[Ngspice-users] [xspice] free(): invalid pointer

[BERTRAND J. <joe...@sy...>]

	Hello,

	For several days, I see at the end of simulation

free(): invalid pointer

	or

double corruption error

	valgrind shows Invalid free() / delete / delete[] / realloc()
with the following trace :

==770496== Invalid free() / delete / delete[] / realloc()
==770496==    at 0x484217B: free (vg_replace_malloc.c:872)
==770496==    by 0x488D85E: cm_pswitch_callback (cfunc.c:90)
==770496==    by 0x93F274: MIFdelete (mifdelete.c:92)
==770496==    by 0x488869A: MIFdelete (dlmain.c:202)
==770496==    by 0x9052F3: CKTdestroy (cktdest.c:53)
==770496==    by 0x220D6A: if_cktfree (spiceif.c:587)
==770496==    by 0x21C4BA: com_remcirc (runcoms2.c:218)
==770496==    by 0x2070FB: com_quit (misccoms.c:106)
==770496==    by 0x1C95BE: docommand (control.c:241)
==770496==    by 0x1C9F06: doblock (control.c:535)
==770496==    by 0x1CB62E: cp_evloop (control.c:870)
==770496==    by 0x1E4066: inp_spsource (inp.c:1124)
==770496==  Address 0x6d052a0 is 0 bytes inside a block of size 64 free'd
==770496==    at 0x484217B: free (vg_replace_malloc.c:872)
==770496==    by 0x488D85E: cm_pswitch_callback (cfunc.c:90)
==770496==    by 0x93D9C1: MIFunsetup (mifsetup.c:551)
==770496==    by 0x4888523: MIFunsetup (dlmain.c:146)
==770496==    by 0x90898B: CKTunsetup (cktsetup.c:168)
==770496==    by 0x9062B9: CKTdoJob (cktdojob.c:152)
==770496==    by 0x220479: if_run (spiceif.c:358)
==770496==    by 0x21BDCB: dosim (runcoms.c:332)
==770496==    by 0x21BFBC: com_run (runcoms.c:394)
==770496==    by 0x1C95BE: docommand (control.c:241)
==770496==    by 0x1C9F06: doblock (control.c:535)
==770496==    by 0x1CB62E: cp_evloop (control.c:870)
==770496==  Block was alloc'd at
==770496==    at 0x48445EF: calloc (vg_replace_malloc.c:1328)
==770496==    by 0x488D9EF: cm_pswitch (cfunc.c:190)
==770496==    by 0x93A4E5: MIFload (mifload.c:447)
==770496==    by 0x4888553: MIFload (dlmain.c:153)
==770496==    by 0x916CDB: CKTload (cktload.c:64)
==770496==    by 0x9F2693: NIiter (niiter.c:40)
==770496==    by 0x91719C: CKTop (cktop.c:44)
==770496==    by 0x941943: EVTop (evtop.c:135)
==770496==    by 0x91BDCA: DCtran (dctran.c:212)
==770496==    by 0x90649B: CKTdoJob (cktdojob.c:232)
==770496==    by 0x220479: if_run (spiceif.c:358)
==770496==    by 0x21BDCB: dosim (runcoms.c:332)

	I have tried to fix this issue, but there is a lot of cfunc.c files...
That being said, MIFunsetup and MIFdelete try to free the same pointer.

	Best regards,

	JB