https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89013
Bug ID: 89013 Summary: ice for packed attribute Product: gcc Version: 9.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: dcb314 at hotmail dot com Target Milestone: --- For this C source code on recent gcc trunk: typedef struct { } __attribute__((__packed__)) a; typedef const a *b; c(b *d) { b e = c(e); } I get bug499.c:4:1: internal compiler error: Segmentation fault 0xe5d9f7 crash_signal ../../trunk/gcc/toplev.c:326 0x8faba4 contains_struct_check(tree_node*, tree_node_structure_enum, char const* , int, char const*) ../../trunk/gcc/tree.h:3289 0x8faba4 check_address_or_pointer_of_packed_member ../../trunk/gcc/c-family/c-warn.c:2762 0x8faba4 check_and_warn_address_or_pointer_of_packed_member ../../trunk/gcc/c-family/c-warn.c:2838 $ ~/gcc/results/bin/gcc -v Using built-in specs. COLLECT_GCC=/home/dcb/gcc/results/bin/gcc COLLECT_LTO_WRAPPER=/home/dcb/gcc/results.268100/libexec/gcc/x86_64-pc-linux-gnu/9.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../trunk/configure --prefix=/home/dcb/gcc/results.268100 --disable-multilib --disable-werror --enable-checking=df,extra,fold,rtl,yes --enable-languages=c,c++,fortran Thread model: posix gcc version 9.0.0 20190119 (experimental) (GCC) $ This seems to go wrong sometime between revision 267300 and 267400.