Andrew Burgess 5fdf6324fa gdb: New set/show max-value-size command. ... For languages with dynamic types, an incorrect program, or uninitialised variables within a program, could result in an incorrect, overly large type being associated with a value. Currently, attempting to print such a variable will result in gdb trying to allocate an overly large buffer. If this large memory allocation fails then the result can be gdb either terminating, or (due to memory contention) becoming unresponsive for the user. A new user visible variable in gdb helps guard against such problems, two new commands are available: set max-value-size show max-value-size The 'max-value-size' is the maximum size of memory in bytes that gdb will allocate for the contents of a value. Any attempt to allocate a value with a size greater than this will result in an error. The initial default for this limit is set at 64k, this is based on a similar limit that exists within the ada specific code. It is possible for the user to set max-value-size to unlimited, in which case the old behaviour is restored. gdb/ChangeLog: * value.c (max_value_size): New variable. (MIN_VALUE_FOR_MAX_VALUE_SIZE): New define. (show_max_value_size): New function. (check_type_length_before_alloc): New function. (allocate_value_contents): Call check_type_length_before_alloc. (set_value_enclosing_type): Likewise. (_initialize_values): Add set/show handler for max-value-size. * NEWS: Mention new set/show command. gdb/doc/ChangeLog: * gdb.texinfo (Value Sizes): New section. (Data): Add the 'Value Sizes' node to the menu. gdb/testsuite/ChangeLog: * gdb.base/max-value-size.c: New file. * gdb.base/max-value-size.exp: New file. * gdb.base/huge.exp: Disable max-value-size for this test.		2016-02-01 18:05:35 +00:00
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a4rc.sed
agentexpr.texi	GDB copyright headers update after running GDB's copyright.py script.	2016-01-01 08:43:22 +04:00
all-cfg.texi	GDB copyright headers update after running GDB's copyright.py script.	2016-01-01 08:43:22 +04:00
annotate.texinfo	GDB copyright headers update after running GDB's copyright.py script.	2016-01-01 08:43:22 +04:00
ChangeLog	gdb: New set/show max-value-size command.	2016-02-01 18:05:35 +00:00
doxy-index.in	GDB copyright headers update after running GDB's copyright.py script.	2016-01-01 08:43:22 +04:00
Doxyfile-base.in	GDB copyright headers update after running GDB's copyright.py script.	2016-01-01 08:43:22 +04:00
Doxyfile-gdb-api.in	GDB copyright headers update after running GDB's copyright.py script.	2016-01-01 08:43:22 +04:00
Doxyfile-gdb-xref.in	GDB copyright headers update after running GDB's copyright.py script.	2016-01-01 08:43:22 +04:00
Doxyfile-gdbserver.in	GDB copyright headers update after running GDB's copyright.py script.	2016-01-01 08:43:22 +04:00
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gdb.texinfo	gdb: New set/show max-value-size command.	2016-02-01 18:05:35 +00:00
gpl.texi
guile.texi	Per-inferior/Inferior-qualified thread IDs	2016-01-13 10:59:43 +00:00
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Makefile.in	GDB copyright headers update after running GDB's copyright.py script.	2016-01-01 08:43:22 +04:00
observer.texi	GDB copyright headers update after running GDB's copyright.py script.	2016-01-01 08:43:22 +04:00
psrc.sed
python.texi	Add Python InferiorThread.global_num attribute	2016-01-13 11:00:54 +00:00
refcard.tex	GDB copyright headers update after running GDB's copyright.py script.	2016-01-01 08:43:22 +04:00
stabs.texinfo	GDB copyright headers update after running GDB's copyright.py script.	2016-01-01 08:43:22 +04:00
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