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go/misc/cgo
KJ Tsanaktsidis 786120b55d cmd/cgo: document #include <> search path behaviour
cgo effectively prepends -I${SRCDIR} to the header include path of all
preambles it processes, so when an #include <> matches a header file
both in the source directory and also another include directory, the
local copy will be used in preference.

This behaviour is surprising but unfortunately also longstanding and
relied upon by packages in the wild, so the best we can do is to
document it.

Fixes #41059

Change-Id: If6d2818294b2bd94ea0fe5fd6ce77e54b3e167a6
Reviewed-on: https://go-review.googlesource.com/c/go/+/251758
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-09-01 23:12:18 +00:00
..
errors cmd/cgo: do not rewrite call if there are more args than parameters 2019-07-12 17:31:29 +00:00
fortran misc/cgo/fortran: avoid writing to $PWD 2019-11-20 22:37:23 +00:00
gmp
life misc: remove use of relative directories in overlayDir functions 2019-11-25 16:26:15 +00:00
nocgo
stdio misc: remove use of relative directories in overlayDir functions 2019-11-25 16:26:15 +00:00
test cmd/cgo: document #include <> search path behaviour 2020-09-01 23:12:18 +00:00
testasan misc: log 'ok' from 'go run' tests on success 2019-11-25 16:43:27 +00:00
testcarchive all: remove scattered remnants of darwin/arm 2020-04-08 18:35:49 +00:00
testcshared all: remove scattered remnants of darwin/arm 2020-04-08 18:35:49 +00:00
testgodefs cmd/cgo: in -godefs mode, don't change constant to type 2020-06-11 21:53:45 +00:00
testplugin misc/cgo/testplugin: fix typo in comment 2020-06-01 23:25:14 +00:00
testsanitizers runtime: save/restore callee saved registers in arm64's sigtramp 2019-06-03 19:02:11 +00:00
testshared cmd/link: don't mark shared library symbols reachable unconditionally 2020-07-27 16:04:55 +00:00
testsigfwd misc: log 'ok' from 'go run' tests on success 2019-11-25 16:43:27 +00:00
testso all: remove scattered remnants of darwin/arm 2020-04-08 18:35:49 +00:00
testsovar all: remove scattered remnants of darwin/arm 2020-04-08 18:35:49 +00:00
testtls