which have been invalidated by commit:
ifparm, #4/16, missing IF_REDUNDANT for some aliases, introduce IOPAPR
before this commit, sensitivity to "capacitance" was published twice,
once with name "c1" (reference name of a CAP device)
and as "c1_c" (reference name of a CAP concatenated with param name "c")
after said commit, sensitivity is no longer published as "c1_c"
(because "c" is only an "alias"/IF_REDUNDANT of the main parameter
which is named "capacitance", and "capacitance" is a IF_PRINCIPAL
and thus avoids "concatenation" of the parameter name)
identified and reported by Marcel Hendrix,
expressions of this kind could trigger a segmentation violation.
PTdifferentiate() roughly evaluates to
ternary_fcn(ge0(0-expr), 0, PTdifferentate(expr))
and mkb() optimizes
0 - expr --> unary_minus(expr)
IFeval() invokes PTeval() for the derivative too,
PTeval() looks at the incorrect tree->funcnum
and tries to PTeval for a second argument which is not there,
(unary_minus does not have a second argument)
causing a segmentation fault.
reported by Siddhant Saraf in
> [ngspice:discussion] "out of memory" error : simulating a 2bit AND gate"
This comes in two flavours,
1) an empty circuit
2) a xspice circuit with exclusively xspice event nodes
check xpressn.c parser capability to parse {2--3}
check .control parser capability to parse 2--3
check B parser capability to parse 2--3
check echo commands capability to print "--"
check echo commands capability to print upper and lower case
check xpressn.c parser capabilities
check precision of some transcendental functions
rlar