Later - Jay
## Pth specific (basically everything :()
{
libpth-Addr4-internal
Memcheck:Addr4
obj:/opt/gcc3/lib/libpth.so.20.0.20
}
{
libpth-Value4-internal
Memcheck:Value4
obj:/opt/gcc3/lib/libpth.so.20.0.20
}
{
libpth-Cond-internal
Memcheck:Cond
obj:/opt/gcc3/lib/libpth.so.20.0.20
}
## Pth system call related
{
swapcontext-Value4
Memcheck:Value4
fun:swapcontext
}
{
swapcontext-Addr4
Memcheck:Addr4
fun:swapcontext
}
{
swapcontext-Cond
Memcheck:Cond
fun:swapcontext
}
{
sigismember-Value4
Memcheck:Value4
fun:sigismember
}
{
sigismember-Addr4
Memcheck:Addr4
fun:sigismember
}
{
sigismember-Cond
Memcheck:Cond
fun:sigismember
}
Ralf S. Engelschall wrote:
On Tue, Aug 10, 2004, Robert Anderson wrote:[...] This program compiles and runs with the expected behavior. However, valgrind (http://valgrind.kde.org/) complains about numerous memory access errors. I am not certain if these are real or false positives.Here's an example. After calling the first pth_yield(t), it complains about invalid memory reads: ==2775== Invalid read of size 4 ==2775== at 0x3C153BA1: swapcontext (in /lib/tls/libc-2.3.2.so) ==2775== Address 0x3C25E314 is 256 bytes inside a block of size 760 alloc'd ==2775== at 0x3C01E338: malloc (vg_replace_malloc.c:105) ==2775== by 0x3C0267B9: __pth_tcb_alloc (in /g/g10/rwa/redhat-packages/pth-1.4.1/lib/libpth.so.14.0.21) ==2775== by 0x3C02993A: pth_spawn (in /g/g10/rwa/redhat-packages/pth-1.4.1/lib/libpth.so.14.0.21) ==2775== by 0x8049985: main (minimal.C:20) Is there an error in my program? Or does this look like some kind of false positive?Well, GNU Pth here seems to just call malloc(3) here and internally this fails, right? I think there is either a bug in GNU glibc 2.3.2 or valgrind is false here. Ralf S. Engelschall [EMAIL PROTECTED] www.engelschall.com ______________________________________________________________________ GNU Portable Threads (Pth) http://www.gnu.org/software/pth/ Development Site http://www.ossp.org/pkg/lib/pth/ Distribution Files ftp://ftp.gnu.org/gnu/pth/ Distribution Snapshots ftp://ftp.ossp.org/pkg/lib/pth/ User Support Mailing List [EMAIL PROTECTED] Automated List Manager (Majordomo) [EMAIL PROTECTED]
