Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report
Current view: top level - language - init.c (source / functions) Coverage Total Hit
Test: PARI/GP v2.18.1 lcov report (development 31053-95e3b72995) Lines: 76.5 % 1488 1139
Test Date: 2026-07-24 17:03:07 Functions: 81.4 % 161 131
Legend: Lines:     hit not hit

Function Name Sort by function name Hit count Sort by function hit count
bl_rotleft 17554201
bl_rotright 13930668
blockbalance 600604084
blockdelete 353726257
blockheight 2518481626
blockinsert 393971670
cgetg_copy_avma 1083799582
cgetlist_avma 634
chk_gc_upto 0
clone_lock 347180409
clone_unlock 288305935
clone_unlock_deep 59318623
clonesearch 694804967
copy_bin 480632170
copy_bin_canon 24
dbg_fill_stack 0
dbg_gc_upto 0
dbg_stack 0
debug_stack 0
dflt_err_recover 0
dflt_pari_quit 0
dflt_sigint_fun 0
dochk_gc_upto 0
err_init 14039
err_init_msg 13897
err_recover 13090
errname 27109
export_add 59
export_del 24
export_get 1500
exportall 6
f_getheap 6734
fix_height 658636729
fix_size 757978
gc_all_unsafe 27494483
gc_dec 6111784800
gc_slice_unsafe 336651143
gc_stack_update 1261747764
gclone 236894169
gclone_refc 0
gcloneref 37887
gcopy 4911718696
gcopy_av0 4092396070
gcopy_av0_canon 84
gcopy_avma 3383685312
gcopy_lg 994
gdisplay 3710
gerepile 0
getabstime 1895
getdebugvar 376653
getheap 84
getstack 7
gettime 3724
getwalltime 0
gp_context_restore 13165
gp_context_save 146779
gsizebyte 175
gsizeclone 236894169
gsizeclone_i 3475920877
gsizeword 2214450
gunclone 388065657
gunclone_deep 3279530611
icopy_avma_canon 12
init_universal_constants 1895
is_in_block 242353538
list_internal_copy 7040
listassign 7040
listcopy 723
listinit 0
msgtimer 0
name_numerr 0
new_chunk_resize 18
newblock_t 237751722
numerr_name 27109
obj_check 6216277
obj_checkbuild 1507913
obj_checkbuild_padicprec 539
obj_checkbuild_prec 749665
obj_checkbuild_realprec 580288
obj_free 187789
obj_init 2533811
obj_insert 2662262
obj_insert_shallow 173838
obj_reinit 42
os_signal 20797
pari_add_defaults_module 1895
pari_add_module 1887
pari_close 1887
pari_close_blocks 378540
pari_close_export 1887
pari_close_opts 1887
pari_daemon 76
pari_err 56862
pari_err2GEN 56850
pari_err2str 21887
pari_err_display 13111
pari_err_last 87497
pari_exit 0
pari_handle_SIGINT 0
pari_init 0
pari_init_blocks 378548
pari_init_defaults 1895
pari_init_errcatch 379000
pari_init_export 1895
pari_init_functions 1895
pari_init_opts 1895
pari_init_timer 1895
pari_mainstack_alloc 378993
pari_mainstack_free 378985
pari_mainstack_malloc 378993
pari_mainstack_mextend 501129
pari_mainstack_mfree 378985
pari_mainstack_mreset 501129
pari_mainstack_resize 445
pari_mainstack_setsize 501129
pari_mainstack_use 378548
pari_sig_init 3782
pari_sighandler 0
pari_sigint 0
pari_stackcheck_init 380443
pari_thread_alloc 376653
pari_thread_close 378540
pari_thread_free 376653
pari_thread_get_global 376653
pari_thread_init 378548
pari_thread_set_global 376653
pari_thread_start 376653
pari_thread_valloc 0
pari_version 7
pari_warn 928
paristack_alloc 1895
paristack_newrsize 452
paristack_resize 0
paristack_setsize 0
parivstack_reset 122136
parivstack_resize 0
pop_entree_block 391033
rndus 222831
setalldebug 1923
setdebug 127
setdebugvar 376653
shiftaddress 3150634625
shiftaddress_canon 76
taille0 4092396072
taille0_canon 84
timer 0
timer2 0
timer_aux 222831
timer_delay 112327
timer_get 1901
timer_printf 0
timer_start 360268
timer_vprintf 0
timetoi 0
traverseheap 84
type_dim 7308
unexportall 6
vec_gunclone_deep 134774100
walltimer_delay 108603
walltimer_get 0
walltimer_start 254713

Generated by: LCOV version 2.0-1