fix memory leak of MMacro::name on macro undefining #67
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
When running with -fsanitize=leak enabled nasm prints this error:
ERROR: LeakSanitizer: detected memory leaks
Direct leak of 6 byte(s) in 1 object(s) allocated from:
#0 0x7f17d8a60867 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145
netwide-assembler#1 0x5613fd57401c in nasm_malloc nasmlib/alloc.c:55
netwide-assembler#2 0x5613fd5be840 in dup_text asm/preproc.c:436
netwide-assembler#3 0x5613fd5dc71d in parse_mmacro_spec asm/preproc.c:3325
netwide-assembler#4 0x5613fd5e5f7a in do_directive asm/preproc.c:4615
netwide-assembler#5 0x5613fd5f5e19 in pp_tokline asm/preproc.c:7766
netwide-assembler#6 0x5613fd5f5e19 in pp_getline asm/preproc.c:7830
netwide-assembler#7 0x5613fd56e678 in assemble_file asm/nasm.c:1722
netwide-assembler#8 0x5613fd568801 in main asm/nasm.c:719
netwide-assembler#9 0x7f17d8178d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
netwide-assembler#10 0x7f17d8178e3f in __libc_start_main_impl ../csu/libc-start.c:392
netwide-assembler#11 0x5613fd56acd4 in _start (/home/ivan/d/nasm/nasm+0x2e5cd4)
SUMMARY: AddressSanitizer: 6 byte(s) leaked in 1 allocation(s).
This error was reproducible on align13s.asm test.
The problem was caused by the fact that do_directive didn't
cleaup properly the macro name returned from parse_mmacro_spec.
Signed-off-by: Ivan Sorokin <[email protected]>
sorokin
force-pushed
the
fix-memory-leak-of-mmacro-name-in-undef
branch
from
49030a2 to
ad74ce7
Compare
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
When running with
-fsanitize=leakenabled nasm prints this error:This error was reproducible on
align13s.asmtest.The problem was caused by the fact that
do_directivedidn't cleaup properly the macro name returned fromparse_mmacro_spec.