https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65771
Bug ID: 65771
Summary: [5 Regression] ICE (in loc_list_from_tree, at
dwarf2out.c:14964) on arm-linux-gnueabihf
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at gcc dot gnu.org
seen with r222064 on arm-linux-gnueabihf, building the nauty package.
$ cat traces.i
typedef struct {
int tolevel;
int tgtsize;
} TracesSpine;
__thread TracesSpine a[];
b;
fn1() { int c = a[b].tgtsize; }
$ gcc -c -g -O2 traces.i
traces.i:6:1: warning: data definition has no type or storage class
b;
^
traces.i:6:1: warning: type defaults to 'int' in declaration of 'b'
[-Wimplicit-int]
traces.i:7:1: warning: return type defaults to 'int' [-Wimplicit-int]
fn1() { int c = a[b].tgtsize; }
^
traces.i:5:22: warning: array 'a' assumed to have one element
__thread TracesSpine a[];
^
traces.i: In function 'fn1':
traces.i:7:1: internal compiler error: in loc_list_from_tree, at
dwarf2out.c:14964
fn1() { int c = a[b].tgtsize; }
^
0x2cd239 loc_list_from_tree
../../src/gcc/dwarf2out.c:14964
0x2cc037 loc_list_from_tree
../../src/gcc/dwarf2out.c:14663
0x2cc54d loc_list_from_tree
../../src/gcc/dwarf2out.c:14870
0x2cbee7 loc_list_from_tree
../../src/gcc/dwarf2out.c:14700
0x2ce05f loc_descriptor_from_tree
../../src/gcc/dwarf2out.c:15033
0x2ce0e1 tls_mem_loc_descriptor
../../src/gcc/dwarf2out.c:11593
0x2ce7a3 loc_descriptor
../../src/gcc/dwarf2out.c:13576
0x2ce821 loc_descriptor
../../src/gcc/dwarf2out.c:13601
0x2ceb55 dw_loc_list_1
../../src/gcc/dwarf2out.c:13878
0x2cbba7 dw_loc_list
../../src/gcc/dwarf2out.c:14148
0x2cbba7 loc_list_from_tree
../../src/gcc/dwarf2out.c:14584
0x2cfcaf add_location_or_const_value_attribute
../../src/gcc/dwarf2out.c:16092
0x2bc6ed gen_variable_die
../../src/gcc/dwarf2out.c:19281
0x2c298f gen_decl_die
../../src/gcc/dwarf2out.c:21025
0x2bdc23 process_scope_var
../../src/gcc/dwarf2out.c:20540
0x2bdd95 decls_for_scope
../../src/gcc/dwarf2out.c:20565
0x2be683 gen_subprogram_die
../../src/gcc/dwarf2out.c:18873
0x2c2d25 gen_decl_die
../../src/gcc/dwarf2out.c:20958
0x2c38bf dwarf2out_decl
../../src/gcc/dwarf2out.c:21391
0x2c3ef3 dwarf2out_function_decl
../../src/gcc/dwarf2out.c:21399
Please submit a full bug report,
with preprocessed source if appropriate.
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabihf/5/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
5.1~rc1-0ubuntu11' --with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-5 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=c++98 --enable-gnu-unique-object --disable-libitm
--disable-libquadmath --enable-plugin --with-system-zlib
--disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-armhf/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-armhf
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-armhf
--with-arch-directory=arm --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --enable-multilib --disable-sjlj-exceptions
--with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=hard --with-mode=thumb
--disable-werror --enable-multilib --enable-checking=yes
--build=arm-linux-gnueabihf --host=arm-linux-gnueabihf
--target=arm-linux-gnueabihf
Thread model: posix
gcc version 5.0.1 20150413 (prerelease) [gcc-5-branch revision 222064] (Ubuntu
5.1~rc1-0ubuntu11)
