Comment #10 on issue 267 by [email protected]: Segmentation fault with
if_lua (during or after the GC)
https://code.google.com/p/vim/issues/detail?id=267
Try to reproduce the bug after building vim with ASan (= address sanitizer)
using the following patch to src/Makefile. Then run vim normally, ASan will
report useful stacks if a memory bug is detected at runtime (double free,
used of free memory, heap/stack/global overflow) Make sure that you run
vim unstripped which should be the case if you ran src/vim. It assumes that
you compile with a compiler that is not too ancient (>= gcc-4.8 or or >=
clang-3.3 should be fine):
diff -r bfecd68c04dd src/Makefile
--- a/src/Makefile Fri Oct 31 19:51:36 2014 +0100
+++ b/src/Makefile Wed Nov 05 04:15:14 2014 +0100
@@ -616,6 +616,11 @@
#PROFILE_LIBS = -pg
#PROFILE_LIBS = -pg -lc
+# Build with address sanitizer.
+# See: # https://code.google.com/p/address-sanitizer/wiki/AddressSanitizer
+ASAN_CFLAGS = -fsanitize=address -fno-omit-frame-pointer -O1 -g
+ASAN_LIBS = $(ASAN_CFLAGS)
+
# MEMORY LEAK DETECTION
# Requires installing the ccmalloc library.
# Configuration is in the .ccmalloc or ~/.ccmalloc file.
@@ -1342,7 +1347,7 @@
PRE_DEFS = -Iproto $(DEFS) $(GUI_DEFS) $(GUI_IPATH) $(CPPFLAGS)
$(EXTRA_IPATHS)
POST_DEFS = $(X_CFLAGS) $(MZSCHEME_CFLAGS) $(TCL_CFLAGS) $(EXTRA_DEFS)
-ALL_CFLAGS = $(PRE_DEFS) $(CFLAGS) $(PROFILE_CFLAGS) $(LEAK_CFLAGS)
$(POST_DEFS)
+ALL_CFLAGS = $(PRE_DEFS) $(CFLAGS) $(PROFILE_CFLAGS) $(ASAN_CFLAGS)
$(LEAK_CFLAGS) $(POST_DEFS)
# Exclude $CFLAGS for osdef.sh, for Mac 10.4 some flags don't work together
# with "-E".
@@ -1374,6 +1379,7 @@
$(TCL_LIBS) \
$(RUBY_LIBS) \
$(PROFILE_LIBS) \
+ $(ASAN_LIBS) \
$(LEAK_LIBS)
# abbreviations
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