Fix compatibility with musl libc 1.2.4 (#189)

Author: jbachorik

.github/workflows/test_workflow.yml

@@ -120,7 +120,7 @@ jobs:
         config: ${{ fromJson(inputs.configuration) }}
     runs-on: ubuntu-latest
     container:
-      image: "alpine:3.14"
+      image: "alpine:3.21"
       options: --cpus 4 --workdir /github/workspace -v /home/runner/work/_temp:/home/runner/work/_temp
     timeout-minutes: 180
     steps:

ddprof-lib/src/main/cpp/symbols_linux.cpp

@@ -24,6 +24,9 @@
 #include <sys/mman.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+
+// make sure lseek will use 64 bits offset
+#define _FILE_OFFSET_BITS 64
 #include <unistd.h>
 
 ElfSection *ElfParser::findSection(uint32_t type, const char *name) {
@@ -68,7 +71,7 @@ bool ElfParser::parseFile(CodeCache *cc, const char *base,
     return false;
   }
 
-  size_t length = (size_t)lseek64(fd, 0, SEEK_END);
+  size_t length = (size_t)lseek(fd, 0, SEEK_END);
   void *addr = mmap(NULL, length, PROT_READ, MAP_PRIVATE, fd, 0);
   close(fd);