https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110510
Bug ID: 110510
Summary: ggc infinite recursion
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: franckbehaghel_gcc at protonmail dot com
Target Milestone: ---
Created attachment 55444
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55444&action=edit
source
Hello,
The attached ada source file fails to build. I got the following result:
$ gcc -c failed_ggc.adb
failed_ggc.adb:3:11: warning: file name does not match unit name, should be
"main.adb" [enabled by default]
raised STORAGE_ERROR : stack overflow or erroneous memory access
Looking into this with gdb, it gaves me more detailed information :
$ gcc -c -wrapper gdb,--args failed_ggc.adb
[...]
Program received signal SIGSEGV, Segmentation fault.
0x00000000010592c3 in gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e0410) at
gtype-desc.cc:3582
3582 gt_ggc_m_7rtx_def ((*x).landing_pad);
[...]
backtrace output looks like a infinite recursion :
(gdb) bt
#0 0x00000000010592c3 in gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e0410) at
gtype-desc.cc:3582
#1 gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e0438) at gtype-desc.cc:3579
#2 0x00000000010592d4 in gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e0438) at
gtype-desc.cc:3582
#3 gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e0460) at gtype-desc.cc:3579
#4 0x00000000010592d4 in gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e0460) at
gtype-desc.cc:3582
#5 gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e0488) at gtype-desc.cc:3579
#6 0x00000000010592d4 in gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e0488) at
gtype-desc.cc:3582
#7 gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e04b0) at gtype-desc.cc:3579
#8 0x00000000010592d4 in gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e04b0) at
gtype-desc.cc:3582
#9 gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e04d8) at gtype-desc.cc:3579
#10 0x00000000010592d4 in gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e04d8) at
gtype-desc.cc:3582
#11 gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e0500) at gtype-desc.cc:3579
#12 0x00000000010592d4 in gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e0500) at
gtype-desc.cc:3582
#13 gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e0528) at gtype-desc.cc:3579
#14 0x00000000010592d4 in gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e0528) at
gtype-desc.cc:3582
#15 gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e0550) at gtype-desc.cc:3579
#16 0x00000000010592d4 in gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e0550) at
gtype-desc.cc:3582
#17 gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e0578) at gtype-desc.cc:3579
#18 0x00000000010592d4 in gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e0578) at
gtype-desc.cc:3582
#19 gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e05a0) at gtype-desc.cc:3579
#20 0x00000000010592d4 in gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e05a0) at
gtype-desc.cc:3582
#21 gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffd26e05c8) at gtype-desc.cc:3579
(gdb) bt -50
#4193802 0x00000000010592d4 in gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffca638c80)
at gtype-desc.cc:3582
#4193803 gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffca638ca8) at gtype-desc.cc:3579
#4193804 0x00000000010592d4 in gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffca638ca8)
at gtype-desc.cc:3582
#4193805 gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffca638cd0) at gtype-desc.cc:3579
#4193806 0x00000000010592d4 in gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffca638cd0)
at gtype-desc.cc:3582
#4193807 gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffca638cf8) at gtype-desc.cc:3579
#4193808 0x000000000105939c in gt_ggc_mx_eh_landing_pad_d (x_p=0x7fffca638cf8)
at gtype-desc.cc:3577
#4193809 gt_ggc_mx_eh_region_d (x_p=0x7fffd9141738) at gtype-desc.cc:3567
#4193810 0x00000000010593f0 in gt_ggc_mx_eh_region_d (x_p=0x7fffd9141738) at
gtype-desc.cc:3562
#4193811 gt_ggc_mx_eh_region_d (x_p=0x7fffd91416e0) at gtype-desc.cc:3549
#4193812 0x000000000105a0d0 in gt_ggc_mx_eh_region_d (x_p=0x7fffd91416e0) at
gtype-desc.cc:3614
#4193813 gt_ggc_mx_eh_status (x_p=0x7fffea7522d0) at gtype-desc.cc:2259
#4193814 0x000000000105cefe in gt_ggc_mx_function (x_p=0x7fffe94610b8) at
gtype-desc.cc:1720
