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From 2002-01-18 Greg McGary <greg@mcgary.org>:

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* (create_mem_region): Disallow useless empty region.  Regions are
half-open intervals, so allow [A..B) [B..C) as non-overlapping.
This commit is contained in:
Andrew Cagney
2002-02-13 19:00:47 +00:00
parent 6c6ea35e34
commit b6d1a1d526
2 changed files with 11 additions and 4 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
2002-02-13 Andrew Cagney <ac131313@redhat.com>
From 2002-01-18 Greg McGary <greg@mcgary.org>:
* (create_mem_region): Disallow useless empty region. Regions are
half-open intervals, so allow [A..B) [B..C) as non-overlapping.
2002-02-13 Michael Chastain <mec@shout.net> 2002-02-13 Michael Chastain <mec@shout.net>
* defs.h: Kill CONST_PTR. * defs.h: Kill CONST_PTR.

9
gdb/memattr.c
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@ -45,9 +45,10 @@ create_mem_region (CORE_ADDR lo, CORE_ADDR hi,
{ {
struct mem_region *n, *new; struct mem_region *n, *new;
if (lo > hi) /* lo == hi is a useless empty region */
if (lo >= hi)
{ {
printf_unfiltered ("invalid memory region\n"); printf_unfiltered ("invalid memory region: low >= high\n");
return NULL; return NULL;
} }
@ -55,8 +56,8 @@ create_mem_region (CORE_ADDR lo, CORE_ADDR hi,
while (n) while (n)
{ {
/* overlapping node */ /* overlapping node */
if ((lo >= n->lo && lo <= n->hi) || if ((lo >= n->lo && lo < n->hi) ||
(hi >= n->lo && hi <= n->hi)) (hi > n->lo && hi <= n->hi))
{ {
printf_unfiltered ("overlapping memory region\n"); printf_unfiltered ("overlapping memory region\n");
return NULL; return NULL;