Commit Graph

146 Commits

Author SHA1 Message Date
matthias gatto
e371642e6b _Static_assert test 2019-04-28 08:27:33 +02:00
Michael Matz
85483f321d Add 103_implicit_memmove testcase
which checks that a declaration after TCC implicitely declares
an internally used function (memmove here) doesn't create any problem.
2019-04-18 03:42:23 +02:00
Michael Matz
105107124d Make 102_alignas independend of architecture
alignment of double is of course depending on the target,
so the .expect file was arch dependend.  Fix this by simply doing
some comparison tests.
2019-04-11 00:37:07 +02:00
Michael Matz
0344c0b6a0 Fix more struct inits
anonymous struct members were somewhat broken as the testcase
demonstrates.  The reason is the jumping through hoops to fiddle
with the offsets I once introduced to avoid having to track
a cumulative offset.  That's now not necessary anymore and actively
harmful, doing the obvious thing is now better.
2019-04-11 00:30:41 +02:00
Michael Matz
94846d3eef Some types testcases
during some rework I tripped over some more obscure but valid declarators.
Let's not loose them.
2019-04-09 04:39:38 +02:00
Michael Matz
ce4aea2478 Fix last commit's expected output
I forgot to regenerate the expected output of 102_alignas.c
just before committing and pushing :-/  This rectifies that.
2019-04-09 03:58:17 +02:00
Michael Matz
38a6aba468 Fix _Alignas
* don't accept _Alignas as type qualifier (after pointer '*').
* accept type-names within _Alignas
* add testcases
2019-04-08 22:06:51 +02:00
Michael Matz
2a417b50ee Detect invalid VLA decls
see testcase, when the inner array dimension of multi-dimensional
VLAs isn't given TCC was generating invalid vstack accesses.
Those are actually invalid, so just diagnose them.
2019-04-07 04:09:25 +02:00
Michael Matz
5ac2a26666 Don't endlessly recurse on invalid nested typedefs
see testcase.
2019-04-07 03:15:05 +02:00
Michael Matz
1fd3709379 Fix local extern vardecl
see testcases.  A local 'extern int i' declaration needs to
refer to the global declaration, not to a local one it might
be shadowing.  Doesn't seem to happen in the wild very often as
this was broken forever.
2019-03-18 05:53:03 +01:00
Michael Matz
e6980f6cc7 Detect more invalid initializers
in presence of invalid source code we can't rely on the
next token to determine if we have or haven't already parsed
an initializer element, we really have to track it in some separate
state; it's a flag, so merge it with the other two we have (size_only
and first).  Also add some syntax checks for situations which
formerly lead to vstack leaks, see the added testcases.
2019-03-18 03:31:11 +01:00
Michael Matz
4b46e0ec63 Handle corner case for abstract decls
sometimes abstract decls in parameter lists left the returned name
uninitialized potentially leading to segfaults, like in

  int f(int ()) {
    return 0;
  }

Deal with this.
2019-03-12 17:27:15 +01:00
Michael Matz
ef0397cf3d Fix crash on invalid code
like on 'enum myenum { L = -1 } L;'.  It's a bit tedious as
there are two paths (for global vs local symbols), and because
the scope and enum_val share same storage.
2019-03-08 17:58:25 +01:00
Michael Matz
08e22d8ad2 More cleanup tests
test3 wasn't working originally.
2019-01-28 05:54:19 +01:00
matthias
de92fbee7e add a cleanup test that use a lot of scope 2019-01-23 17:21:14 +01:00
matthias
ff38d90d5d Add attribute cleanup test 2019-01-23 17:21:14 +01:00
Matthias Gatto
2b94c0c3b1 Revert "allow c11 feature only when -std=c11 is use"
This reverts commit 756988e8f9.
2019-01-11 10:35:44 +01:00
matthias gatto
756988e8f9 allow c11 feature only when -std=c11 is use 2019-01-10 23:42:45 +01:00
Michael Matz
3e007193a2 Fix more attribute placements
when parsing the type in this cast:
  (int (__attribute__(X) *)(int))foo
we ignored the attribute, which matters if it's e.g. a 'stdcall'
attribute on the function pointer.  Only this particular placement
was misparsed.  Putting the attribute after the '*' or outside the inner
parens worked.  This idiom seems to be used on SQLite, perhaps this
fixes a compilation problem on win32 with that.
2018-12-31 22:00:31 +01:00
Christian Jullien
325241c0de zfunc works again on ARM after Pursuer fix 2018-12-22 19:14:22 +01:00
Christian Jullien
adfcf3b1dd Temporary remove zfunc test on ARM which generates a relocation error. Waiting for a fix 2018-12-20 08:44:47 +01:00
Michael Matz
c4787e3626 Fix type completion for array types as well
like qualifier merging the array sizes are merged as well
for the operands of ?:, and they must not statically influence
the types of decls.

