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) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30773-2078653b96) Lines: 1139 1487 76.6 %
Date: 2026-04-02 09:26:53 Functions: 132 162 81.5 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
bl_rotleft 66447988
bl_rotright 60849848
blockbalance 2849980978
blockdelete 1575631612
blockheight 11864254052
blockinsert 1728693625
cgetg_copy_avma 1060955782
cgetlist_avma 620
chk_gc_upto 0
clone_lock 370822851
clone_unlock 311589532
clone_unlock_deep 59318160
clonesearch 741349729
copy_bin 472729907
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 14032
err_init_msg 13897
err_recover 13069
errname 27109
export_add 59
export_del 24
export_get 1499
exportall 6
f_getheap 6734
fix_height 3082211949
fix_size 750288
gc_all_unsafe 27377489
gc_dec 6011226519
gc_slice_unsafe 330386585
gc_stack_update 1235861846
gclone 237433650
gclone_refc 0
gcloneref 37887
gcopy 4885308510
gcopy_av0 4034718447
gcopy_av0_canon 84
gcopy_avma 3380898361
gcopy_lg 742
gdisplay 3703
gerepile 0
getabstime 1890
getdebugvar 372814
getheap 84
getstack 7
gettime 3710
getwalltime 0
gp_context_restore 13144
gp_context_save 146044
gsizebyte 175
gsizeclone 237433454
gsizeclone_i 3473624116
gsizeword 2214450
gunclone 388530561
gunclone_deep 3278960902
icopy_avma_canon 12
init_universal_constants 1890
is_in_block 233993653
list_internal_copy 7026
listassign 7026
listcopy 730
listinit 0
msgtimer 0
name_numerr 0
new_chunk_resize 18
newblock 238281952
numerr_name 27109
obj_check 6033702
obj_checkbuild 1507420
obj_checkbuild_padicprec 539
obj_checkbuild_prec 568477
obj_checkbuild_realprec 399100
obj_free 187740
obj_init 2533403
obj_insert 2661636
obj_insert_shallow 173572
obj_reinit 42
os_signal 20730
pari_add_defaults_module 1890
pari_add_module 1880
pari_close 1880
pari_close_blocks 366406
pari_close_export 1880
pari_close_opts 1880
pari_daemon 76
pari_err 56841
pari_err2GEN 56829
pari_err2str 21873
pari_err_display 13090
pari_err_last 87496
pari_exit 0
pari_handle_SIGINT 0
pari_init 0
pari_init_blocks 374696
pari_init_defaults 1890
pari_init_errcatch 375147
pari_init_export 1890
pari_init_functions 1890
pari_init_opts 1890
pari_init_timer 1890
pari_mainstack_alloc 375149
pari_mainstack_free 375139
pari_mainstack_malloc 375149
pari_mainstack_mextend 496718
pari_mainstack_mfree 375139
pari_mainstack_mreset 496718
pari_mainstack_resize 445
pari_mainstack_setsize 496718
pari_mainstack_use 374697
pari_sig_init 3770
pari_sighandler 0
pari_sigint 0
pari_stackcheck_init 376585
pari_thread_alloc 372814
pari_thread_close 373308
pari_thread_free 372814
pari_thread_get_global 372814
pari_thread_init 374694
pari_thread_set_global 372774
pari_thread_start 372806
pari_thread_valloc 0
pari_version 7
pari_warn 942
paristack_alloc 1890
paristack_newrsize 452
paristack_resize 0
paristack_setsize 0
parivstack_reset 121569
parivstack_resize 0
pop_entree_block 390088
rndus 221720
setalldebug 1918
setdebug 127
setdebugvar 372775
shiftaddress 3096890499
shiftaddress_canon 76
taille0 4034618916
taille0_canon 84
timer 0
timer2 0
timer_aux 221720
timer_delay 111767
timer_get 1896
timer_printf 0
timer_start 358228
timer_vprintf 0
timetoi 0
traverseheap 84
traverseheap_r 13552
type_dim 7308
unexportall 6
vec_gunclone_deep 134582675
walltimer_delay 108057
walltimer_get 0
walltimer_start 253432

Generated by: LCOV version 1.16