https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100230
Bug ID: 100230
Summary: ASan: alloc-dealloc-mismatch in early-remat.c
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: acoplan at gcc dot gnu.org
Target Milestone: ---
Bootstrapping on aarch64 --with-build-config=bootstrap-asan and running the
testsuite shows the following issue:
$ cat test.c
int a, b;
void c() {
while (b)
a += b++;
}
$ gcc/xgcc -B gcc -c test.c -march=armv8.2-a+sve -O2 -ftree-vectorize
=================================================================
==22323==ERROR: AddressSanitizer: alloc-dealloc-mismatch (operator new [] vs
operator delete) on 0xffff92f0d900
#0 0x75ed5c in operator delete(void*, unsigned long)
/home/alecop01/toolchain/src/gcc/libsanitizer/asan/asan_new_delete.cpp:172
#1 0x33b033c in sort_candidates
/home/alecop01/toolchain/src/gcc/gcc/early-remat.c:1062
#2 0x33b033c in run /home/alecop01/toolchain/src/gcc/gcc/early-remat.c:2567
#3 0x33b033c in execute
/home/alecop01/toolchain/src/gcc/gcc/early-remat.c:2629
#4 0x151ebd4 in execute_one_pass(opt_pass*)
/home/alecop01/toolchain/src/gcc/gcc/passes.c:2567
#5 0x15201a0 in execute_pass_list_1
/home/alecop01/toolchain/src/gcc/gcc/passes.c:2656
#6 0x15201c4 in execute_pass_list_1
/home/alecop01/toolchain/src/gcc/gcc/passes.c:2657
#7 0x1520270 in execute_pass_list(function*, opt_pass*)
/home/alecop01/toolchain/src/gcc/gcc/passes.c:2667
#8 0xbb7c34 in cgraph_node::expand()
/home/alecop01/toolchain/src/gcc/gcc/cgraphunit.c:1830
#9 0xbb7c34 in cgraph_node::expand()
/home/alecop01/toolchain/src/gcc/gcc/cgraphunit.c:1783
#10 0xbba6d4 in expand_all_functions
/home/alecop01/toolchain/src/gcc/gcc/cgraphunit.c:1994
#11 0xbba6d4 in symbol_table::compile()
/home/alecop01/toolchain/src/gcc/gcc/cgraphunit.c:2358
#12 0xbc18a8 in symbol_table::compile()
/home/alecop01/toolchain/src/gcc/gcc/cgraphunit.c:2271
#13 0xbc18a8 in symbol_table::finalize_compilation_unit()
/home/alecop01/toolchain/src/gcc/gcc/cgraphunit.c:2539
#14 0x1793f44 in compile_file
/home/alecop01/toolchain/src/gcc/gcc/toplev.c:482
#15 0x6d4ffc in do_compile
/home/alecop01/toolchain/src/gcc/gcc/toplev.c:2201
#16 0x6d4ffc in toplev::main(int, char**)
/home/alecop01/toolchain/src/gcc/gcc/toplev.c:2340
#17 0x6df804 in main /home/alecop01/toolchain/src/gcc/gcc/main.c:39
#18 0xffff973276dc in __libc_start_main
(/lib/aarch64-linux-gnu/libc.so.6+0x206dc)
#19 0x6e271c (/data/alecop01/builds/gcc11-bstrap-asan/gcc/cc1+0x6e271c)
0xffff92f0d900 is located 0 bytes inside of 28-byte region
[0xffff92f0d900,0xffff92f0d91c)
allocated by thread T0 here:
#0 0x75e16c in operator new[](unsigned long)
/home/alecop01/toolchain/src/gcc/libsanitizer/asan/asan_new_delete.cpp:102
#1 0x33b027c in sort_candidates
/home/alecop01/toolchain/src/gcc/gcc/early-remat.c:1056
#2 0x33b027c in run /home/alecop01/toolchain/src/gcc/gcc/early-remat.c:2567
#3 0x33b027c in execute
/home/alecop01/toolchain/src/gcc/gcc/early-remat.c:2629
#4 0x151ebd4 in execute_one_pass(opt_pass*)
/home/alecop01/toolchain/src/gcc/gcc/passes.c:2567
#5 0x15201a0 in execute_pass_list_1
/home/alecop01/toolchain/src/gcc/gcc/passes.c:2656
#6 0x15201c4 in execute_pass_list_1
/home/alecop01/toolchain/src/gcc/gcc/passes.c:2657
#7 0x1520270 in execute_pass_list(function*, opt_pass*)
/home/alecop01/toolchain/src/gcc/gcc/passes.c:2667
#8 0xbb7c34 in cgraph_node::expand()
/home/alecop01/toolchain/src/gcc/gcc/cgraphunit.c:1830
#9 0xbb7c34 in cgraph_node::expand()
/home/alecop01/toolchain/src/gcc/gcc/cgraphunit.c:1783
#10 0xbba6d4 in expand_all_functions
/home/alecop01/toolchain/src/gcc/gcc/cgraphunit.c:1994
#11 0xbba6d4 in symbol_table::compile()
/home/alecop01/toolchain/src/gcc/gcc/cgraphunit.c:2358
#12 0xbc18a8 in symbol_table::compile()
/home/alecop01/toolchain/src/gcc/gcc/cgraphunit.c:2271
#13 0xbc18a8 in symbol_table::finalize_compilation_unit()
/home/alecop01/toolchain/src/gcc/gcc/cgraphunit.c:2539
#14 0x1793f44 in compile_file
/home/alecop01/toolchain/src/gcc/gcc/toplev.c:482
#15 0x6d4ffc in do_compile
/home/alecop01/toolchain/src/gcc/gcc/toplev.c:2201
#16 0x6d4ffc in toplev::main(int, char**)
/home/alecop01/toolchain/src/gcc/gcc/toplev.c:2340
#17 0x6df804 in main /home/alecop01/toolchain/src/gcc/gcc/main.c:39
#18 0xffff973276dc in __libc_start_main
(/lib/aarch64-linux-gnu/libc.so.6+0x206dc)
#19 0x6e271c (/data/alecop01/builds/gcc11-bstrap-asan/gcc/cc1+0x6e271c)
The fix looks obvious.
