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305 Commits

Author SHA1 Message Date
Rui Ueyama 1433b404d6 [GNU] Add __builtin_types_compatible_p 2020-12-07 12:00:06 +09:00
Rui Ueyama 7d80a5136d Add typeof 2020-12-07 12:00:06 +09:00
Rui Ueyama 007e526ec5 [GNU] Support GCC-style variadic macro 2020-12-07 12:00:06 +09:00
Rui Ueyama 74ec9f6f39 Ignore #pragma 2020-12-07 12:00:06 +09:00
Rui Ueyama 083c27559e [GNU] Handle ,##__VA_ARG__ 2020-12-07 12:00:06 +09:00
Rui Ueyama 338144869f Add __VA_OPT__ 2020-12-07 12:00:06 +09:00
Rui Ueyama 3a10c8aa44 [GNU] Add __BASE_FILE__ macro 2020-12-07 12:00:06 +09:00
Rui Ueyama 922604ae1e [GNU] Add __TIMESTAMP__ macro 2020-12-07 12:00:06 +09:00
Rui Ueyama aaf20fb96e [GNU] Add line marker directive 2020-12-07 12:00:06 +09:00
Rui Ueyama c61c0d0025 Add #line 2020-12-07 12:00:06 +09:00
Rui Ueyama 37998be0c1 Improve error message for multibyte characters 2020-12-07 12:00:06 +09:00
Rui Ueyama 95eb5b01b3 Handle struct designator for anonymous struct member 2020-12-07 12:00:06 +09:00
Rui Ueyama 31dc1dfa21 Add union designated initializer 2020-12-07 12:00:06 +09:00
Rui Ueyama 67f5834378 Add struct designated initializer 2020-12-07 12:00:06 +09:00
Rui Ueyama 691c4fac15 [GNU] Allow to omit "=" in designated initializers 2020-12-07 12:00:06 +09:00
Rui Ueyama 835cd24b2c Allow array designators to initialize incomplete arrays 2020-12-07 12:00:06 +09:00
Rui Ueyama c618c3b582 Add array designated initializer 2020-12-07 12:00:06 +09:00
Rui Ueyama 2b2fa25507 Skip UTF-8 BOM markers 2020-12-07 12:00:06 +09:00
Rui Ueyama 238277714d Allow to concatenate regular string literals with L/u/U string literals 2020-12-07 12:00:06 +09:00
Rui Ueyama adb8b98889 [GNU] Accept $ as an identifier character 2020-12-07 12:00:06 +09:00
Rui Ueyama 0e5d250ebf Allow multibyte UTF-8 character in identifier 2020-12-07 12:00:06 +09:00
Rui Ueyama e4491b8115 Define __STDC_UTF_{16,32}__ macros 
These predefined macros indicates that our u and U chars/strings
are UTF-16 and UTF-32-encoded, respectively.
 2020-12-07 12:00:06 +09:00
Rui Ueyama 6adba75af8 Add UTF-32 string literal initializer 2020-12-07 12:00:06 +09:00
Rui Ueyama 36230e0827 Add UTF-16 string literal initializer 2020-12-07 12:00:06 +09:00
Rui Ueyama cae061af2b Add wide string literal 2020-12-07 12:00:06 +09:00
Rui Ueyama c467ee665d Add UTF-32 string literal 2020-12-07 12:00:06 +09:00
Rui Ueyama 9cabe1f204 Add UTF-16 string literal 2020-12-07 12:00:06 +09:00
Rui Ueyama 57b21fe902 Add UTF-8 string literal 2020-12-07 12:00:06 +09:00
Rui Ueyama 2dac3afece Add UTF-32 character literal 2020-12-07 12:00:06 +09:00
Rui Ueyama 454618cd15 Add UTF-16 character literal 2020-12-07 12:00:06 +09:00
Rui Ueyama a57c661d46 Accept multibyte character as wide character literal 
On most Unix-like systems, wide character literal is 32-bit long
and encodes a Unicode code point. On Windows, that is 16-bit
long and encodes a UTF-16 code unit. Clearly, there's a portability
issue here. Personally I've never used wide characters in my code
as I didn't find it useful.

Being said that, some header files contain wide character literal,
so we need to support that so that chibicc can include such files.

We assume that source files are always encoded in UTF-8.
 2020-12-07 12:00:06 +09:00
Rui Ueyama c31886aa7a Add \u and \U escape sequences 2020-12-07 12:00:06 +09:00
Rui Ueyama 74bcec5b22 Canonicalize newline character 2020-12-07 12:00:06 +09:00
Rui Ueyama 0e77f3dff8 [GNU] Add __COUNTER__ macro 2020-12-07 12:00:06 +09:00
Rui Ueyama e27417fcde Add __DATE__ and __TIME__ macros 2020-12-07 12:00:06 +09:00
Rui Ueyama c3075b3030 Add anonymous struct and union 2020-12-07 12:00:06 +09:00
Rui Ueyama 9c36dd727c Make "main" to implicitly return 0 2020-12-07 12:00:06 +09:00
Rui Ueyama 5257ee0f20 Make an array of at least 16 bytes long to have alignment of at least 16 bytes 
Quote from AMD64 System V ABI: "An array uses the same alignment as
its elements, except that a local or global array variable of length
at least 16 bytes or a C99 variable-length array variable always has
alignment of at least 16 bytes."
 2020-12-07 12:00:06 +09:00
Rui Ueyama 2c91da54df Turn on -Wall compiler flag and fix compiler warnings 2020-12-07 12:00:06 +09:00
Rui Ueyama b1fdddff15 Ignore -O, -W and -g and other flags 2020-12-07 12:00:06 +09:00
Rui Ueyama 2bdc6b800c Write to an in-memory buffer before writing to an actual output file 
We don't want to leave a partial assembly output if the compiler
fails during compilation.

Technically speaking, there's still a risk of leaving a partially-
written output file if the compiler dies during file copy. To fix
that, we have to write to a temporary file in the same filesystem as
the final output file and rename the temporary file to atomically
replace the output file. We don't do that in this patch for the sake
of succinctness, though.
 2020-12-07 12:00:06 +09:00
Rui Ueyama c302a969d8 Do not allow to obtain an address of a bitfield 2020-12-07 12:00:06 +09:00
Rui Ueyama 17ea802cea Handle zero-width bitfield member 2020-12-07 12:00:06 +09:00
Rui Ueyama 54c2b3b18f Handle op=-style assignments to bitfields 2020-12-07 12:00:06 +09:00
Rui Ueyama 441a89b80b Support global struct bitfield initializer 2020-12-07 12:00:06 +09:00
Rui Ueyama cc852fe99d Add bitfield 2020-12-07 12:00:06 +09:00
Rui Ueyama be8b6f6d31 Add -U option 2020-12-07 12:00:06 +09:00
Rui Ueyama fc69f5c6f9 Add -D option 2020-12-07 12:00:06 +09:00
Rui Ueyama 3f2c2d5bca Tokenize numeric tokens as pp-numbers 2020-12-07 12:00:06 +09:00
Rui Ueyama e0b5da3b39 Dereferencing a function shouldn't do anything 
This is an oddity in the C spec, but you can apply the unary `*`
operator to a function as many times as you want. `*x` and `x`
means exactly the same, given that `x` is a function.
 2020-12-07 12:00:06 +09:00