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David Faust 4f7aa145b7 btf: fix 'extern const void' variables [PR106773]
The eBPF loader expects to find BTF_KIND_VAR records for references to
extern const void symbols. We were mistakenly identifing these as
unsupported types, and as a result skipping emitting VAR records for
them.

In addition, the internal DWARF representation from which BTF is
produced does not generate 'const' modifier DIEs for the void type,
which meant in BTF the 'const' qualifier was dropped for 'extern const
void' variables. This patch also adds support for generating a const
void type in BTF to correct emission for these variables.

	PR target/106773

gcc/

	* btfout.cc (btf_collect_datasec): Correct size of void entries.
	(btf_dvd_emit_preprocess_cb): Do not skip emitting variables which
	refer to void types.
	(btf_init_postprocess): Create 'const void' type record if needed and
	adjust variables to refer to it as appropriate.

gcc/testsuite/

	* gcc.dg/debug/btf/btf-pr106773.c: New test.
2022-12-14 10:20:52 -08:00
c++tools Daily bump. 2022-11-24 00:17:47 +00:00
config Daily bump. 2022-11-15 08:32:29 +00:00
contrib contrib: add copyright for my scripts 2022-12-14 14:06:58 +01:00
fixincludes Daily bump. 2022-11-24 00:17:47 +00:00
gcc btf: fix 'extern const void' variables [PR106773] 2022-12-14 10:20:52 -08:00
gnattools Daily bump. 2022-09-01 00:17:39 +00:00
gotools Daily bump. 2022-08-31 00:16:45 +00:00
include btf: add 'extern' linkage for variables [PR106773] 2022-12-14 10:20:52 -08:00
INSTALL
intl Daily bump. 2022-11-24 00:17:47 +00:00
libada Daily bump. 2022-08-26 00:16:21 +00:00
libatomic Daily bump. 2022-11-17 00:16:52 +00:00
libbacktrace Daily bump. 2022-12-11 00:17:43 +00:00
libcc1 Daily bump. 2022-11-02 00:17:38 +00:00
libcody Daily bump. 2022-11-24 00:17:47 +00:00
libcpp Daily bump. 2022-12-08 00:17:45 +00:00
libdecnumber Daily bump. 2022-11-24 00:17:47 +00:00
libffi changelog: Fix extra space after tab. 2022-11-21 10:13:44 +01:00
libgcc Daily bump. 2022-12-09 00:18:54 +00:00
libgfortran Daily bump. 2022-10-13 00:17:37 +00:00
libgm2 Merge modula-2 front end onto gcc. 2022-12-14 17:43:08 +00:00
libgo libgo: bump major version 2022-12-12 14:18:14 -08:00
libgomp OpenMP/Fortran: Combined directives with map/firstprivate of same symbol 2022-12-14 14:11:45 +00:00
libiberty Daily bump. 2022-11-24 00:17:47 +00:00
libitm changelog: Fix extra space after tab. 2022-11-21 10:13:44 +01:00
libobjc changelog: Fix extra space after tab. 2022-11-21 10:13:44 +01:00
libphobos Daily bump. 2022-12-12 00:22:21 +00:00
libquadmath changelog: Fix extra space after tab. 2022-11-21 10:13:44 +01:00
libsanitizer Daily bump. 2022-12-14 00:18:37 +00:00
libssp Daily bump. 2022-10-13 00:17:37 +00:00
libstdc++-v3 libstdc++: Fix size passed to operator delete [PR108097] 2022-12-14 14:11:13 +00:00
libvtv changelog: Fix extra space after tab. 2022-11-21 10:13:44 +01:00
lto-plugin Daily bump. 2022-11-24 00:17:47 +00:00
maintainer-scripts Daily bump. 2022-12-01 00:17:51 +00:00
zlib Daily bump. 2022-11-24 00:17:47 +00:00
.dir-locals.el
.gitattributes
.gitignore .gitignore: do not ignore config.h 2022-07-19 17:07:04 +03:00
ABOUT-NLS
ar-lib
ChangeLog Daily bump. 2022-12-14 00:18:37 +00:00
ChangeLog.jit
ChangeLog.tree-ssa
compile
config-ml.in
config.guess
config.rpath
config.sub config.sub: change mode to 755. 2021-12-21 09:10:57 +01:00
configure Merge modula-2 front end onto gcc. 2022-12-14 17:43:08 +00:00
configure.ac Merge modula-2 front end onto gcc. 2022-12-14 17:43:08 +00:00
COPYING
COPYING.LIB
COPYING.RUNTIME
COPYING3
COPYING3.LIB
depcomp
install-sh
libtool-ldflags
libtool.m4 Generic configury support for shared libs on VxWorks 2022-10-11 07:31:07 +00:00
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
lt~obsolete.m4
MAINTAINERS MAINTAINERS: fix spacing 2022-12-09 11:08:55 +01:00
Makefile.def Merge modula-2 front end onto gcc. 2022-12-14 17:43:08 +00:00
Makefile.in Merge modula-2 front end onto gcc. 2022-12-14 17:43:08 +00:00
Makefile.tpl Merge modula-2 front end onto gcc. 2022-12-14 17:43:08 +00:00
missing
mkdep
mkinstalldirs
move-if-change
multilib.am
README
symlink-tree
test-driver
ylwrap

This directory contains the GNU Compiler Collection (GCC).

The GNU Compiler Collection is free software.  See the files whose
names start with COPYING for copying permission.  The manuals, and
some of the runtime libraries, are under different terms; see the
individual source files for details.

The directory INSTALL contains copies of the installation information
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See the file gcc/doc/gcc.texi (together with other files that it
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See http://gcc.gnu.org/bugs/ for how to report bugs usefully.

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