1. Workaround the smart clang diagnostics with -Qunused-arguments:
clang: error: argument unused during compilation: '-XXX'
2. if "clang -print-libgcc-file-name" returns non-absolute path, don't
provide that on linker command line.
3. Fix dwarf.PtrType.Size() in cmd/cgo as clang doesn't generate
DW_AT_byte_size for pointer types.
4. Workaround warnings for -Wno-unneeded-internal-declaration with
-Wno-unknown-warning-option.
5. Add -Wno-unused-function.
6. enable race detector test on darwin with clang
(at least Apple clang version 1.7 (tags/Apple/clang-77) works).
Requires CL 7354043.
Update #4829
This should fix most parts of the problem, but one glitch still remains.
DWARF generated by newer clang doesn't differentiate these
two function types:
void *malloc(size_t);
void *malloc(unsigned long int);
so you might need to do this to make make.bash pass:
sed -i -e 's/C.malloc(C.size_t/C.malloc(C.ulong/' pkg/os/user/lookup_unix.go
R=golang-dev, dave, iant, rsc
CC=golang-dev
https://golang.org/cl/7351044
This works with at least one version of clang
that existed at one moment in time.
No guarantees about clangs past or future.
To try:
CC=clang all.bash
It does not work with the Xcode clang,
because that clang fails at printing a useful answer
to:
clang -print-libgcc-file-name
The clang that works prints a full path name for
that command, not just "libgcc.a".
Fixes#4713.
R=iant, minux.ma
CC=golang-dev
https://golang.org/cl/7323068
Everybody either gets confused and thinks this is
TrimLeft/TrimRight or does this by hand which gets
repetitive looking.
R=rsc, kevlar
CC=golang-dev
https://golang.org/cl/7239044
Use wrapper functions to tell scheduler what we are doing.
With this patch, and a separate patch to the go tool, all the
cgo tests pass with gccgo.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6812058
Preparation for forthcoming CL 6624051: Will make it
easier to see if/what changes are incurred by it.
The alignment changes in this CL are due to CL 6610051
(fix to alignment heuristic) where it appears that an
old version of gofmt was run (and thus the correct
alignment updates were not done).
R=r
CC=golang-dev
https://golang.org/cl/6639044
This CL makes the size of an int controlled by a variable
in cgo instead of hard-coding 4 (or 32 bits) in various places.
Update #2188.
R=iant, r, dave
CC=golang-dev
https://golang.org/cl/6548061
Always process the DWARF info, even when the const value is determined
using the debug data block. This ensures that the injected enum is
removed and future loads of the same constant do not trigger
inconsistent definitions.
Add tests for issues 2470 and 4054.
Fixes#4054.
R=golang-dev, fullung, dave, rsc, minux.ma
CC=golang-dev
https://golang.org/cl/6501101
When generating enums use the debug data section instead of the
DWARF debug info, if it is available in the ELF file. This allows
mkerrors.sh to work correctly on OpenBSD/386 and NetBSD/386.
Fixes#2470.
R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6495090
LLVM-based gcc will place all-zero data in a zero-filled
section, but our debug/macho can't handle that.
Fixes#3821.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6444049
* disallow embedding of C type (Fixes issue 2552)
* detect 0-length array (Fixes issue 2806)
* use typedefs when possible, to avoid attribute((unavailable)) (Fixes issue 2888)
* print Go types constructed from C types using original C types (Fixes issue 2612)
This fix changes _cgo_export.h to repeat the preamble from import "C".
Otherwise the fix to issue 2612 is impossible, since it cannot refer to
types that have not been defined. If people are using //export and
putting non-header information in the preamble, they will need to
refactor their code.
R=golang-dev, r, r
CC=golang-dev
https://golang.org/cl/5672080
Only ParseFile, ParseDir, and ParseExpr are used in the tree.
If partial parsing of code is required, it is fairly simple
to wrap the relevant piece of code into a dummy package for
parsing (see parser.ParseExpr).
Also: minor cleanups.
R=rsc
CC=golang-dev
https://golang.org/cl/5535055
- Changed the Scan API semantics slightly:
The token literal string is only returned
if the token is a literal, comment, semicolon,
or illegal character. In all other cases, the
token literal value is determined by the token
value.
