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Commit Graph

2645 Commits

Author SHA1 Message Date
Petr Skocik
f2fd56a27d turn -fdollars-in-identifiers on by default
gcc and clang do it too
2019-06-11 13:45:22 +02:00
Petr Skocik
60ceab1453 in c11 mode, skip __STDC_ISO_10646__
The macro conflicts (=> redef warnings in a simple hello world)
with a definition introduced by glibc headers and
it's probably not "necessary" anyway since clang doesn't use it.
2019-06-11 13:43:24 +02:00
Petr Skocik
18a2ed2936 make -h|-hh succeed if the output is successfully written 2019-06-11 12:42:26 +02:00
Michael Matz
d04ce7772c Don't allow section switches in local asm instructions
GCC wouldn't be able to implement this either (due to the separate
phases of compilation and assembly).  We could allow it but it
makes not much sense and actively can confuse broken code into
segfaulting TCC.  At least we can warn.

Warning exposes a problem in tcctest, and fixing that gives us
an opportunity to also test .pushsection/.popsection and .previous
directive support.
2019-05-30 21:31:35 +02:00
Vlad Vissoultchev
1dd6842654
Don't drop asm_label hack on external symbols for win32 DLL exports 2019-05-14 22:37:13 +03:00
matthias
cf3d23741f add tests for cleanup loop
- Also fix some gcc warning
2019-05-03 12:32:55 +02:00
matthias
14be3a1dc1 fix cleanup with for loop initialisation
Signed-off-by: matthias <uso.cosmo.ray@gmail.com>
2019-05-03 12:32:55 +02:00
matthias
0d54946dec fix cleanup with break and continue
fix cleanup
2019-05-03 12:32:55 +02:00
Michael Matz
d30bc6d00a _Static_assert must be followed by semicolon
as per the C11 grammar.
2019-05-03 00:22:35 +02:00
matthias gatto
e371642e6b _Static_assert test 2019-04-28 08:27:33 +02:00
matthias
5a0101856b add C11 _Static_assert support 2019-04-28 01:07:21 +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
c07e81b087 Tidy some code
the real difference is in decl0 where we can use external_sym
just fine also for function definitions, we don't have to use
external_global_sym.  Setting VT_EXTERN in external_sym isn't
necessary either (the type will have it set if necessary).
The rest is tidying: removing unused arguments and moving
some code around.
2019-04-18 03:42:23 +02:00
Christian Jullien
f2461096b1 Add minimal includes and .def files to support, by default, BSD socket programming on Windows. 2019-04-16 07:26:04 +02:00
Michael Matz
c16dadbb97 win64: make signal handlers work somewhat
we can register a top-level exception filter which does
nothing else than call into _XcptFilter (provided by
the default C runtime environment) and signal handlers
for the few POSIX signals that Windows can handle start
working (that includes e.g. SEGV).
2019-04-15 20:02:45 +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
Ziga Lenarcic
fa0ef91a24 With -run -nostdlib use "_start" as the entry symbol. 2019-04-07 13:44:07 +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
d00f98a7a5 Fix 98_al_ax_extend.c compile error
this test is run only on i386 so its failing went unnoticed for
a while, since 1fd3709379.  IS_ASM_SYMs should not be tested
for conflicting types, the C typing overrides.
2019-04-07 02:44:32 +02:00
Devin Hussey
9382a3ad58 C11 conformance: Add _Noreturn, stdnoreturn.h, and partial _Alignas support
_Noreturn, just like __attribute__((noreturn)), is ignored.
I also added stdnoreturn.h, in all its glorious uselessness.

_Alignas only works for integer expressions right now. In order
to comply, we need:
 - _Alignas(type) -> _Alignas(_Alignof(type)).
 - stdalign.h as soon as it is done.

Note: DR 444 is supported; it works on struct members.

