Do not emit that warning when the source struct (recursively) contains destination struct as the first member. For example, in this case the warning would have been emitted before, and is not anymore:
struct base {
int a;
};
struct derived {
struct base base;
int b;
};
struct derived derived;
struct base *base = &derived;
I personally use that pattern in my code (in a bit more elaborate form) and so this change removes the warnings for those use cases, while still retaining it for everything else. Feel free to CC me on the mailing list if you have questions, suggestions or complaints.
When tcc -run is used with input file from stdin, then run_main's
stdin (which is tcc's stdin) is already EOF after we've read it.
If the program operates exclusively on stdin, then it cannot be used.
This commit adds an option -rstdin FILE which sets run_main's stdin.
Can also be used in such case to set run_main's stdin to the tty,
using -rstdin /dev/tty (posix) or -rstdin con (windows).
The tcc options behavior is non trivial, and it's also susceptible
to ambiguities - which do exist (but currently are not painful).
- Add a script 'optclash' which detects clashes/ambiguities.
- Document the parsing behaviour and current clashes/resolutions
as comments in libtcc.c .
tcc.h, tccgen.c:
Add and use IS_BT_ARRAY
tccpp.c:
free memory when size is 0 in realloc code
tccdbg.c:
move common code to seperate function remove_type_info
- include/stddef.h, tcctest.c
Revert "tests/tcctest.c: include stdint.h"
This reverts commit 8f23997ca7
We don't want tcctest.c to rely on system include files
- libtcc.c:
Revert "libtcc.c: Remove unused defines free and realloc"
To be unused is the point why they do exist
This reverts commit 2f88764100.
- tcc.c:
fix formatting of commit e73529865d
- tccpp.c:
parse_include(): print skipped include files too (with tcc -vv[v] file)
next_nomacro(): faster L"str" parsing
- tccgen.c: fix c2y if declaration:
* accept like GCC: if (int a = 0, b, c = x; c)
* accept as "TCC extension": if (int a = 0, b, c = x)
* "speak tcc" with symbol/function names
- README:
cleanup
There are install shell scripts around, often derived from X11 like
contained in glibc or Gash sources, which require to separate -m from
its value. Therefore add a space behind 'install -m' in the Makefile.
GAS selects default attributes for a section based on its name and makes
the sections .text, .init, .fini executable. The crti.s and crtn.s files
of musl rely on these defaults and don't set the "x" flag for the .init
and .fini sections. Unfortunately TCC does not care for .init and .fini
section defaults in assembler or C code. Fix this for assembler code.
Handle 'register long r10 __asm__("%r10")' without %, too. Using GCC
the % is optional. The musl source code does not use the % prefix.
The GCC source code uses both variants.
despite being defined in tcc's own stddef.h, intended to be included by
libtcc.h, libtcc.h actually included the libc's standard include
tested on musl
* case 1: local scope of 'ff'
int main() {
int ff = 123;
{
int ff(int):
ff(456)
}}
* case 2: linkage of a static extern symbol
(older gcc did allow that)
static int ff(int);
int main() {
int ff(int):
ff(456)
}
Also:
- cleanup enum, let sym_push() handle redefinition
- just mark incomplete array base types, unshare only
when needed (in decl_initializer_alloc())
- fix sizeof empty array (= 0) : int ii[] = {};
- rename 'Sym' members used by __attribute__((cleanup(f)))
wanted by gdb to have global variables info on windows
Also:
tcc.h:
- move dwarf inline fns
- use dwarf as default for 64-bit platforms. GDB can't handle
locals info from stabs on 64-bit correctly (also not from gcc).
tccpe.c:
- use 's1' instead of 'pe->s1'
tccdbg.c:
- fix locals info problem on Windows where (unsigned long) s->value
is uint32_t and would not cast to long long correctly.
- tweak dwarf to have line info at begin of functions, otherwise
"gdb b main, r, n" would say "no line number info, single step..."
(see also objdump --dwarf=decodedline ...)
Fix 'void func2(char *(*md)(char *md))' declaration.
Fix global array and local extern array problems.
Fix scope problem with old function declaration.
Fix 'typedef int t[]' declaration. Empty size should remain.
... see tests
Also:
- tccgen.c: cleanup _Generic a little
- libtcc.c: cleanup mem-debug a little
- arm-link.c: read/write only once
- tcc.h: another fix for clang offsetof
- tccdbg.c:
* stabs: handle forward struct/enum decls
* stabs: fix anonymous struct members (must not have a .L123 name)
* avoid strncpy()
Currently debug size is big because some types are output multiple times.
Function scope was not treated correctly.
Rename anon(ymous) into forw(ard).
Compact string table by reusing names.
int foo(struct xxx {int x[3];} *p) { ...
We want 'xxx' be visible only inside the function. To get that,
the patch removes the 'sym_push(param)' in xxx-gen.c, and instead
(in tccgen.c:gen_function()) pushes all symbols that were newly
defined during parsing of the parameter list in post_type().
Also,
- decl_initializer_alloc():
patch existing globals earlier, which updates flex arrays too
- let patch_type() do the 'redefinition' check and FUNC_OLD update
tcc.c:
- be nice to leak checkers
tcctools.c:
- remove unused TCCState params
tccrun.c:
- call bound_exit() after signals to let it free mem
tccelf.c:
- use section_add() instead of section_ptr_add() when
more appropriate
tccpp.c:
- use size_t to align tal_header naturally
- 'POINTER_SIZE' and 'PTR_SIZE' in the same source is confusing
- "char file_name[TAL_DEBUG_FILE_LEN + 1];" looks silly.
- next_nomacro(): skip UTF8 BOM at BOF
tccgen.c:
- get rid of STMT_EXPR clause on top of block
- warn with useless type like 'int;'
- move skip()'s in block() for better error line-info
- BIT_SIZE bits are meaningful only with VT_BITFIELD
(not with enums for example)
workflow/test-win32:
- build with MSVC using build-tcc.bat also
alloca.S:
- fix 'off by one' problem on win32 (must touch current page
too because the 'push %edx' at the end could touch the next page)
- must not align greater than 4 when used for struct args
(i386-gen.c:gfunc_call())
libtcc.c:
- accept -g1dwarf (dwarf output, only line info)
The code:
void mul(double *p)
{
*p *= 2.0;
}
failed on x86_64 because register was not loaded after
bound checking call.
Also printed size when pointer indir failes.