Clients that care about the token literal value
when not present can always use the following
piece of code:
pos, tok, lit := scanner.Scan()
if lit == "" {
lit = tok.String()
}
- Changed token.Lookup API to use a string instead
of a []byte argument.
- Both these changes were long-standing TODOs.
- Added BenchmarkScan.
This change permits a faster implementation of Scan
with much fewer string creations:
benchmark old ns/op new ns/op delta
scanner.BenchmarkScan 74404 61457 -17.40%
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5532076
clean is gone; all the intermediate files are created
in a temporary tree that is wiped when the command ends.
Not using go/build's Script because it is not well aligned
with this API. The various builder methods are copied from
go/build and adapted. Probably once we delete goinstall
we can delete the Script API too.
R=rogpeppe, adg, adg
CC=golang-dev
https://golang.org/cl/5483069
All but 3 cases (in gcimporter.go and hixie.go)
are automatic conversions using gofix.
No attempt is made to use the new Append functions
even though there are definitely opportunities.
R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5447069
Godefs was a C program that ran gcc and then parsed the
stabs debugging information in the resulting object file to
generate C or Go code for bootstrapping as part of
package runtime or package syscall.
Cgo does the same work, but using the dwarf debugging
information. Add -godefs and -cdefs options to cgo that
mimic godefs's output, albeit with different input
(a Go program, not a C program).
This has been a "nice to have" for a while but was forced
by Apple removing stabs debugging output from their
latest compilers.
Fixes#835.
Fixes#2338.
R=golang-dev, bradfitz, r, dave, iant
CC=golang-dev
https://golang.org/cl/5367043
Types are left as nil if no DWARF information is found and
checking in the rewriting pass so that appropriate errors
with line numbers can be printed.
Fixes#2408.
R=rsc
CC=golang-dev, remy
https://golang.org/cl/5336041
Change the signature of Split to have no count,
assuming a full split, and rename the existing
Split with a count to SplitN.
Do the same to package bytes.
Add a gofix module.
R=adg, dsymonds, alex.brainman, rsc
CC=golang-dev
https://golang.org/cl/4661051
This is a core API change.
1) gofix misc src
2) Manual adjustments to the following files under src/pkg:
gob/decode.go
rpc/client.go
os/error.go
io/io.go
bufio/bufio.go
http/request.go
websocket/client.go
as well as:
src/cmd/gofix/testdata/*.go.in (reverted)
test/fixedbugs/bug243.go
3) Implemented gofix patch (oserrorstring.go) and test case (oserrorstring_test.go)
Compiles and runs all tests.
R=r, rsc, gri
CC=golang-dev
https://golang.org/cl/4607052
That gcc does not include enumerator names and values
in its DWARF debug output. Create a data block from which
we can read the values instead.
Fixes#1881.
R=iant
CC=golang-dev
https://golang.org/cl/4607045
Fixes issue #1879.
Directives were not directly expanded, but since their
content ended up in makefiles, further expansion would
take place there. This prevents such artifacts by
restricting the set of characters that may be used in
a directive value.
To build the list of safe characters I went through the
contents of /usr/lib/pkgconfig and extracted LDFLAGS
and CFLAGS information, so hopefully this is a
reasonable default to get started.
R=rsc
CC=golang-dev
https://golang.org/cl/4532092
This means that the -x flag can work, which could enable
support for other languages (e.g. objective-C).
R=iant, rsc
CC=golang-dev
https://golang.org/cl/4476049
The recursive algorithm used to parse types in cgo
has a bug related to building the C type representation.
As an example, when the recursion starts at a type *T,
the C type representation won't be known until type T
itself is parsed. But then, it is possible that type T
references the type **T internally. The latter
representation is built based on the one of *T, which
started the recursion, so it won't attempt to parse it
again, and will instead use the current representation
value for *T, which is still empty at this point.
This problem was fixed by introducing a simple TypeRepr
type which builds the string representation lazily,
analogous to how the Go type information is built within
the same algorithm. This way, even if a type
representation is still unknown at some level in the
recursion, representations dependant on it can still
be created correctly.
R=rsc
CC=golang-dev
https://golang.org/cl/4244052
Fixes#1572.
