https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119553
Bug ID: 119553
Summary: ICE: SIGSEGV in gcov_position (gcov-io.cc:67) with
-fpath-coverage
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: gcov-profile
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Compiler output:
$ echo 'void foo(){}' | x86_64-pc-linux-gnu-gcc -fpath-coverage -xc - -wrapper
valgrind,-q
==11948== Invalid read of size 1
==11948== at 0x4E87329: ftell (in /lib64/libc.so.6)
==11948== by 0x111DAC3: gcov_position (gcov-io.cc:67)
==11948== by 0x111DAC3: gcov_write_tag(unsigned int) (gcov-io.cc:349)
==11948== by 0x2CCE8A6: find_paths(function*) (path-coverage.cc:533)
==11948== by 0x1578729: branch_prob(bool) (profile.cc:1616)
==11948== by 0x1788CC5: tree_profiling (tree-profile.cc:1932)
==11948== by 0x1788CC5: (anonymous
namespace)::pass_ipa_tree_profile::execute(function*) (tree-profile.cc:2061)
==11948== by 0x153A327: execute_one_pass(opt_pass*) (passes.cc:2659)
==11948== by 0x153B706: execute_ipa_pass_list(opt_pass*) (passes.cc:3112)
==11948== by 0x1110CF6: ipa_passes (cgraphunit.cc:2228)
==11948== by 0x1110CF6: symbol_table::compile() [clone .part.0]
(cgraphunit.cc:2351)
==11948== by 0x1113BFD: compile (cgraphunit.cc:2329)
==11948== by 0x1113BFD: symbol_table::finalize_compilation_unit()
(cgraphunit.cc:2607)
==11948== by 0x168F9E1: compile_file() (toplev.cc:479)
==11948== by 0xEFE99F: do_compile (toplev.cc:2208)
==11948== by 0xEFE99F: toplev::main(int, char**) (toplev.cc:2371)
==11948== by 0xF001ED: main (main.cc:39)
==11948== Address 0x1 is not stack'd, malloc'd or (recently) free'd
==11948==
during IPA pass: profile
<stdin>: In function 'foo':
<stdin>:1:1: internal compiler error: Segmentation fault
0x2df84a1 internal_error(char const*, ...)
/repo/gcc-trunk/gcc/diagnostic-global-context.cc:517
0x168f3af crash_signal
/repo/gcc-trunk/gcc/toplev.cc:322
0x111dac3 gcov_position
/repo/gcc-trunk/gcc/gcov-io.cc:67
0x111dac3 gcov_write_tag(unsigned int)
/repo/gcc-trunk/gcc/gcov-io.cc:349
0x2cce8a6 find_paths(function*)
/repo/gcc-trunk/gcc/path-coverage.cc:533
0x1578729 branch_prob(bool)
/repo/gcc-trunk/gcc/profile.cc:1616
0x1788cc5 tree_profiling
/repo/gcc-trunk/gcc/tree-profile.cc:1932
0x1788cc5 execute
/repo/gcc-trunk/gcc/tree-profile.cc:2061
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ x86_64-pc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-amd64/bin/x86_64-pc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-20250331105654-r15-9061-g5f2078ca11843e-checking-yes-rtl-df-extra-nobootstrap-amd64/bin/../libexec/gcc/x86_64-pc-linux-gnu/15.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--disable-bootstrap --with-cloog --with-ppl --with-isl
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=x86_64-pc-linux-gnu --with-ld=/usr/bin/x86_64-pc-linux-gnu-ld
--with-as=/usr/bin/x86_64-pc-linux-gnu-as --enable-libsanitizer
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-20250331105654-r15-9061-g5f2078ca11843e-checking-yes-rtl-df-extra-nobootstrap-amd64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.1 20250331 (experimental) (GCC)
