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Add a way to control the level of checks in the code

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Add a new ASSUME_MASK option, which allows for some control over the
checks used in libfdt. With all assumptions enabled, libfdt assumes that
the input data and parameters are all correct and that internal errors
cannot happen.

By default no assumptions are made and all checks are enabled.

Signed-off-by: Simon Glass <sjg@chromium.org>
Message-Id: <20200220214557.176528-3-sjg@chromium.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Simon Glass 2020-02-20 14:45:51 -07:00 • committed by David Gibson
parent 0c5326cb28
commit 464962489d
2 changed files with 109 additions and 1 deletions
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6
Makefile
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@ -16,7 +16,11 @@ EXTRAVERSION =
LOCAL_VERSION =
CONFIG_LOCALVERSION =
CPPFLAGS = -I libfdt -I .
# Control the assumptions made (e.g. risking security issues) in the code.
# See libfdt_internal.h for details
ASSUME_MASK ?= 0
CPPFLAGS = -I libfdt -I . -DFDT_ASSUME_MASK=$(ASSUME_MASK)
WARNINGS = -Wall -Wpointer-arith -Wcast-qual -Wnested-externs \
-Wstrict-prototypes -Wmissing-prototypes -Wredundant-decls -Wshadow
CFLAGS = -g -Os $(SHAREDLIB_CFLAGS) -Werror $(WARNINGS) $(EXTRA_CFLAGS)