On 30 November 2006 13:26, Eric Lilja wrote:
> The following program stackdumps:
> #include <cmath>
>
> int
> main()
> {
> std::isnan(3);
> }
> If compiled with:
> $ g++ -Wall -Wextra -std=c++98 -pedantic -g isnantest.cpp -o run
> (those are the flags we have been using in this course).
Can't reproduce. I'm a couple of dll versions behind, I'll see what happens
after an update.
> But it doesn't stackdump if compiled simply with:
> $ make isnantest
> g++ isnantest.cpp -o isnantest
This, I can reproduce!
> Comments? cygcheck.out attached.
#1. Might be informative to use addr2line to figure out exactly where the
thing is crashing: in the dll, or in your executable.
#2. Re-compile both the crashing and non-crashing versions, using the
--save-temps option, and see if there are any obvious differences in the
assembler source files generated.
cheers,
DaveK
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