Also fix some style problems, spaces aren't stinky :)
2018-11-30 23:43:30 +01:00
Petr Skocik
f7779efe58 Fix incorrect one-sided void handling in ?:
Also make the case when one side in ?: is a ptr
and the other is neither a ptr nor a null-ptr constant
fail cleanly instead of segfaulting.
2018-11-29 13:40:48 +01:00
Petr Skocik
49dfb5755a Make fn designators in ?: decay to ptrs
This
    _Generic((__typeof(1?f:f)*){0}, void (**)(void): (void)0);
should compile like it does in gcc and clang.
2018-11-29 12:43:01 +01:00
Petr Skocik
3058d4116e Fix (Cexpr?struct1:struct2).member
Tcc used to fail this with `lvalue expected`
if the expression was a compile-time constant.
2018-11-29 10:26:56 +01:00
Petr Skocik
9d44b02a49 Fix the fix on type combining (e0012c2)
char **argv;
	    _Generic(argv, char**: (void)0);
	    _Generic(0?(char const*)0:argv[0], char const*: (void)0);
	    _Generic(argv, char**: (void)0);

    would fail because the type of argv would get modified by the
    ternary. Now allocate a separate type on the value stack to
    prevent this error.
2018-11-29 10:26:35 +01:00
Petr Skocik
e0012c2767 Fix ptr type combining inside the ternary operator
Make it match http://port70.net/~nsz/c/c99/n1256.html#6.5.15p6
(or http://port70.net/~nsz/c/c11/n1570.html#6.5.15p6).
2018-11-28 10:36:58 +01:00
Petr Skocik
c81116e29a Make casts lose top-level qualifiers
TODO: also make them lose lvalue status
2018-11-20 19:24:24 +01:00
Petr Skocik
f85b1e393f Always allow ({ }) in the ctrl-expr of _Generic
tcc would reject e.g.,
    void f(){ struct {_Bool x:_Generic(({0;}),default:1);} my_x; }
with `expected constant`. This patch makes it accept it.

(The patch also makes tcc's _Generic a little more "generic" than that
 of gcc and clang in that that tcc now also accepts
`struct {_Bool x:_Generic(({0;}),default:1);} my_x;` in file scope
while gcc and clang don't, but I think there's no harm in that
and gcc and clang might as well accept it in filescope too, given
that they have no problem with
e.g., `/*filescope:*/int x=1, y=2, z=_Generic(x+y, int:3);`)
2018-11-13 12:51:16 +01:00
Petr Skocik
314843ffc3 Fix how _Generic treats pointers to arrays.
_Generic should distinguish pointers to differently sized
arrays such as `int(*)[2]` and `int(*)[4]`.
2018-11-12 20:52:14 +01:00
Petr Skocik
73ca09ff32 Fix array pointer stringification.
`int (*)[4];` should not be stringified as `int *[4];`
Add stringification tests.
2018-11-12 20:50:51 +01:00
Michael Matz
22420ee1ee Fix misparsed type in presence of attributes
The type within the cast (int (__attribute__((foo)) *)(void))
was misparsed because of the presence of the attribute (parse_btype
prematurely concluded that (__attribute__() *) is a type.

Also see testcase.  This construct is used in sqlite it seems.
2018-07-28 18:55:54 +02:00
Michael Matz
d79caa9ff6 x86-64: Fix calls via absolute function pointers
linkers don't treat relocations using symindex 0 (undefined)
very well, it can't be misused as indicator for an absolute number.
Just don't bother with special casing this, rather emit an indirect
call/jump right away. ARM64 needs the same (and didn't handle
calls via constant absolute func pointers before).

The testcase as is doesn't fail without the patch, it actually
needs separate compilation (to -fPIC .o file, then to shared lib)
to fail.
2018-07-02 01:57:29 +02:00
grischka
8f6fcb709a misc fixes
misc fixes including:
- tcc.c: fix "tcc -vv" for libtcc1.a on win32/PE
- tccelf.c: fix a crash when GOT has no relocs (witn -nostdlib)
- tccelf.c: fix stab linkage for zero n_strx
- tccgen.c: fix stdcall decoration for array parameters
    int __stdcall func(char buf[10]) is _func@4 (was _func@12)
- tccgen.c: fix static variables with nocode/nodata_wanted
    see tests2/96_nodata_wanted.c
- tccrun.c: align sections using sh_addralign (for reliable function_alignment)
- tests2/Makefile sort 100 after 99
- win32/include/sys/stat.h fix _stat and _wstat
- x86_64-gen.c: win64/gfunc_call: fix a bug with xmmN register args
    previously overwrote valid other xmmN registers eventually
2018-06-01 12:52:01 +02:00
grischka
2b155a8c16 tccgen.c: fix warning for incompatible struct- and function pointers
see tests2/60_errors_and_warnings.c
2018-06-01 12:41:21 +02:00
Petr Skocik
ef668aae1e Don't fail on const/restrict/static/* inside []
This patch makes tcc ignore them.

