.y
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 	$(BISON) $(BISONFLAGS) $@ $^
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 endif
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 $(objpfx)plural.o: plural.c
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+# The generated plural.c file generates unitialized variable warnings
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+# with GCC 4.8 on 32-bit architectures.
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+CFLAGS-plural.c = -Wno-error=maybe-uninitialized
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 include ../Rules
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