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| author | Chris Liddell <chris.liddell@artifex.com> | 2016-10-16 11:30:36 +0100 |
|---|---|---|
| committer | Chris Liddell <chris.liddell@artifex.com> | 2016-10-16 13:12:26 +0100 |
| commit | a7a8b148c368d313f913c23a754e14394d6fb5a1 (patch) | |
| tree | 90c50d87e2070650befb326094f95ed480e52385 | |
| parent | 86ea41068f8ee8930aa169ad3a106db4f7d6c7db (diff) | |
| download | ghostpdl-a7a8b148c368d313f913c23a754e14394d6fb5a1.tar.gz | |
Bug 697217(3): guard against stack underflow in debug info dump
In the event of an error exit, we dump out the contents of the stacks.
*But* in the event of an error, we can already be into the "guard" entries
below the bottom of the normal operand stack - so protect against that
when dumping out the stack.
| -rw-r--r-- | psi/idebug.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/psi/idebug.c b/psi/idebug.c index dfa81d607..db1c1d1ea 100644 --- a/psi/idebug.c +++ b/psi/idebug.c @@ -257,10 +257,10 @@ void debug_dump_stack(const gs_memory_t *mem, const ref_stack_t * pstack, const char *msg) { - uint i; + int i; const char *m = msg; - for (i = ref_stack_count(pstack); i != 0;) { + for (i = ref_stack_count(pstack); i > 0;) { const ref *p = ref_stack_index(pstack, --i); if (m) { |