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[gdb/testsuite] Fix gdb.python/py-inferior.exp with -fsanitize=thread

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With a gdb build with -fsanitize=thread, and test-case
gdb.python/py-inferior.exp I run into:
...
(gdb) python gdb.selected_inferior().read_memory (0, 0xffffffffffffffff)^M
ERROR: ThreadSanitizer: requested allocation size 0xffffffffffffffff exceeds \
  maximum supported size of 0x10000000000^M
...

There's already a workaround for this using ASAN_OPTIONS, and apparently the
same is needed for TSAN_OPTIONS.

Add the allocator_may_return_null=1 workaround also in TSAN_OPTIONS.

Likewise in gdb.dap/memory.exp.

Tested on x86_64-linux.
This commit is contained in:
Tom de Vries
2024-10-07 10:44:45 +02:00
parent d396fcc9d1
commit 11fe8653a9
2 changed files with 4 additions and 2 deletions
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3
gdb/testsuite/gdb.dap/memory.exp
View File

@@ -25,11 +25,12 @@ if {[build_executable ${testfile}.exp $testfile] == -1} {
return
}
save_vars { env(ASAN_OPTIONS) } {
save_vars { env(ASAN_OPTIONS) env(TSAN_OPTIONS) } {
# The request readMemory with count 18446744073709551615 triggers address
# sanitizer. Suppress the error, leaving us with just this warning:
# WARNING: AddressSanitizer failed to allocate 0xffffffffffffffff bytes
set_sanitizer ASAN_OPTIONS allocator_may_return_null 1
set_sanitizer TSAN_OPTIONS allocator_may_return_null 1
if {[dap_initialize] == ""} {
return

3
gdb/testsuite/gdb.python/py-inferior.exp
View File

@@ -27,12 +27,13 @@ if { [gdb_compile_pthreads ${srcdir}/${subdir}/${srcfile} ${binfile} executable
}
# Start with a fresh gdb.
save_vars { env(ASAN_OPTIONS) } {
save_vars { env(ASAN_OPTIONS) env(TSAN_OPTIONS) } {
# The call to gdb.selected_inferior().read_memory (0, 0xffffffffffffffff)
# triggers address sanitizer. Suppress the error, leaving us with just
# this warning:
# WARNING: AddressSanitizer failed to allocate 0xffffffffffffffff bytes
set_sanitizer ASAN_OPTIONS allocator_may_return_null 1
set_sanitizer TSAN_OPTIONS allocator_may_return_null 1
clean_restart ${testfile}
}