Initially I tried changing things so all object
files get put in _obj, but it's too much - everything
needs changing. Perhaps some other time.
R=rsc
CC=golang-dev
https://golang.org/cl/4237050
Structs defined in C as containing a field with
an enum type are currently translated to Go as
a struct with an unsigned integer field, even if
some of the values contained in the enum are
negative.
This modification takes in consideration the values
defined in the enum, and conditionally defines the
Go type as signed if necessary.
The logic introduced was tested with gcc, which
will increase the type size if it contains both
negative numbers and values greater than 2^b/2-1,
and refuses to compile values which would be
problematic (2^64-1, but in fact the ISO C
restricts the range to the size of int).
R=rsc
CC=golang-dev
https://golang.org/cl/4119058
This enables #cgo directives to contain a os/arch
specification which restricts the definition of
the given option to matching systems.
For example:
#cgo amd64 CFLAGS: -DAMD64=1
#cgo linux CFLAGS: -DLINUX=1
#cgo linux/amd64 CFLAGS: -DLINUX_ON_AMD64=1
R=rsc
CC=golang-dev
https://golang.org/cl/4121048
If there were warnings or errors in the user code,
cgo would print the first error from gcc and then stop,
which is not helpful.
This CL makes cgo ignore errors from user code
in the first pass - they will be shown later.
It also prints errors from user preamble code
with the correct line numbers.
(Also fixed misleading usage message).
R=iant, rsc
CC=golang-dev
https://golang.org/cl/4082047
This change prevents enum consts from conflicting with themselves
when loaded twice in different go files.
Fixes#1400.
R=rsc
CC=golang-dev
https://golang.org/cl/3849044
#pragma dynexport is no longer needed for
this use of cgo, since the gcc and gc code are
now linked together into the same binary.
It may still be necessary later.
On the Mac, you cannot use the GOT to resolve
symbols that exist in the current binary, so 6l and 8l
translate the GOT-loading mov instructions into lea
instructions.
On ELF systems, we could use the GOT for those
symbols, but for consistency 6l and 8l apply the
same translation.
The translation is sketchy in the extreme
(depending on the relocation being in a mov
instruction) but it verifies that the instruction
is a mov before rewriting it to lea.
Also makes typedefs global across files.
Fixes#1335.
Fixes#1345.
R=iant, r
CC=golang-dev
https://golang.org/cl/3650042
Clean up an error message and error exit too.
Insert blank line after "DO NOT EDIT" comment
to keep it from being a doc comment.
Fixes#1213.
Fixes#1222.
R=r
CC=golang-dev
https://golang.org/cl/3608042
Specifically:
* lib/godoc:
- provide file set (FSet) argument to formatters where needed
* src/cmd:
- cgo, ebnflint, godoc, gofmt, goinstall: provide file set (fset) where needed
- godoc: remove local binary search with sort.Search (change by rsc),
extract file set for formatters
* src/pkg:
- exp/eval: remove embedded token.Position fields from nodes and replace
with named token.Pos fields; add corresponding Pos() accessor methods
- go/token: added file.Line(), changed signature of File.Position()
* test/fixedbugs/:
- bug206.go: change test to not rely on token.Pos details
* added various extra comments
* Runs all.bash
* gofmt formats all of src, misc w/o changes
* godoc runs
* performance:
- The new version of godoc consumes about the same space after indexing
has completed, but indexing is half the speed. Significant space savings
are expected from smaller ASTs, but since they are thrown away after a
file has been indexed, this is not visible anymore. The slower indexing
time is due to the much more expensive computation of line information.
However, with the new compressed position information, indexing can be
rewritten and simplified. Furthermore, computing the line info can be
done more efficiently.
