https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65507
Bug ID: 65507
Summary: avr-gcc -f-merge-all-constants causes internal
compiler error in get_section, at varasm.c:312
Product: gcc
Version: 4.8.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dfnsonfsduifb at gmx dot de
Compiler:
Using built-in specs.
COLLECT_GCC=/home/joe/bin/gcc/avr/bin/avr-gcc
COLLECT_LTO_WRAPPER=/home/joe/bin/gcc/avr/libexec/gcc/avr/4.8.1/lto-wrapper
Target: avr
Configured with: ../configure --prefix=/home/joe/bin/gcc/avr/ --with-gnu-ld
--with-gnu-as --with-dwarf2 --disable-werror --disable-threads --disable-nls
--disable-shared --disable-libssp --disable-libmudflap --disable-libgomp
--target=avr --enable-languages=c --with-system-zlib --enable-target-optspace
Thread model: single
gcc version 4.8.1 (GCC)
Running on Linux, x86_64. avr-libc v1.8.0.
Complete test program that demonstrates the problem:
#include <stdio.h>
#include <avr/pgmspace.h>
volatile int running;
void foobar() {
char lcdText[33];
const char *pgmstr = running ? PSTR("Run!") : PSTR("STOP");
snprintf(lcdText, 32, "%4S", pgmstr);
}
Description of problem:
When this is compiled with -fmerge-all-constants, a internal compiler error is
triggered. The example compiles successfully without -fmerge-all-constants.
$ avr-gcc -mmcu=atmega128 -fmerge-all-constants -c -o crap crap.c
crap.c:10:1: internal compiler error: in get_section, at varasm.c:312
}
^
0x90611f get_section(char const*, unsigned int, tree_node*)
../../gcc/varasm.c:312
0x91da3f avr_asm_select_section
../../gcc/config/avr/avr.c:8368
0x90e83a assemble_variable(tree_node*, int, int, int)
../../gcc/varasm.c:2013
0x910205 varpool_assemble_decl(varpool_node*)
../../gcc/varpool.c:313
0x578478 output_in_order
../../gcc/cgraphunit.c:1837
0x578478 compile()
../../gcc/cgraphunit.c:2037
0x578689 finalize_compilation_unit()
../../gcc/cgraphunit.c:2119
0x4b5383 c_write_global_declarations()
../../gcc/c/c-decl.c:10118
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
