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2011-06-27 Tristan Gingold <gingold@adacore.com>

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* vms-misc.c (vms_time_to_time_t): Adjust overflow detection.
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Tristan Gingold 2011-06-27 08:24:21 +00:00
parent bd82534596
commit 62a35308be
2 changed files with 17 additions and 4 deletions
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5
bfd/ChangeLog
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@ -1,3 +1,8 @@
2011-06-27 Tristan Gingold <gingold@adacore.com>
* vms-misc.c (vms_time_to_time_t): Adjust overflow detection.
Add comment.
2011-06-25 H.J. Lu <hongjiu.lu@intel.com>
* elf64-x86-64.c (elf_backend_post_process_headers): Don't

16
bfd/vms-misc.c
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@ -530,7 +530,10 @@ vms_get_module_name (const char *filename, bfd_boolean upcase)
- 100ns granularity
- epoch is Nov 17, 1858.
Here has the constants and the routines used to convert VMS from/to UNIX time.
The conversion routines don't assume 64 bits arithmetic. */
The conversion routines don't assume 64 bits arithmetic.
Here we assume that the definition of time_t is the UNIX one, ie integer
type, expressing seconds since the epoch. */
/* UNIX time granularity for VMS, ie 1s / 100ns. */
#define VMS_TIME_FACTOR 10000000
@ -546,6 +549,7 @@ vms_time_to_time_t (unsigned int hi, unsigned int lo)
unsigned int tmp;
unsigned int rlo;
int i;
time_t res;
/* First convert to seconds. */
tmp = hi % VMS_TIME_FACTOR;
@ -562,14 +566,18 @@ vms_time_to_time_t (unsigned int hi, unsigned int lo)
lo = rlo;
/* Return 0 in case of overflow. */
if (lo > VMS_TIME_OFFSET && hi > 1)
if (hi > 1
|| (hi == 1 && lo >= VMS_TIME_OFFSET))
return 0;
/* Return 0 in case of underflow. */
if (lo < VMS_TIME_OFFSET)
if (hi == 0 && lo < VMS_TIME_OFFSET)
return 0;
return lo - VMS_TIME_OFFSET;
res = lo - VMS_TIME_OFFSET;
if (res <= 0)
return 0;
return res;
}
/* Convert a time_t to a VMS time. */