From d6382fffde99214ce4aee99a208ddb703c647008 Mon Sep 17 00:00:00 2001 From: Tom Tromey Date: Tue, 11 Jul 2017 06:40:40 -0600 Subject: [PATCH] Fix two regressions in scalar printing PR gdb/21675 points out a few regressions in scalar printing. One type of regression is due to not carrying over the old handling of floating point printing -- where a format like "/d" causes a floating point number to first be cast to a signed integer. This patch restores this behavior. The other regression is a longstanding bug in print_octal_chars: one of the constants was wrong. This patch fixes the constant and adds static asserts to help catch this sort of error. ChangeLog 2017-08-14 Tom Tromey PR gdb/21675 * valprint.c (LOW_ZERO): Change value to 034. (print_octal_chars): Add static_asserts for octal constants. * printcmd.c (print_scalar_formatted): Add 'd' case. testsuite/ChangeLog 2017-08-14 Tom Tromey PR gdb/21675: * gdb.base/printcmds.exp (test_radices): New function. * gdb.dwarf2/var-access.exp: Use p/u, not p/d. * gdb.base/sizeof.exp (check_valueof): Use p/d. * lib/gdb.exp (get_integer_valueof): Use p/d. --- gdb/ChangeLog | 7 +++++++ gdb/printcmd.c | 8 ++++++-- gdb/testsuite/ChangeLog | 8 ++++++++ gdb/testsuite/gdb.base/printcmds.exp | 11 +++++++++++ gdb/testsuite/gdb.base/sizeof.exp | 2 +- gdb/testsuite/gdb.dwarf2/var-access.exp | 8 ++++---- gdb/valprint.c | 8 +++++++- 7 files changed, 44 insertions(+), 8 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index dcb591d..fd0f959 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,10 @@ +2017-08-14 Tom Tromey + + PR gdb/21675 + * valprint.c (LOW_ZERO): Change value to 034. + (print_octal_chars): Add static_asserts for octal constants. + * printcmd.c (print_scalar_formatted): Add 'd' case. + 2017-08-11 Tom Tromey * symfile.c (add_symbol_file_command): Use std::vector. diff --git a/gdb/printcmd.c b/gdb/printcmd.c index d5c83f0..a1231d4 100644 --- a/gdb/printcmd.c +++ b/gdb/printcmd.c @@ -413,7 +413,9 @@ print_scalar_formatted (const gdb_byte *valaddr, struct type *type, && (options->format == 'o' || options->format == 'x' || options->format == 't' - || options->format == 'z')) + || options->format == 'z' + || options->format == 'd' + || options->format == 'u')) { LONGEST val_long = unpack_long (type, valaddr); converted_float_bytes.resize (TYPE_LENGTH (type)); @@ -427,11 +429,13 @@ print_scalar_formatted (const gdb_byte *valaddr, struct type *type, case 'o': print_octal_chars (stream, valaddr, len, byte_order); break; + case 'd': + print_decimal_chars (stream, valaddr, len, true, byte_order); + break; case 'u': print_decimal_chars (stream, valaddr, len, false, byte_order); break; case 0: - case 'd': if (TYPE_CODE (type) != TYPE_CODE_FLT) { print_decimal_chars (stream, valaddr, len, !TYPE_UNSIGNED (type), diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index 23658b0..6db249b 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,11 @@ +2017-08-14 Tom Tromey + + PR gdb/21675: + * gdb.base/printcmds.exp (test_radices): New function. + * gdb.dwarf2/var-access.exp: Use p/u, not p/d. + * gdb.base/sizeof.exp (check_valueof): Use p/d. + * lib/gdb.exp (get_integer_valueof): Use p/d. + 2017-08-12 Simon Marchi * lib/gdb.exp (get_valueof): Don't capture end-of-line diff --git