Normally (as per the C standard), They should
be only applicable inside parameter arrays
and affect (const/restrict) the pointer the
array gets converted to.

[matz: fix formatting, add volatile handling, add testcase,
add comment about above deficiency]
2018-04-01 00:48:09 +02:00
Petr Skocik
d6d3cf00ec patch type_to_str to handle complex function-ptr decls better
Code like:

    #include <signal.h>
    int main() { _Generic(signal, int: 0); }

should fail with
    error: type 'extern void (*(int, void (*)(int)))(int)' does not match any association
not
    error: type 'extern void *(int)(int, void *(int))' does not match any association

[matz: fix formatting, fix function-to-pointer decay for operands of
_Generic, add testcase for this]
2018-04-01 00:38:11 +02:00
Michael Matz
7ad2cf8d68 Code suppression fixes
See adjusted testcase, a lone break; in a do while loop was
incorrectly disabling the exit test.
2018-01-05 02:19:26 +01:00
grischka
da8c62f75d various stuff
win32/Makefile ("for cygwin") removed
- On cygwin, the normal ./configure && make can be used with either
  cygwin's "GCC for Win32 Toolchain"
      ./configure --cross-prefix=i686-w64-mingw32-
  or with an existing tcc:
      ./configure --cc=<old-tccdir>/tcc.exe

tcctest.c:
- exclude test_high_clobbers() on _WIN64 (does not work)

tests2/95_bitfield.c:
- use 'signed char' for ARM (where default 'char' is unsigned)

tests:
- remove -I "expr" diff option to allow tests with
  busybox-diff.

libtcc.c, tcc.c:
- removed -iwithprefix option.  It is supposed to be
  combined with -iprefix which we don't have either.

tccgen.c:
- fix assignments and return of 'void', as in
     void f() {
         void *p, *q;
         *p = *q:
         return *p;
     }
  This appears to be allowed but should do nothing.

tcc.h, libtcc.c, tccpp.c:
- Revert "Introduce VIP sysinclude paths which are always searched first"
  This reverts commit 1d5e386b0a.

  The patch was giving tcc's system includes priority over -I which
  is not how it should be.

tccelf.c:
- add DT_TEXTREL tag only if text relocations are actually
  used (which is likely not the case on x86_64)
- prepare_dynamic_rel(): avoid relocation of unresolved
  (weak) symbols

tccrun.c:
- for HAVE_SELINUX, use two mappings to the same (real) file.
  (it was so once except the RX mapping wasn't used at all).

tccpe.c:
- fix relocation constant used for x86_64 (by Andrei E. Warentin)
- #ifndef _WIN32 do "chmod 755 ..." to get runnable exes on cygwin.

tccasm.c:
- keep forward asm labels static, otherwise they will endup
  in dynsym eventually.

configure, Makefile:
- mingw32: respect ./configure options --bindir --docdir --libdir
- allow overriding tcc when building libtcc1.a and libtcc.def with
      make XTCC=<tcc program to use>
- use $(wildcard ...) for install to allow installing just
  a cross compiler for example
      make cross-arm
      make install
- use name <target>-libtcc1.a

build-tcc.bat:
- add  options: -clean, -b bindir
2017-10-11 18:13:43 +02:00
Larry Doolittle
1b6806e5bb Spelling fixes
Comments only, no change to functionality
2017-09-24 18:03:26 -07:00
Larry Doolittle
44d4da62bb Convert two .c files to LF line endings
... matching the other 157 .c files in the tree
2017-09-24 16:48:08 -07:00
Zhang Boyang
078d8c2c5a Add test case for fastcall calling convention 2017-09-10 18:22:48 +08:00
Zhang Boyang
f406f63a38 Add test case for AL/AX extending problem 2017-09-10 17:03:34 +08:00
Zhang Boyang
978d1ecce0 Add test case for wide char handling in wide string literal 2017-09-10 16:50:19 +08:00
Matthias Gatto
23064b1734 check that _Generic match 'signed long int' as 'long' 2017-07-25 18:56:41 +02:00
grischka
4b3c6e74ab tccgen: nodata_wanted fix, default ONE_SOURCE, etc...
tccgen.c:
  doubles need to be aligned, on ARM.  The section_reserve()
  in init_putv does not do that.
-D ONE_SOURCE: is now the default and not longer needed. Also,
  tcc.h now sets the default native target.  These both make
  compiling tcc simple as "gcc tcc.c -o tcc -ldl" again.
arm-asm.c:
  enable pseudo asm also for inline asm
tests/tests2/Makefile:
  disable bitfield tests except on windows and x86_64
  and don't generate-always
tcc.c:
  fix a loop with -dt on errors
configure:
  print compiler version (as recognized)
tccpp.c:
  actually define symbols for tcc -dt
  clear static variables (needed for -dt or libtcc usage)
96_nodata_wanted.c:
  use __label__ instead of asm
lib/files:
  use native symbols (__i386__ etc.) instead of TCC_TARGET_...
2017-07-23 21:24:11 +02:00
matthias
fdc18d307a mutiples fix for _Generic
* check that _Generic don't match unsigned char * with char *
  this case is usefull as with -funsigned-char, 'char *' are unsigned