#4193815 gt_ggc_mx_function (x_p=0x7fffe94610b8) at gtype-desc.cc:1715
#4193816 0x0000000000a1fc2a in gt_ggc_mx_lang_tree_node (x_p=<optimized out>)
at ./gtype-ada.h:288
#4193817 0x0000000000a1fb87 in gt_ggc_mx_lang_tree_node (x_p=<optimized out>)
at ./gtype-ada.h:277
#4193818 0x0000000000a1f158 in gt_ggc_mx_lang_tree_node (x_p=<optimized out>)
at ./gtype-ada.h:191
#4193819 0x0000000000a1f5be in gt_ggc_mx_lang_tree_node (x_p=<optimized out>)
at ./gtype-ada.h:420
#4193820 0x0000000001059cdf in gt_ggc_mx_gimple (x_p=<optimized out>) at
gtype-desc.cc:1254
#4193821 0x000000000105afba in gt_ggc_mx_cgraph_edge (x_p=<optimized out>) at
gtype-desc.cc:1422
#4193822 0x000000000105af9e in gt_ggc_mx_cgraph_edge (x_p=<optimized out>) at
gtype-desc.cc:1420
#4193823 0x000000000105af9e in gt_ggc_mx_cgraph_edge (x_p=<optimized out>) at
gtype-desc.cc:1420
#4193824 0x000000000105af9e in gt_ggc_mx_cgraph_edge (x_p=<optimized out>) at
gtype-desc.cc:1420
#4193825 0x000000000105af9e in gt_ggc_mx_cgraph_edge (x_p=<optimized out>) at
gtype-desc.cc:1420
#4193826 0x000000000105af9e in gt_ggc_mx_cgraph_edge (x_p=<optimized out>) at
gtype-desc.cc:1420
#4193827 0x000000000105af9e in gt_ggc_mx_cgraph_edge (x_p=<optimized out>) at
gtype-desc.cc:1420
#4193828 0x000000000105ade7 in gt_ggc_mx_symtab_node (x_p=<optimized out>) at
gtype-desc.cc:1368
#4193829 0x0000000000a1f1dd in gt_ggc_mx_lang_tree_node (x_p=<optimized out>)
at ./gtype-ada.h:200
#4193830 0x0000000001057d1a in gt_ggc_mx_rtx_def (x_p=<optimized out>) at
gtype-desc.cc:732
#4193831 0x0000000001059724 in gt_ggc_mx (x=@0x7fffd57c66b8: 0x7fffdaab8810) at
gtype-desc.cc:1701
#4193832 gt_ggc_mx<rtx_def*> (v=<optimized out>) at
/DATA/git/gcc/gcc/gcc/vec.h:1370
#4193833 gt_ggc_mx_vec_rtx_va_gc_ (x_p=0x7fffd57c6000) at gtype-desc.cc:1693
#4193834 gt_ggc_mx_vec_rtx_va_gc_ (x_p=0x7fffd57c6000) at gtype-desc.cc:1688
#4193835 0x0000000000fca426 in ggc_mark_root_tab (rt=<optimized out>) at
/DATA/git/gcc/gcc/gcc/ggc-common.cc:75
#4193836 0x0000000000fca75d in ggc_mark_roots () at
/DATA/git/gcc/gcc/gcc/ggc-common.cc:92
#4193837 0x0000000000decd62 in ggc_collect (mode=GGC_COLLECT_HEURISTIC) at
/DATA/git/gcc/gcc/gcc/ggc-page.cc:2227
#4193838 0x000000000121d947 in execute_one_pass (pass=0x367f170) at
/DATA/git/gcc/gcc/gcc/passes.cc:2743
#4193839 0x000000000121da70 in execute_pass_list_1 (pass=0x367f170) at
/DATA/git/gcc/gcc/gcc/passes.cc:2760
#4193840 0x000000000121da82 in execute_pass_list_1 (pass=0x367de90) at
/DATA/git/gcc/gcc/gcc/passes.cc:2761
#4193841 0x000000000121daa9 in execute_pass_list (fn=0x7fffe94610b8,
pass=<optimized out>) at /DATA/git/gcc/gcc/gcc/passes.cc:2771
#4193842 0x0000000000e78d86 in cgraph_node::expand (this=0x7fffdf8b3990) at
/DATA/git/gcc/gcc/gcc/context.h:48
#4193843 cgraph_node::expand (this=0x7fffdf8b3990) at
/DATA/git/gcc/gcc/gcc/cgraphunit.cc:1794
#4193844 0x0000000000e79f0a in output_in_order () at
/DATA/git/gcc/gcc/gcc/cgraphunit.cc:2191
#4193845 symbol_table::compile (this=0x7fffea68d000) at
/DATA/git/gcc/gcc/gcc/cgraphunit.cc:2395
#4193846 0x0000000000e7cb58 in symbol_table::compile (this=<error reading
variable: dwarf2_find_location_expression: Corrupted DWARF expression.>)
at /DATA/git/gcc/gcc/gcc/cgraphunit.cc:2583
#4193847 symbol_table::finalize_compilation_unit (this=0x7fffea68d000) at
/DATA/git/gcc/gcc/gcc/cgraphunit.cc:2583
#4193848 0x0000000001323ce2 in compile_file () at
/DATA/git/gcc/gcc/gcc/toplev.cc:471
#4193849 0x00000000009d20ca in do_compile (no_backend=false) at
/DATA/git/gcc/gcc/gcc/toplev.cc:2126
Version 13.1 is fine.
Version 14 until b106f11dc6adb8df15cc5c268896d314c76ca35f "c++: Accept
elaborated-enum-base with pedwarn" is fine.
Version 14 starting from 154c69039571c66b3a6d16ecfa9e6ff22942f59f "RA: Ignore
conflicts for some pseudos from insns throwing a final exception" are affected
by this crash.
Compiler Explorer on trunk is affected too. (https://godbolt.org/)
gcc -c -I/app/ -g -fdiagnostics-color=always -S -fverbose-asm -masm=intel -o
/app/example.s -I- <source>
gnatmake: "<source>" compilation error
example.adb:3:11: warning: file name does not match unit name, should be
"main.adb" [enabled by default]
raised STORAGE_ERROR : stack overflow or erroneous memory access
Compiler returned: 4
Latent bug or side effect excluded, I would say that gcc-14-1891-g154c6903957
is the change to blame.
I cannot understand just one word of this change. But some skilled gcc
maintainers may.
Best regards,
Franck
