I admit that I am rusty and did not look at any dump for decades, and when I did I was coding either Assembler or COBOL and I knew how to decipher the thing.I am porting a C library libxc to classic z/OS and it compiles cleanly (most of it, at least). As is implied by the description, most users of that thing are running it on Linux or Windows. Maybe a few on Unix machines. I tried to run its modules on my z/OS machine (genuine IBM, z/OS 2.4), and I get S0C4, with nice SYSUDUMP! I have no idea how to begin to look and I am afraid that I compiled it with wrong options. Is there any C maven in the audience that could please try to guide me where to begin looking. I tried to avoid compiling it as dll (that much I sort of knew) but I am not sure any more. Ze'ev Atlas
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