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Stefan 829c848520 tccpp.c: Configurable integer literal overflow handling
Add the define TCC_CUT_ON_INTEGER_LITERAL_OVERFLOW to use the most
significant digits of an integer literal before its parsing led to an
overflow.

When compiling tcc with another compiler, which is not able to handle
64 bit arithmetic, it is beneficial to use the last value before an
integer literal overflows. Parsing 0x1000000000000000 then results in
0x10000000. The mescc from GNU Mes is able to compile a first tcc on a
32 bit system without 64 bit arithmetic. This change allows this first
tcc to compile a second tcc with complete 64 bit arithmetic.
2025-12-13 18:53:15 +01:00
.github/workflows github CI: pinact run -u 2025-12-02 16:31:13 +01:00
examples makefile: unify cross with native builds 2017-02-25 12:51:04 +01:00
include Add bound check support for alloca on all targets 2025-11-29 07:54:28 +01:00
lib Add bound check support for alloca on all targets 2025-11-29 07:54:28 +01:00
tests Add bound check support for alloca on all targets 2025-11-29 07:54:28 +01:00
win32 Add WM_MOUSEHWHEEL to winuser.h 2025-11-26 11:10:10 +13:00
.gitignore make: make shorter command lines 2024-11-30 20:05:02 +01:00
arm64-asm.c Revert "Move almost all global variables to TCCState, actually all tests pass on Ubuntu 18.04 x86_64" 2021-10-22 07:39:54 +02:00
arm64-gen.c Change asm into __asm__ in previous commit 2025-11-17 19:17:53 +01:00
arm64-link.c Add support for backtrace() 2024-11-09 08:04:45 +01:00
arm-asm.c arm-asm: Accept additional register names 2025-05-07 22:29:46 +02:00
arm-gen.c Change asm into __asm__ in previous commit 2025-11-17 19:17:53 +01:00
arm-link.c tccgen.c: fix two scope problems 2025-08-22 19:14:44 +02:00
arm-tok.h arm-asm: Accept additional register names 2025-05-07 22:29:46 +02:00
c67-gen.c tccgen: local scope for types of function parameters 2025-08-18 21:06:03 +02:00
c67-link.c div fixes 2024-06-11 14:26:34 +02:00
Changelog configury update & bump VERSION to 0.9.28rc 2023-09-06 22:42:52 +02:00
CodingStyle CodingStyle: Remove reference to misaligned struct CString. 2016-01-06 19:09:28 +00:00
coff.h Spelling fixes in C comments only 2017-05-07 21:38:09 -07:00
configure tccpe: add COFF symbol table for GDB 2025-09-08 17:22:21 +02:00
conftest.c configury update & bump VERSION to 0.9.28rc 2023-09-06 22:42:52 +02:00
COPYING changed license to LGPL 2003-05-24 14:18:56 +00:00
dwarf.h Add dwarf support 2022-05-05 09:10:37 +02:00
elf.h dynamic executables (PIE) 2022-07-24 09:44:50 +02:00
i386-asm.c i386-asm.c: Optional % for variables in specific registers 2025-09-21 13:18:37 +02:00
i386-asm.h Add endbr32 for i386 2025-07-14 08:27:14 +02:00
i386-gen.c Change asm into __asm__ in previous commit 2025-11-17 19:17:53 +01:00
i386-link.c div fixes 2024-06-11 14:26:34 +02:00
i386-tok.h x86asm: Add lzcnt/tzcnt support 2022-12-13 11:34:54 +01:00
il-gen.c revert "Save registers around attribute cleanup" (almost) 2025-05-25 00:20:23 +02:00
il-opcodes.h Revert all of my changes to directories & codingstyle. 2015-07-29 16:57:12 -04:00
libtcc.c Add bound check support for alloca on all targets 2025-11-29 07:54:28 +01:00
libtcc.h tccrun: resign from "advanced" system calls (memaligh/gettid) 2024-02-25 19:55:06 +01:00
Makefile Makefile: Add space behind 'install -m' 2025-10-03 17:58:45 +02:00
optclash tcc options: document behavior and clashes (no-op) 2025-10-27 14:50:54 +02:00
README Reverts & cleanups 2025-10-09 13:08:33 +02:00
RELICENSING Relicensing TinyCC 2024-08-11 15:18:36 +02:00
riscv64-asm.c rv64: Implement some pseudo-ops from Zicsr 2025-11-29 21:11:46 +02:00
riscv64-gen.c rv64: Generate VT_CMP output from float comparison 2025-12-02 07:30:31 +02:00
riscv64-link.c Update for clang -fsanitize 2025-07-29 08:26:57 +02:00
riscv64-tok.h Implement some RV64F/D instructions 2025-11-28 15:23:07 +02:00
stab.def Revert all of my changes to directories & codingstyle. 2015-07-29 16:57:12 -04:00
stab.h Revert all of my changes to directories & codingstyle. 2015-07-29 16:57:12 -04:00
tcc-doc.texi linker options & tcc_load_ldscript() reworked 2025-03-28 21:23:19 +01:00
tcc.c tcc -run: support custom stdin with -rstdin FILE 2025-10-27 14:50:56 +02:00
tcc.h Add bound check support for alloca on all targets 2025-11-29 07:54:28 +01:00
tccasm.c allow cross compiling for alloca on arm64 2025-12-01 18:09:04 +01:00
tcccoff.c tcc_error_noabort(): always use this unless compiling 2023-04-25 15:22:03 +02:00
tccdbg.c Some fixes and cleanups 2025-10-16 07:35:27 +02:00
tccelf.c elf: Set ph sizes only if ph was allocated 2025-11-29 22:28:36 +02:00
tccgen.c Set TYPE_PARAM parsing mode in old-style param lists 2025-12-02 07:30:27 +02:00
tcclib.h Revert all of my changes to directories & codingstyle. 2015-07-29 16:57:12 -04:00
tccmacho.c linker options & tcc_load_ldscript() reworked 2025-03-28 21:23:19 +01:00
tccpe.c tccpe: add COFF symbol table for GDB 2025-09-08 17:22:21 +02:00
tccpp.c tccpp.c: Configurable integer literal overflow handling 2025-12-13 18:53:15 +01:00
tccrun.c Change asm into __asm__ in previous commit 2025-11-17 19:17:53 +01:00
tcctok.h Add bound check support for alloca on all targets 2025-11-29 07:54:28 +01:00
tcctools.c tcc.c:main() free all & etc... 2025-08-18 20:43:52 +02:00
texi2pod.pl Revert all of my changes to directories & codingstyle. 2015-07-29 16:57:12 -04:00
TODO testing 2025-07-21 00:48:51 -03:00
USES configury update & bump VERSION to 0.9.28rc 2023-09-06 22:42:52 +02:00
VERSION configury update & bump VERSION to 0.9.28rc 2023-09-06 22:42:52 +02:00
x86_64-asm.h x86-64: Fix cvts*2si 2025-12-03 17:21:00 +02:00
x86_64-gen.c Change asm into __asm__ in previous commit 2025-11-17 19:17:53 +01:00
x86_64-link.c div fixes 2024-06-11 14:26:34 +02:00

