Pointer being freed was not allocated

General Usage
8

Thank you all for your answers.

Hopefully, I won’t have to change the C-library. As suggested, a solution might be to do all allocations on C-side.

@ihnorton Here is a copy from these examples which generates the malloc issue.

using LSODA

function rhs!(t, x, ydot, data)
	ydot[1]=1.0E4 * x[2] * x[3] - .04E0 * x[1]
	ydot[3]=3.0E7 * x[2] * x[2]
	ydot[2]=-ydot[1] - ydot[3]
  nothing
end

rhs!(t, x, ydot) =  rhs!(t, x, ydot, nothing)

y0 = [1.,0.,0.]
# case with a vector
println("\n####################################\n--> Use of a vector of times where output is required")
tspan = [4.*10.0^k for k=-1:10]
ctx, res = @time LSODA.lsoda(rhs!, y0, tspan, reltol= 1e-4,abstol = Vector([1.e-6,1.e-10,1.e-6]))
lsoda_free(ctx)

returns

unhandled error message: 
julia(21398,0x7fff7860e000) malloc: *** error for object 0x110698dd0: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug

signal (6): Abort trap: 6
while loading /Users/rveltz/Downloads/crash-lsoda.jl, in expression starting on line 18
__pthread_kill at /usr/lib/system/libsystem_kernel.dylib (unknown line)
Allocations: 2748719 (Pool: 2747721; Big: 998); GC: 2

where L18 refers to lsoda_free(ctx) so somehow my function lsoda_free is buggy.