Signed-off-by: Devin Hussey <husseydevin@gmail.com>
2019-03-20 15:03:27 -04:00
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
d72b877e45 Fix invalid memory access in preprocess_end
when an error is thrown macro_stack might point to
unwound local variables, we can't access them.
2019-03-15 13:17:58 +01:00
Vincent Lefevre
be7c870718 Fix va_end() definition: must be an expression of type void
Also added a test yielding a failure with the previous definition,
i.e. when using: (va_end(ap));

The test also checks potentially incorrect va_start() definition.
2019-03-14 15:39:52 +01:00
Vincent Lefevre
920f773a81 Fix "make -j test"
The clean-s rule must be run before the tests, not at the same time!
2019-03-14 14:59:27 +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
matthias
b082659f19 fix segv in "{,}" combound literal 2019-03-06 18:51:13 +01:00
Michael Matz
fef838db2d Fix relocs of unwanted sections
relocation sections to sections we don't want to handle lead
to segfaults, handle this situation (by ignoring the relocs
as well).
2019-03-04 16:53:24 +01:00
Michael Matz
749d19d70b Fix sub-int returns on x86-64 and i386
the ABIs (and other compilers) extend sub-int return values in the
caller.  TCC extends them in the callee.  For compatibility with
those other compilers we have extend them in the caller as well.
That introduces a useless double extension in pure TCC-compiled code,
but fixing that generally requires that the code generator of TCC would
understand sub-int types.  For the time being bite the bullet.
2019-02-10 18:27:41 +01:00
Michael Matz
5f737fb4d3 tidy code 2019-01-31 01:04:55 +01:00
Michael Matz
5c862a08b4 suppress code after continue as well
fix an oversight in code suppression
2019-01-31 00:37:49 +01:00
matthias
d27ea5155f remove incr/decr_local_scope functions 2019-01-29 21:32:38 +01:00
Michael Matz
08e22d8ad2 More cleanup tests
test3 wasn't working originally.
2019-01-28 05:54:19 +01:00
Michael Matz
4cc802a88e Tidy new support for cleanups
encode most things in Syms, do only as much work as necessary
(e.g. pending cleanups), don't track scopes in a large
structure (instead encode the scopes with cleanups directly
in the cleanups tree).  Removes ca. 120 lines of code.
2019-01-28 05:54:19 +01:00
Detlef Riekenberg
5d805a90e3 tcc.c: Fix outdated help info for the std option
the std option is no longer ignored

--
bye bye ... Detlef

Signed-off-by: Detlef Riekenberg <tcc.dev@web.de>
2019-01-27 17:32:11 +01:00
matthias
46145af4a1 remove C99 'for' loop initial declarations 2019-01-23 19:42:04 +01:00
matthias
5010023428 remove outdated comment 2019-01-23 17:21:14 +01:00
matthias
de92fbee7e add a cleanup test that use a lot of scope 2019-01-23 17:21:14 +01:00
matthias
26f0cf0708 Fix scope limit for cleanup attribute
old implementation use only a global static array for storing
ScopeTracker which have the advantage to be fast, but you can't
use cleanup in a function that have move than SCOPE_TCK_STORE_SIZE
scopes.

I don't want to use only dynarray_* as it would slow down tcc for
every functions, so I keep both stores.
2019-01-23 17:21:14 +01:00
matthias
ff38d90d5d Add attribute cleanup test 2019-01-23 17:21:14 +01:00
matthias
0d91ba749c Add gcc attribute cleanup support
The major difficulty was to handle cleanup when a goto happen
to do so, I've had a "ScopeTracker" struct.
I can't use local_scope because that would not work with code like below
as local_scope would be at the same level:

{
    char * __attribute__ ((cleanup(clean_function))) str = "hej";
    goto next;
}
{
    next:
}
2019-01-23 17:21:14 +01:00
Giovanni Mascellani
f6be0d483b
Fix read() usage in tccelf.c.
read() is allowed to short-read, and return less bytes then requested.
The caller must restart read() when this happens (and they want more
bytes).

This patch is still buggy, because errors are not always checked.
Still, less buggy than before.
2019-01-13 15:20:39 +01:00
Christian Jullien
acac38afb2 Add C99 compiliant iso646.h header 2019-01-13 10:24:50 +01:00
Michael Matz
45b8b0e57d Revert 337dc84b (other -static fix)
this should work now with 05f6aa1a.
2019-01-13 06:01:59 +01:00