Page fault with isspace(*p)

John K. Hohm jhohm at
Fri Nov 22 22:19:44 CST 2002

I am rewriting the regsvr stuff in dlls/comcat to make it practical to
extend to ole32 and all the other COM DLLs.  I have a nice simple function
to skip whitespace and return the next character:

static int getc_skipws(char const **p)
    while (isspace(*p))
    return **p;

This gets called with **p == '['.  I get a page fault in the
implementation of isspace(), where the macro is testing 0x20 against the
value for '[' in the __ctype_b array.  What gives?

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