* change VT_LONG so it's now a qualifier

  VT_LONG are never use for code generation, but only durring parsing state,
  in _Generic we need to be able to make diference between
  'long' and 'long long'
  So VT_LONG is now use as a type qualifier, it's old behaviour is still
  here, but we can keep trace of what was a long and what wasn't

* add TOK_CLONG and TOK_CULONG

  tcc was directly converting value like '7171L' into TOK_CLLONG or
  TOK_CINT depending of the machine architecture.

  because of that, we was unable to make diference between a long and a
  long long, which doesn't work with _Generic.

  So now 7171L is a TOK_CLONG, and we can handle _Generic properly

* check that _Generic can make diference between long and long long

* uncomment "type match twice" as it should now pass tests on any platforms

* add inside_generic global

  the point of this variable is to use VT_LONG in comparaison only
  when we are evaluating a _Generic.
  problem is with my lastest patchs tcc can now make the diference between
  a 'long long' and a 'long', but in 64 bit stddef.h typedef uint64_t as
  typedef signed long long int int64_t and stdint.h as unsigned long int, so tcc
  break when stdint.h and stddef.h are include together.

  Another solution woud be to modifie include/stddef.h so it define uint64_t as
  unsigned long int when processor is 64 bit, but this could break some
  legacy code, so for now, VT_LONG are use only inside generc.

* check that _Generic parse first argument correctly

* check that _Generic evaluate correctly exresion like "f() / 2"
2017-07-21 19:30:31 +02:00
grischka
0cc24d0e84 tcc -dt -run ... : simpler is better
* -dt now with lowercase t

* test snippets now separated by real preprocessor statements
  which is valid C also for other compilers

    #if defined test_xxx
       < test snippet x >
    #elif defined test_yyy
       < test snippet y >
    #elif ...
    #endif

* simpler implementation, behaves like -run if no 'test_...' macros
  are seen, works with -E too

* for demonstration I combined some of the small tests for errors
  and warnings (56..63,74) in "60_errors_and_warnings.c"

Also:
* libtcc.c:
  put tcc_preprocess() and tcc_assemble() under the setjmp clause
  to let them return to caller after errors.  This is for -dt -E.
* tccgen.c:
  - get rid of save/restore_parse_state(), macro_ptr is saved
    by begin_macro anyway, now line_num too.
  - use expr_eq for parsing _Generic's controlling_type
  - set nocode_wanted with const_wanted. too, This is to keep
    VT_JMP on vtop when parsing preprocessor expressions.
* tccpp.c: tcc -E: suppress trailing whitespace from lines with
  comments (that -E removes) such as
       NO_GOTPLT_ENTRY,\t    /* never generate ... */
2017-07-20 22:21:27 +02:00
grischka
7f1ab9b1e1 tccgen: nodata_wanted
The existing variable 'nocode_wanted' is now used to control
output of static data too. So...

(nocode_wanted == 0)
    code and data (normal within functions)
(nocode_wanted < 0)
    means: no code, but data (global or static data)
(nocode_wanted > 0)
    means: no code and no data (code and data suppressed)
(nocode_wanted & 0xC0000000)
    means:  we're in declaration of static data

Also: new option '-dT' to be used with -run
    tcc -dT -run file.c
This will look in file.c for certain comment-boundaries:
    /*-* test-xxx: ...some description */
and then for each test below run it from memory.  This way
various features and error messages can be tested with one
single file.  See 96_nodata_wanted.c for an example.

Also: tccgen.c: one more bitfield fix
2017-07-16 12:10:00 +02:00
grischka
69a137ff88 #pragma comment(option,"-..."), bitfields test, etc...
tccpp.c:
* #pragma comment(option,"-some-option")
  to set commandline option from C code.  May work only
  for some options.
libtcc.c:
* option "-d1..9": sets a 'g_debug' global variable.
  (for development)
tests2/Makefile:
* new make targets: tests2.37 / tests2.37+
  run single test from tests2,  optionally update .expect
* new variable GEN-ALWAYS to always generate certain .expects
* bitfields test
tccgen.c:
* bitfields: fix a bug and improve slightly more
* _Generic: ignore "type match twice"
2017-07-14 19:26:01 +02:00