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go/misc/cgo
Keith Randall 94076feef5 cmd/cgo: check function argument/return types for bad C pointer types
We need to determine whether arguments to and return values from C
functions are "bad" typedef'd pointer types which need to be uintptr
on the Go side.

The type of those arguments are not specified explicitly. As a result,
we never look through the C declarations for the GetTypeID functions
associated with that type, and never realize that they are bad.
However, in another function in the same package there might be an
explicit reference. Then we end up with the declaration being uintptr
in one file and *struct{...} in another file. Badness ensues.

Fix this by doing a 2-pass algorithm. In the first pass, we run as
normal, but record all the argument and result types we see. In the
second pass, we include those argument types also when reading the C
types.

Fixes #24161

Change-Id: I8d727e73a2fbc88cb9d9899f8719ae405f59f753
Reviewed-on: https://go-review.googlesource.com/122575
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2018-07-09 22:19:21 +00:00
..
errors cmd/go: accept only limited compiler and linker flags in #cgo directives 2018-02-07 15:35:57 +00:00
fortran *.bash: always use the same string equality operator 2017-03-14 21:46:31 +00:00
gmp all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00
life test: remove rundircmpout and cmpout actions 2018-05-31 17:36:45 +00:00
nocgo cmd/ld: really import runtime/cgo for external link 2014-05-20 21:36:50 -07:00
stdio test: remove rundircmpout and cmpout actions 2018-05-31 17:36:45 +00:00
test cmd/cgo: check function argument/return types for bad C pointer types 2018-07-09 22:19:21 +00:00
testasan runtime: more flexible heap memory mapping on 64-bits 2013-06-12 18:47:16 +04:00
testcarchive misc/cgo/testcarchive: increase timeout duration in TestOsSignal 2018-07-06 13:55:35 +00:00
testcshared misc/cgo/testcshared: use file descriptor 30 for TestUnexportedSymbols 2018-04-21 04:18:51 +00:00
testgodefs cmd/cgo: add -srcdir option 2016-10-30 19:14:08 +00:00
testplugin runtime: restore r2 when restoring state from gobuf in gogo on ppc64x 2018-06-11 12:13:11 +00:00
testsanitizers cmd/cgo: mark C result as written for msan 2018-07-05 05:15:15 +00:00
testshared testshared/src/depBase: conform build tag comment to convention 2018-07-06 02:04:54 +00:00
testsigfwd misc/cgo/testsigfwd: add missing return statement 2016-08-30 21:44:14 +00:00
testso cmd/dist: convert testso test into Go 2015-06-12 04:33:50 +00:00
testsovar misc/cgo/testsovar: needs the extern keyword to export variables on non-windows platforms 2015-07-21 18:10:57 +00:00
testtls all: make copyright headers consistent with one space after period 2016-05-02 13:43:18 +00:00