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| author |   Christian Biesinger <cbiesinger@google.com> | 2019-11-17 19:13:49 -0600 |
|---|---|---|
| committer | Christian Biesinger <cbiesinger@google.com> | 2019-11-18 11:50:48 -0600 |
| commit | 6edc43ec327c2b74e10b80774fa6ecde3dc58537 (patch) | |
| tree | 04abfa22825a8a2df8aed52d2d302fd5d6a22105 | |
| parent | elf_backend_init_file_header (diff) | |
| download | binutils-gdb-6edc43ec327c2b74e10b80774fa6ecde3dc58537.tar.gz binutils-gdb-6edc43ec327c2b74e10b80774fa6ecde3dc58537.tar.bz2 binutils-gdb-6edc43ec327c2b74e10b80774fa6ecde3dc58537.zip | |
Don't use class-initialization for the owner union
As reported by PhilippeW, valgrind reports that symtab is uninitialized
when compiling with GCC 4.8.5, which is the default compiler on CentOS 7.
This is apparently a compiler bug fixed in later versions, but to keep
CentOS 7 working, this patch initializes the union explicitly instead of
using a class initializer.
gdb/ChangeLog:
2019-11-18 Christian Biesinger <cbiesinger@google.com>
* symtab.h (struct symbol) <owner>: Initialize explicitly in the
constructor instead of using a class initializer.
Change-Id: I94f48afeae5d29cf81a280295e2d02e2d7e1c1f1
| -rw-r--r-- | gdb/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/symtab.h | 5 |
2 files changed, 9 insertions, 1 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 90a2b64d3df..0e17d7c39d8 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,8 @@ +2019-11-18 Christian Biesinger <cbiesinger@google.com> + + * symtab.h (struct symbol) <owner>: Initialize explicitly in the + constructor instead of using a class initializer. + 2019-11-15 Christian Biesinger <cbiesinger@google.com> * Makefile.in: Replace {posix,mingw}-strerror.c with safe-strerror.c. diff --git a/gdb/symtab.h b/gdb/symtab.h index a6bd3c44b80..1e82182df79 100644 --- a/gdb/symtab.h +++ b/gdb/symtab.h @@ -1113,6 +1113,9 @@ struct symbol : public general_symbol_info, public allocate_on_obstack language = language_unknown; ada_mangled = 0; section = 0; + /* GCC 4.8.5 (on CentOS 7) does not correctly compile class- + initialization of unions, so we initialize it manually here. */ + owner.symtab = nullptr; } /* Data type of value */ @@ -1127,7 +1130,7 @@ struct symbol : public general_symbol_info, public allocate_on_obstack /* The symbol table containing this symbol. This is the file associated with LINE. It can be NULL during symbols read-in but it is never NULL during normal operation. */ - struct symtab *symtab = nullptr; + struct symtab *symtab; /* For types defined by the architecture. */ struct gdbarch *arch; |