Tiny C Compiler - C Scripting Everywhere - The Smallest ANSI C compiler
-----------------------------------------------------------------------

Features:
--------

- SMALL! You can compile and execute C code everywhere, for example on
  rescue disks.

- FAST! tcc generates machine code for i386, x86_64, arm, aarch64 or
  riscv64.  Compiles and links about 10 times faster than 'gcc -O0'.

- UNLIMITED! Any C dynamic library can be used directly. TCC is
  heading toward full ISOC99 compliance. TCC can of course compile
  itself.

- SAFE! tcc includes an optional memory and bound checker. Bound
  checked code can be mixed freely with standard code.

- Compile and execute C source directly. No linking or assembly
  necessary. Full C preprocessor included.

- C script supported : just add '#!/usr/local/bin/tcc -run' at the first
  line of your C source, and execute it directly from the command
  line.

Documentation:
-------------

1) Installation on Linux, BSD variants or macOS hosts:

   ./configure
   make
   make test
   make install

   Notes: On BSD hosts, gmake should be used instead of make.
   For Windows read tcc-win32.txt.

makeinfo must be installed to compile the doc.  By default, tcc is
installed in /usr/local/bin.  ./configure --help  shows configuration
options.


2) Introduction

We assume here that you know ANSI C. Look at the example ex1.c to know
what the programs look like.

The include file <tcclib.h> can be used if you want a small basic libc
include support (especially useful for floppy disks). Of course, you
can also use standard headers, although they are slower to compile.

You can begin your C script with '#!/usr/local/bin/tcc -run' on the first
line and set its execute bits (chmod a+x your_script). Then, you can
launch the C code as a shell or perl script :-) The command line
arguments are put in 'argc' and 'argv' of the main functions, as in
ANSI C.

3) Examples

ex1.c: simplest example (hello world). Can also be launched directly
as a script: './ex1.c'.

ex2.c: more complicated example: find a number with the four
operations given a list of numbers (benchmark).

ex3.c: compute fibonacci numbers (benchmark).

ex4.c: more complicated: X11 program. Very complicated test in fact
because standard headers are being used ! As for ex1.c, can also be launched
directly as a script: './ex4.c'.

ex5.c: 'hello world' with standard glibc headers.

tcc.c: TCC can of course compile itself. Used to check the code
generator.

tcctest.c: auto test for TCC which tests many subtle possible bugs. Used
when doing 'make test'.

4) Full Documentation

Please read tcc-doc.html to have all the features of TCC.  Additional
information for the Windows port is in tcc-win32.txt.

License:
-------

TCC is distributed under the GNU Lesser General Public License (see
COPYING file).

Fabrice Bellard.