https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84439
Bug ID: 84439
Summary: call to backtrace fails after about 6000 iterations
(32-bit executable)
Product: gcc
Version: 4.8.5
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libfortran
Assignee: unassigned at gcc dot gnu.org
Reporter: kapfell at gmx dot de
Target Milestone: ---
Created attachment 43448
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43448&action=edit
Test calling backtrace() repeatedly, fails after about 5600 iteration (32-bit
executable)
There appears to be a memory leak in backtrace(). At about 5500 iterations mmap
complains about insufficient memory and stack trace no longer shows function
names:
[...]
#0 0xf7667245 in ???
#1 0xf7667289 in ???
#2 0x804874b in fun5_
at [...]/gf_backtrace.f:44
#3 0x80486c6 in fun4_
at [...]/gf_backtrace.f:37
#4 0x80486b3 in fun3_
at [...]/gf_backtrace.f:31
#5 0x80486a0 in fun2_
at [...]/gf_backtrace.f:25
#6 0x804868d in fun1_
at [...]/gf_backtrace.f:19
#7 0x804877b in testbacktrace
at [...]/gf_backtrace.f:12
#8 0x80487ce in main
at [...]/gf_backtrace.f:14
5696 calls to backtrace()
Could not print backtrace: mmap: Cannot allocate memory
#0 0xf7633273
#1 0xf7633289
#2 0x80487bd
#3 0x804871a
#4 0x80486f2
#5 0x80486ca
#6 0x80486a2
#7 0x8048802
#8 0x8048855
#9 0xf73c0672
#10 0x80485a0
[fun5 ( 46)] 5697 calls to backtrace()
[...]
System: OpenSUSE 42.3, x86_64, kernel 4.4.114. Test program is attached,
compile with :
gfortran -m32 -o bug-report-backtrace -g -Wall -Wextra -std=gnu
bug-report-backtrace.f
Thanks
