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[Sanitizer] Don't die in symbolizer if it can't read /proc/self/exe link 

llvm-svn: 179754
This commit is contained in:
Alexey Samsonov 2013-04-18 12:46:33 +00:00
parent 06022fc91a
commit d1efa5ef96
1 changed files with 6 additions and 1 deletions
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7
compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_linux.cc
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@ -148,7 +148,12 @@ static int dl_iterate_phdr_cb(dl_phdr_info *info, size_t size, void *arg) {
// First module is the binary itself.
uptr module_name_len = internal_readlink(
"/proc/self/exe", module_name.data(), module_name.size());
CHECK_NE(module_name_len, (uptr)-1);
if (module_name_len == (uptr)-1) {
// We can't read /proc/self/exe for some reason, assume the name of the
// binary is unknown.
module_name_len = internal_snprintf(module_name.data(),
module_name.size(), "/proc/self/exe");
}
CHECK_LT(module_name_len, module_name.size());
module_name[module_name_len] = '\0';
} else if (info->dlpi_name) {