d7ef7d1258
CODE_CONTAINS_STRUCT () currently reports that a TRAIT_EXPR contains a TS_EXP struct, but it does not actually start with a TS_EXP as an initial sequence. In modules.cc, when we stream out a tree, we explicitly check for the TS_EXP case and call note_location(t->exp.locus) if so. Currently, this actually queries the tree_common::chain field of a tree_trait_expr, which seems not to be used, returning 0, which is interpreted as UNKNOWN_LOCATION and does no harm. If location_t will change to be 64 bytes, as is under discussion, then on 32-bit platforms (well those, such as sparc, on which uint64_t has higher alignment requirement than a pointer), reading t->exp.locus will end up reading a different field (tree_trait_expr::type1) due to padding offsets. That field is not generally 0, and the resulting bogus location_t is sufficiently problematic to cause an ICE in the line_map code. Pretty much any modules testcase displays the issue, such as partial-2_a.C. Resolve by initializing tree_contains_struct with the correct value for TRAIT_EXPR, namely TS_TYPED. gcc/cp/ChangeLog: * cp-objcp-common.cc (cp_common_init_ts): Change TRAIT_EXPR from TS_EXP to TS_TYPED. |
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| .forgejo | ||
| .github | ||
| c++tools | ||
| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
| gnattools | ||
| gotools | ||
| include | ||
| INSTALL | ||
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| libatomic | ||
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| libgcc | ||
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| libgm2 | ||
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| libgrust | ||
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| libitm | ||
| libobjc | ||
| libphobos | ||
| libquadmath | ||
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| libssp | ||
| libstdc++-v3 | ||
| libvtv | ||
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| maintainer-scripts | ||
| zlib | ||
| .b4-config | ||
| .dir-locals.el | ||
| .gitattributes | ||
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| COPYING.RUNTIME | ||
| COPYING3 | ||
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| depcomp | ||
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| libtool-ldflags | ||
| libtool.m4 | ||
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| Makefile.def | ||
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| SECURITY.txt | ||
| symlink-tree | ||
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