Try to make nasm_assert() do a static assert if the argument can be
evaluated at compile time by any particular compiler. We also provide
nasm_try_static_assert() which will assert a compile-time expression
if and only if we can determine we have a constant at compile time
*and* we know that the compiler has a way to handle it.
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Section garbage collect really is quite useful, and it makes managing
library source code management a little bit less stressful. It has
been used by the official builds for a while now, turn it on by
default.
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Make it a selectable option at allocation time if a strlist should
contain only unique strings or not. If not, we omit the hash table and
strlist_find() will not do anything.
Add printf()-style functions to a strlist.
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Shifting negative values is undefined in standard C, but we have tons
of dependencies that signed arithmetic is 2's-complement in the code
anyway, and on gcc-like compilers we pass the -fwrapv option to
indicate exactly that. Therefore, this is not a valid warning in our
case and should be suppressed.
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Add a version of (v)asprintf(), which allocates a string on the
heap. Unlike the standard version of (v)asprintf(), we return the
pointer; if one wants the length of the string then one can simply use
the %n pattern.
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Create our own ctype table where we can do the tests we want to do
cheaply, instead of calling ctype functions and then adding additional
tests all over the code.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
There is no reason to use -O3; it causes code to be insanely
duplicated. Simplify the configure.ac file too.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
strncpy() is correctly used to fill in a zero-*padded* (not
zero-terminated) field in several places. Make gcc not complain about
those uses.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
None of our symbols are available for a dynamic library, and if they
were, there would be no point in allowing them to be overridden. This
optimizes code generation for global symbols.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Simplify the nasm_malloc() code by moving the pointer check into a
common subroutine.
We can now issue a filename error even for failures like malloc().
Add support for the gcc sentinel attribute (verify that a list ends
with NULL).
Add a handful of safe_alloc attributes.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Some older versions of gcc (gcc 4.2.1 at least) produce a warning,
promoted to error, on C99 inlines. Do some work to figure out if we
need to fall back to GNU inline syntax.
Fix some issues with GNU inline syntax.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Get rid of remaining dependencies on FILENAME_MAX, which ought to have
been removed a long time ago.
Remove ofmt->filename(); all implementations pretty much do the same
thing and there is absolutely no reason to duplicate that
functionality all over the place.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Make further autoconf rule improvements and update the required
version of autoconf to 2.69. That version is now 5+ years old and
although there might be older versions which have the prerequisite
macros they are known to have lots of bugs, and we can't really test
them.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Make -O0 imply -fno-omit-frame-pointer
Add options to compile/link with AddressSanitizer and
UndefinedSanitizer.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Move byte order handling functions to their own header file, and try
to be more specific about how exactly to handle things.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
The --enable-sections option isn't too useful without
-Wl,--gc-sections. It's unclear if gcc will provide that option by
default.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
An uncompressed PDF is about twice as big, but if one is using an
external compression program (e.g. .pdf.xz) it compresses far better.
Use it for the RPM specfile.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
We have separate invocations for the various PDF tools anyway. It
generates a slightly annoying error message, but makes some other
things a little easier.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
[f]stat on Windows is messy: we need to use _stati64 for maximum
compatibility, but because there is a bunch of stuff wrapped in
macros, autoconf sometimes gets the wrong answers.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
AC_ARG_ENABLE() doesn't really work the way you expect: one argument
is called on *any* invocation. Create simple helper wrappers to get
the effect we really want for boolean options.
Define WINELOADER=/dev/null to prevent autoconf from inadvertently
running Wine and think we are not cross-compiling even if we are. It
is at the very best slow and buys us absolutely nothing.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
On Windows we need to use _stati64/_fstati64 in order to handle large
file sizes, but the handling was broken in the canned MSVC++
configuration. Clean it up and fix it.
This addresses BR 3392398.
Reported-by: Nikolai Saoukh <nms@otdel-1.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
The -ffunction-sections and -fdata-sections, if supported, can enable
the linker to do some amount of dead code elimination. Basically a
very basic form of LTO.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Default to -O3 instead of -O2. The code gets somewhat bigger, but
nasm is full of tiny functions called from all over the place.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Put in the necessary machinery to compile with gcc link-time
optimization. This means compiling and linking with -flto, as well as
using gcc-ar and gcc-ranlib instead of the normal tools.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Instead of using hacks or compiler-specific features, if we have
standard features as defined in ISO C11, use them.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
