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-rw-r--r--gdb/symtab.h8
1 files changed, 6 insertions, 2 deletions
diff --git a/gdb/symtab.h b/gdb/symtab.h
index f59e7a3..ec1b058 100644
--- a/gdb/symtab.h
+++ b/gdb/symtab.h
@@ -407,11 +407,15 @@ struct block
/* Macro to loop through all symbols in a block BL.
i counts which symbol we are looking at, and sym points to the current
- symbol. */
+ symbol.
+ The contortion at the end is to avoid reading past the last valid
+ BLOCK_SYM. */
#define ALL_BLOCK_SYMBOLS(bl, i, sym) \
for ((i) = 0, (sym) = BLOCK_SYM ((bl), (i)); \
(i) < BLOCK_NSYMS ((bl)); \
- ++(i), (sym) = BLOCK_SYM ((bl), (i)))
+ ++(i), (sym) = ((i) < BLOCK_NSYMS ((bl))) \
+ ? BLOCK_SYM ((bl), (i)) \
+ : NULL)
/* Nonzero if symbols of block BL should be sorted alphabetically.
Don't sort a block which corresponds to a function. If we did the