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fix up a couple of realloc comments

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PatR
2022-05-31 06:10:22 -07:00
parent 7d186332ae
commit af497bfb25
1 changed files with 8 additions and 6 deletions
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14
src/alloc.c
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@@ -62,18 +62,18 @@ alloc(unsigned int lth)
#endif
}
/* realloc() call that might get substituted by nhrealloc(p,l,file,line) */
/* realloc() call that might get substituted by nhrealloc(p,n,file,line) */
long *
re_alloc(long *oldptr, unsigned int newlth)
{
/*
* if LINT support ever gets resurrected,
* we probably need some hackery here
* If LINT support ever gets resurrected,
* we'll probably need some hackery here.
*/
long *newptr = (long *) realloc((genericptr_t) oldptr, (size_t) newlth);
#ifndef MONITOR_HEAP
/* "extend": assume if won't ever fail if asked to shrink */
/* "extend to": assume it won't ever fail if asked to shrink */
if (newlth && !newptr)
panic("Memory allocation failure; cannot extend to %u bytes", newlth);
#endif
@@ -172,8 +172,10 @@ nhrealloc(
(void) fprintf(heaplog, "%c%5u %s %4d %s\n", op, newlth,
fmt_ptr((genericptr_t) newptr), line, file);
}
/* potential panic in re_alloc() was deferred til here */
/* "extend to": assume if won't ever fail if asked to shrink */
/* potential panic in re_alloc() was deferred til here;
"extend to": assume it won't ever fail if asked to shrink;
even if that assumption happens to be wrong, we lack access to
the old size so can't use alternate phrasing for that case */
if (newlth && !newptr)
panic("Cannot extend to %u bytes, line %d of %s", newlth, line, file);