outelf32/64: fix uninitialized rbtree

Fix crash caused by uninitialised memory that lead to dangling pointer
in the rbtree. This can be seen by compiling zsnes 1.50, with a file
that define many symbols, such as fxemu2c.asm.

diff --git a/output/outelf32.c b/output/outelf32.c
index 604c353..9edce37 100644 (file)
--- a/output/outelf32.c
+++ b/output/outelf32.c
@@ -602,6 +602,8 @@ static void elf_deflabel(char *name, int32_t segment, int64_t offset,
 
     lastsym = sym = saa_wstruct(syms);
 
+    memset(&sym->symv, 0, sizeof(struct rbtree));
+
     sym->strpos = pos;
     sym->type = is_global ? SYM_GLOBAL : 0;
     sym->other = STV_DEFAULT;

diff --git a/output/outelf64.c b/output/outelf64.c
index 24d0b81..484c4ba 100644 (file)
--- a/output/outelf64.c
+++ b/output/outelf64.c
@@ -638,6 +638,8 @@ static void elf_deflabel(char *name, int32_t segment, int64_t offset,
 
     lastsym = sym = saa_wstruct(syms);
 
+    memset(&sym->symv, 0, sizeof(struct rbtree));
+
     sym->strpos = pos;
     sym->type = is_global ? SYM_GLOBAL : 0;
     sym->other = STV_DEFAULT;