https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78836
Bug ID: 78836
Summary: ICE in get_source_location_for_substring, at
input.c:1461
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: preprocessor
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
With some local changes to the gimple-ssa-sprintf.c pass I'm intermittently
seeing the following ICE. It only shows up every few runs of the compiler and
is sensitive to things like its pathname. It doesn't seem to be reproducible
in GDB and Valgrind doesn't report anything. I'll see if I can reduce it to a
test case independent of my local changes, or maybe build a sanitized GCC. I
report now in case the problem jumps out at you David (or someone else familiar
with this area).
$ /home/msebor/build/gcc-78703/gcc/xgcc -B/home/msebor/build/gcc-78703/gcc -S
-Wformat -Wformat-length=1 ice.c
...
ice.c:85:6: internal compiler error: in get_source_location_for_substring, at
input.c:1461
void test_sprintf_c_const (void)
^~~~~~~~~~~~~~~~~~~~
0x1a1f144 get_source_location_for_substring(cpp_reader*, string_concat_db*,
unsigned int, cpp_ttype, int, int, int, unsigned int*)
/src/gcc/78703/gcc/input.c:1461
0x8496bd c_get_substring_location(substring_loc const&, unsigned int*)
/src/gcc/78703/gcc/c-family/c-common.c:865
0xed797b substring_loc::get_location(unsigned int*) const
/src/gcc/78703/gcc/substring-locations.c:194
0xed7667 format_warning_va(substring_loc const&, source_range const*, char
const*, int, char const*, __va_list_tag (*) [1])
/src/gcc/78703/gcc/substring-locations.c:112
0xed792a format_warning_at_substring(substring_loc const&, source_range const*,
char const*, int, char const*, ...)
/src/gcc/78703/gcc/substring-locations.c:179
0x18c83cb add_bytes
/src/gcc/78703/gcc/gimple-ssa-sprintf.c:2268
0x18c914b compute_format_length
/src/gcc/78703/gcc/gimple-ssa-sprintf.c:2694
0x18ca0fc handle_gimple_call
/src/gcc/78703/gcc/gimple-ssa-sprintf.c:3071
0x18ca1cd execute
/src/gcc/78703/gcc/gimple-ssa-sprintf.c:3099
Please submit a full bug report,
with preprocessed source if appropriate.