New godoc, immediately after indexing completed (best of three runs):
PID COMMAND %CPU TIME #TH #PRTS #MREGS RPRVT RSHRD RSIZE VSIZE
44381 godoc 0.0% 0:38.00 4 19 149 145M 184K 148M 176M
2010/12/03 17:58:35 index updated (39.231s, 18505 unique words, 386387 spots)
2010/12/03 17:58:35 bytes=90858456 footprint=199182584
2010/12/03 17:58:36 bytes=47858568 footprint=167295224
Old godoc, immediately after indexing completed (best of three runs):
PID COMMAND %CPU TIME #TH #PRTS #MREGS RPRVT RSHRD RSIZE VSIZE
23167 godoc 0.0% 0:22.02 4 17 132 129M 184K 132M 173M
2010/12/03 14:51:32 index updated (24.892s, 18765 unique words, 393830 spots)
2010/12/03 14:51:32 bytes=66404528 footprint=163907832
2010/12/03 14:51:32 bytes=46282224 footprint=163907832
The different numbers for unique words/spots stem from the fact the the
two workspaces are not exactly identical. The new godoc maintains a large
file set data structure during indexing which (probably) is the reason
for the larger heap (90858456 vs 66404528) before garbage collection.
R=rsc, r
CC=golang-dev
https://golang.org/cl/3050041
- change ast.Ident back to contain the name and adjust all dependent code
- identifier object information will be added again through an optional
typechecker phase (in the works).
- remove tracking of scopes in parser - it's easier to do this in a separate
phase (in the works)
- in godoc, generate popup info table directly instead of through a formatter
for simpler data flow (at the expense of a little bit more code)
Runs all tests.
As a result of this change, the currently shown popup information
(const, var, type, func, followed by identifier name) will not be
shown anymore temporarily.
R=rsc
CC=golang-dev
https://golang.org/cl/1994041
* remember #defined names, so that C.stdout can refer
to the real name (on OS X) __stdoutp.
* better handling of #defined constant expressions
* allow n, err = C.strtol("asdf", 0, 123) to get errno as os.Error
* write all output files to current directory
* don't require gcc output if there was no input
Fixes#533.
Fixes#709.
Fixes#756.
R=r
CC=dho, golang-dev, iant
https://golang.org/cl/1734047
- gofmt -w src misc
- improves several lists and fixes minor degradation introduced
with the fix for issue 628
- removed some dead code (stringList)
R=rsc
CC=golang-dev
https://golang.org/cl/223058
- always include position information about opening/closing parens/braces
- replace uses of []*ast.Field with *ast.FieldList
Fixes#473.
R=rsc
CC=golang-dev
https://golang.org/cl/223043
- provide scope to parse functions; if non-nil, parser uses the scope
to declare and lookup identifiers
- resolve forward references where possible
R=rsc
CC=golang-dev
https://golang.org/cl/194098
- Identifiers refer now to the language entity (Object)
that they denote. At the moment this is at best an
approximation.
- Initial data structures for language entities (Objects)
and expression types (Type) independent of the actual
type notations.
- Initial support for declaring and looking up identifiers.
- Updated various dependent files and added support functions.
- Extensively tested to avoid breakage. This is an AST change.
R=rsc
CC=golang-dev, rog
https://golang.org/cl/189080
into consts in the resulting Go source. Previously known as issue 161047,
which I deleted accidentally. Fixes issue 207.
R=rsc
https://golang.org/cl/166059
parsing and printing to new syntax.
Use -oldparser to parse the old syntax,
use -oldprinter to print the old syntax.
2) Change default gofmt formatting settings
to use tabs for indentation only and to use
spaces for alignment. This will make the code
alignment insensitive to an editor's tabwidth.
Use -spaces=false to use tabs for alignment.
3) Manually changed src/exp/parser/parser_test.go
so that it doesn't try to parse the parser's
source files using the old syntax (they have
new syntax now).
4) gofmt -w src misc test/bench
1st set of files.
R=rsc
CC=agl, golang-dev, iant, ken2, r
https://golang.org/cl/180047
Ideally, the C name would come from the typedef or pointer that
references the Size<0 type, but we can't easily generate this without
performing a look-ahead to see if any referencing type will become opaque.
Fixes#334.
Fixes#281.
R=rsc
https://golang.org/cl/161056
- enabled for function declarations (not just function literals)
- applied gofmt -w $GOROOT/src
(look for instance at src/pkg/debug/elf/elf.go)
R=r, rsc
CC=go-dev
http://go/go-review/1026006
Firstly, with -Werror, GCC switched to printing warnings starting
with "error:". Widening the string matches solves this as the messages
are otherwise unchanged.
Secondly, GCC 4.4 outputs DWARF sections with with NUL bytes in all
the offsets and requires the relocation section for .debug_info to be
processed in order to result in valid DWARF data. Thus we add minimal
handling for relocation sections, which is sufficient for our needs.
