GCC modified for the FreeChainXenon project
e9e32ee6e8
PR c/68162 reports a spurious warning about incompatible types involving arrays of const double, constructed in one place using a typedef for const double and in another place literally using const double. The problem is that the array of the typedef was incorrectly constructed without a TYPE_MAIN_VARIANT being an array of unqualified elements as it should be (though it seems some more recent change resulted in this producing incorrect diagnostics, likely the support for C++-style handling of arrays of qualified type). This patch fixes the logic in grokdeclarator to determine first_non_attr_kind, which is used to determine whether it is necessary to use the TYPE_MAIN_VARIANT of the type in the declaration specifiers. However, fixing that logic introduces a failure of gcc.dg/debug/dwarf2/pr47939-4.c, a test introduced along with first_non_attr_kind. Thus, it is necessary to track the original qualified typedef when qualifying an array type, to use it rather than a newly-constructed type, to avoid regressing regarding typedef names in debug info. This is done along lines I suggested in <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47939#c6>: track the original type and the number of levels of array indirection at which it appears, and, in possibly affected cases, pass extra arguments to c_build_qualified_type (with default arguments to avoid needing to pass those extra arguments explicitly everywhere). Given Richard's recent fix to dwarf2out.c, this allows the C bug to be fixed without causing debug information regressions. Bootstrapped with no regressions on x86_64-pc-linux-gnu. gcc/c: PR c/68162 * c-decl.c (grokdeclarator): Set first_non_attr_kind before following link from declarator to next declarator. Track original qualified type and pass it to c_build_qualified_type. * c-typeck.c (c_build_qualified_type): Add arguments orig_qual_type and orig_qual_indirect. gcc/c-family: PR c/68162 * c-common.h (c_build_qualified_type): Add extra default arguments. gcc/cp: PR c/68162 * tree.c (c_build_qualified_type): Add extra arguments. gcc/testsuite: PR c/68162 * gcc.dg/pr68162-1.c: New test. From-SVN: r231194 |
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| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
| intl | ||
| libada | ||
| libatomic | ||
| libbacktrace | ||
| libcc1 | ||
| libcilkrts | ||
| libcpp | ||
| libdecnumber | ||
| libffi | ||
| libgcc | ||
| libgfortran | ||
| libgo | ||
| libgomp | ||
| libiberty | ||
| libitm | ||
| libjava | ||
| libmpx | ||
| libobjc | ||
| liboffloadmic | ||
| libquadmath | ||
| libsanitizer | ||
| libssp | ||
| libstdc++-v3 | ||
| libvtv | ||
| lto-plugin | ||
| maintainer-scripts | ||
| zlib | ||
| .dir-locals.el | ||
| .gitignore | ||
| ABOUT-NLS | ||
| ChangeLog | ||
| ChangeLog.jit | ||
| ChangeLog.tree-ssa | ||
| compile | ||
| config-ml.in | ||
| config.guess | ||
| config.rpath | ||
| config.sub | ||
| configure | ||
| configure.ac | ||
| COPYING | ||
| COPYING.LIB | ||
| COPYING.RUNTIME | ||
| COPYING3 | ||
| COPYING3.LIB | ||
| depcomp | ||
| install-sh | ||
| libtool-ldflags | ||
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| ltoptions.m4 | ||
| ltsugar.m4 | ||
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| lt~obsolete.m4 | ||
| MAINTAINERS | ||
| Makefile.def | ||
| Makefile.in | ||
| Makefile.tpl | ||
| missing | ||
| mkdep | ||
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| README | ||
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