Hi Andrew,
Yes, I did a bit. it segfaults at
cgraphunit.c:cgraph_expand_all_functions:1323
node->lowered = DECL_STRUCT_FUNCTION (node->decl)->cfg != NULL;
It seems that the node->decl has been nulled by the time it gets
here. It definitely isn't NULL after leaving my code.
Can you think of anything that might do that? I figured I must be
doing something pretty wrong and that there must be tons of examples
for this kind of thing but I haven't been able to find one.
Cheers for the help,
Hugh.
Andrew Haley wrote:
Hugh Leather wrote:
Hi,
I am trying to add a new destructor function to object files I
compile. I'm doing this to instrument programs and then, once the
program has finished I want to print out the statistics I've gathered.
So, just before pass 'remove_useless_stmts' is called on each function
I try to create a static destructor which will print stats for the
current function (and obviously, I don't do it on the functions just
created).
Below I've put a simpler form, which should work for a one function
program. Calling createFnDecl() creates a new function called
__my_new_function. It should print "It worked!" when the program exits.
Now, with compiler flag -O0, this works just fine, but with -O1 or
above it seg faults the compiler.
Can anyone tell me what I'm doing wrong?
Nothing obvious to me. Did you debug the point at which the
segfault happened?
Andrew.