BUG=1
Fixes#1.
R=rsc, iant
CC=go-dev
http://go/go-review/1017003
better mach binaries.
cgo working on darwin+linux amd64+386.
eliminated context switches - pi is 30x faster.
add libcgo to build.
on snow leopard:
- non-cgo binaries work; all tests pass.
- cgo binaries work on amd64 but not 386.
R=r
DELTA=2031 (1316 added, 626 deleted, 89 changed)
OCL=35264
CL=35304
gmp.go:197:4: type mpz_t C type mpz_t
gmp.go:205:2: call mpz_init C value func(mpz_ptr) void
gmp.go:206:2: call mpz_set C value func(mpz_ptr, mpz_srcptr) void
gmp.go:221:2: call mpz_init C value func(mpz_ptr) void
gmp.go:227:7: call size_t C type size_t
gmp.go:228:2: call mpz_export C value func(*void, *size_t, int, size_t, int, size_t, mpz_srcptr) *void
gmp.go:235:13: call mpz_sizeinbase C value func(mpz_srcptr, int) size_t
gmp.go:241:2: call mpz_set C value func(mpz_ptr, mpz_srcptr) void
gmp.go:252:3: call mpz_import C value func(mpz_ptr, size_t, int, size_t, int, size_t, *const void) void
gmp.go:261:2: call mpz_set_si C value func(mpz_ptr, long int) void
gmp.go:273:5: call mpz_set_str C value func(mpz_ptr, *const char, int) int
gmp.go:282:9: call mpz_get_str C value func(*char, int, mpz_srcptr) *char
gmp.go:287:3: call mpz_clear C value func(mpz_ptr) void
gmp.go:302:2: call mpz_add C value func(mpz_ptr, mpz_srcptr, mpz_srcptr) void
gmp.go:311:2: call mpz_sub C value func(mpz_ptr, mpz_srcptr, mpz_srcptr) void
gmp.go:320:2: call mpz_mul C value func(mpz_ptr, mpz_srcptr, mpz_srcptr) void
gmp.go:329:2: call mpz_tdiv_q C value func(mpz_ptr, mpz_srcptr, mpz_srcptr) void
gmp.go:339:2: call mpz_tdiv_r C value func(mpz_ptr, mpz_srcptr, mpz_srcptr) void
gmp.go:348:2: call mpz_mul_2exp C value func(mpz_ptr, mpz_srcptr, long unsigned int) void
gmp.go:356:2: call mpz_div_2exp C value func(mpz_ptr, mpz_srcptr, long unsigned int) void
gmp.go:367:3: call mpz_pow_ui C value func(mpz_ptr, mpz_srcptr, long unsigned int) void
gmp.go:369:3: call mpz_powm C value func(mpz_ptr, mpz_srcptr, mpz_srcptr, mpz_srcptr) void
gmp.go:378:2: call mpz_neg C value func(mpz_ptr, mpz_srcptr) void
gmp.go:386:2: call mpz_abs C value func(mpz_ptr, mpz_srcptr) void
gmp.go:404:9: call mpz_cmp C value func(mpz_srcptr, mpz_srcptr) int
gmp.go:413:2: call mpz_tdiv_qr C value func(mpz_ptr, mpz_ptr, mpz_srcptr, mpz_srcptr) void
gmp.go:426:2: call mpz_gcdext C value func(mpz_ptr, mpz_ptr, mpz_ptr, mpz_srcptr, mpz_srcptr) void
R=r
DELTA=938 (628 added, 308 deleted, 2 changed)
OCL=34733
CL=34791
Russ Cox
Shenghou Ma
Brad Fitzpatrick
Vladimir Nikishenko
Ian Lance Taylor
Robert Griesemer
Joel Sing
Rob Pike
Gustavo Niemeyer
Rémy Oudompheng
Joe Poirier
Jaroslavas Počepko
Alex Brainman
Dave Cheney
Roger Peppe
Sebastien Binet
Brad Fitzpatrick
Wei Guangjing
Eric Clark
Christian Himpel
Devon H. O'Dell
Moriyoshi Koizumi
Eden Li
Adam Langley