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Cast char constant to int in sizeof.exp

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PR gdb/22010 concerns a regression I introduced with the scalar
printing changes.  The bug is that this code in sizeof.exp:

    set signof_byte [get_integer_valueof "'\\377'" -1]

can incorrectly compute sizeof_byte.  One underlying problem here is
that gdb's C parser doesn't treat a char constant as an int (this is
PR 19973).

However, it seems good to have an immediate fix for the regression.
The simplest is to cast to an int here.

testsuite/ChangeLog
2017-09-05  Tom Tromey  <tom@tromey.com>

	PR gdb/22010:
	* gdb.base/sizeof.exp (check_valueof): Cast char constant to int.
This commit is contained in:
Tom Tromey 2017-08-30 16:12:56 -06:00
parent a102602bc5
commit 5aec60eb2f
2 changed files with 6 additions and 1 deletions
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5
gdb/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2017-09-05 Tom Tromey <tom@tromey.com>
PR gdb/22010:
* gdb.base/sizeof.exp (check_valueof): Cast char constant to int.
2017-09-06 Thomas Preud'homme <thomas.preudhomme@arm.com>
* gdb.arch/thumb2-it.exp: Cast call to assembly defined function.

2
gdb/testsuite/gdb.base/sizeof.exp
View File

@ -86,7 +86,7 @@ proc check_valueof { exp val } {
# Check that GDB and the target agree over the sign of a character.
set signof_byte [get_integer_valueof "'\\377'" -1]
set signof_byte [get_integer_valueof "(int) '\\377'" -1]
set signof_char [get_integer_valueof "(int) (char) -1" -1]
set signof_signed_char [get_integer_valueof "(int) (signed char) -1" -1]
set signof_unsigned_char [get_integer_valueof "(int) (unsigned char) -1" -1]