https://sourceware.org/bugzilla/show_bug.cgi?id=23165
Bug ID: 23165
Summary: Several Memory Leaks in chew of binutils
Product: binutils
Version: 2.31 (HEAD)
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: mudongliangabcd at gmail dot com
Target Milestone: ---
I found several memory leaks with Address Sanitizer or Valgrind.
Reproduction method:
```
git clone git://sourceware.org/git/binutils-gdb.git
mkdir obj_clang
CC=clang CFLAGS="-g -fsanitize=address" LDFLAGS="-fsanitize=address"
../configure
make
cd bfd/doc/
./chew -f < ../../../bfd/aoutx.h
or
mkdir obj_native
../configure
make
cd bfd/doc/
valgrind --leak-check=full --show-leak-kinds=all ./chew -f <
../../../bfd/aoutx.h
```
Result of Address Sanitizer:
```
$ ./chew -f < ../../../bfd/aoutx.h
Can't open the input file (null)
=================================================================
==21926==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 320000 byte(s) in 1 object(s) allocated from:
#0 0x4d1cc5 in realloc
(/home/mdl/Downloads/binutils-gdb/obj_afl/bfd/doc/chew+0x4d1cc5)
#1 0x5137db in catbuf
/home/mdl/Downloads/binutils-gdb/obj_afl/bfd/doc/../../../bfd/doc/chew.c:231:30
#2 0x5128c9 in read_in
/home/mdl/Downloads/binutils-gdb/obj_afl/bfd/doc/../../../bfd/doc/chew.c:1505:7
#3 0x50db66 in main
/home/mdl/Downloads/binutils-gdb/obj_afl/bfd/doc/../../../bfd/doc/chew.c:1582:3
#4 0x7f573d8f1a86 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x21a86)
Direct leak of 20000 byte(s) in 1 object(s) allocated from:
#0 0x4d1cc5 in realloc
(/home/mdl/Downloads/binutils-gdb/obj_afl/bfd/doc/chew+0x4d1cc5)
#1 0x51267f in catchar
/home/mdl/Downloads/binutils-gdb/obj_afl/bfd/doc/../../../bfd/doc/chew.c:204:30
#2 0x512b55 in remove_noncomments
/home/mdl/Downloads/binutils-gdb/obj_afl/bfd/doc/../../../bfd/doc/chew.c:479:5
#3 0x50dba4 in main
/home/mdl/Downloads/binutils-gdb/obj_afl/bfd/doc/../../../bfd/doc/chew.c:1583:3
#4 0x7f573d8f1a86 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x21a86)
Direct leak of 5000 byte(s) in 1 object(s) allocated from:
#0 0x4d18a0 in malloc
(/home/mdl/Downloads/binutils-gdb/obj_afl/bfd/doc/chew+0x4d18a0)
#1 0x513ac9 in init_string_with_size
/home/mdl/Downloads/binutils-gdb/obj_afl/bfd/doc/../../../bfd/doc/chew.c:131:26
#2 0x50e269 in init_string
/home/mdl/Downloads/binutils-gdb/obj_afl/bfd/doc/../../../bfd/doc/chew.c:138:3
#3 0x50dcfd in main
/home/mdl/Downloads/binutils-gdb/obj_afl/bfd/doc/../../../bfd/doc/chew.c:1592:8
#4 0x7f573d8f1a86 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x21a86)
SUMMARY: AddressSanitizer: 345000 byte(s) leaked in 3 allocation(s).
```
Result of Valgrind:
```
https://gist.github.com/mudongliang/03c97f7c39c19c6013c3bd5a549a2282
```
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