buildtools: fix invalid symbols

In scenarios where a higher clang compiler is used and ASAN is enabled,
the generated ELF file will additionally insert undefined debug symbols
with the same prefix. This causes duplicate C code to be generated.

This patch fixes this issue by skipping the unspecified symbol type.

Fixes: 6c4bf8f ("buildtools: add Python pmdinfogen")
Cc: stable@dpdk.org

Signed-off-by: Mingjin Ye <mingjinx.ye@intel.com>
Signed-off-by: 0-day Robot <robot@bytheb.org>

buildtools/pmdinfogen.py

@@ -70,6 +70,9 @@ def find_by_prefix(self, prefix):
         prefix = prefix.encode("utf-8") if self._legacy_elftools else prefix
         for i in range(self._symtab.num_symbols()):
             symbol = self._symtab.get_symbol(i)
+            # Skip unspecified symbol type
+            if symbol.entry.st_info['type'] == "STT_NOTYPE":
+                continue
             if symbol.name.startswith(prefix):
                 yield ELFSymbol(self._image, symbol)