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[warnings] fix a few warnings introduced with newer version of gcc

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Most of the warnings are new, such as needing to mark fallthroughs on
cases explicitly. A few are based on signed vs unsigned comparisons.

Disable one warning that was annoying about comparing null to arguments
marked nonnull.
This commit is contained in:
Travis Geiselbrecht
2018-03-15 14:10:12 -07:00
parent 1d63a772a9
commit 5dea3e1933
15 changed files with 23 additions and 18 deletions
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2
engine.mk
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@@ -56,7 +56,7 @@ CONFIGHEADER := $(BUILDDIR)/config.h
GLOBAL_INCLUDES := $(BUILDDIR) $(addsuffix /include,$(LKINC))
GLOBAL_OPTFLAGS ?= $(ARCH_OPTFLAGS)
GLOBAL_COMPILEFLAGS := -g -finline -include $(CONFIGHEADER)
GLOBAL_COMPILEFLAGS += -W -Wall -Wno-multichar -Wno-unused-parameter -Wno-unused-function -Wno-unused-label -Werror=return-type
GLOBAL_COMPILEFLAGS += -W -Wall -Wno-multichar -Wno-unused-parameter -Wno-unused-function -Wno-unused-label -Werror=return-type -Wno-nonnull-compare
GLOBAL_COMPILEFLAGS += -fno-common
GLOBAL_CFLAGS := --std=gnu11 -Werror-implicit-function-declaration -Wstrict-prototypes -Wwrite-strings
#GLOBAL_CFLAGS += -Werror