a/gdb/testsuite/gdb.base/printcmds.exp b/gdb/testsuite/gdb.base/printcmds.exp index 323ca73..9409c6a 100644 --- a/gdb/testsuite/gdb.base/printcmds.exp +++ b/gdb/testsuite/gdb.base/printcmds.exp @@ -155,6 +155,16 @@ proc test_float_rejected {} { test_print_reject "p 1.1ll" } +# Regression test for PR gdb/21675 +proc test_radices {} { + gdb_test "print/o 16777211" " = 077777773" + gdb_test "print/d 1.5" " = 1" + gdb_test "print/u 1.5" " = 1" + + gdb_test "print/u (char) -1" " = 255" + gdb_test "print/d (unsigned char) -1" " = -1" +} + proc test_print_all_chars {} { global gdb_prompt @@ -981,3 +991,4 @@ test_printf test_printf_with_dfp test_print_symbol test_repeat_bytes +test_radices diff --git a/gdb/testsuite/gdb.base/sizeof.exp b/gdb/testsuite/gdb.base/sizeof.exp index d7ada65..5d89407 100644 --- a/gdb/testsuite/gdb.base/sizeof.exp +++ b/gdb/testsuite/gdb.base/sizeof.exp @@ -81,7 +81,7 @@ check_sizeof "long double" ${sizeof_long_double} proc check_valueof { exp val } { gdb_test "next" "" "" - gdb_test "p value" " = ${val}" "check valueof \"$exp\"" + gdb_test "p /d value" " = ${val}" "check valueof \"$exp\"" } # Check that GDB and the target agree over the sign of a character. diff --git a/gdb/testsuite/gdb.dwarf2/var-access.exp b/gdb/testsuite/gdb.dwarf2/var-access.exp index 8ebad6a..9180c88 100644 --- a/gdb/testsuite/gdb.dwarf2/var-access.exp +++ b/gdb/testsuite/gdb.dwarf2/var-access.exp @@ -282,16 +282,16 @@ gdb_test_no_output "set var \$[lindex $regname 0] = 81" \ "init reg for s2.a" gdb_test_no_output "set var \$[lindex $regname 1] = 28" \ "init reg for s2.c" -gdb_test "print/d s2" " = \\{a = 81, b = 4, c = 28, d = 5\\}" \ +gdb_test "print/u s2" " = \\{a = 81, b = 4, c = 28, d = 5\\}" \ "initialized s2 from mem and regs" gdb_test_no_output "set var s2.c += s2.a + s2.b - s2.d" -gdb_test "print/d s2" " = \\{a = 81, b = 4, c = 108, d = 5\\}" \ +gdb_test "print/u s2" " = \\{a = 81, b = 4, c = 108, d = 5\\}" \ "verify s2.c" -gdb_test "print/d \$[lindex $regname 1]" " = 108" \ +gdb_test "print/u \$[lindex $regname 1]" " = 108" \ "verify s2.c through reg" gdb_test_no_output "set var s2 = {191, 73, 231, 123}" \ "re-initialize s2" -gdb_test "print/d s2" " = \\{a = 191, b = 73, c = 231, d = 123\\}" \ +gdb_test "print/u s2" " = \\{a = 191, b = 73, c = 231, d = 123\\}" \ "verify re-initialized s2" # Unaligned bitfield access through byte-aligned pieces. diff --git a/gdb/valprint.c b/gdb/valprint.c index 1667882..9e216cf 100644 --- a/gdb/valprint.c +++ b/gdb/valprint.c @@ -1593,15 +1593,21 @@ print_octal_chars (struct ui_file *stream, const gdb_byte *valaddr, */ #define BITS_IN_OCTAL 3 #define HIGH_ZERO 0340 -#define LOW_ZERO 0016 +#define LOW_ZERO 0034 #define CARRY_ZERO 0003 + static_assert (HIGH_ZERO + LOW_ZERO + CARRY_ZERO == 0xff, + "cycle zero constants are wrong"); #define HIGH_ONE 0200 #define MID_ONE 0160 #define LOW_ONE 0016 #define CARRY_ONE 0001 + static_assert (HIGH_ONE + MID_ONE + LOW_ONE + CARRY_ONE == 0xff, + "cycle one constants are wrong"); #define HIGH_TWO 0300 #define MID_TWO 0070 #define LOW_TWO 0007 + static_assert (HIGH_TWO + MID_TWO + LOW_TWO == 0xff, + "cycle two constants are wrong"); /* For 32 we start in cycle 2, with two bits and one bit carry; for 64 in cycle in cycle 1, with one bit and a two bit carry. */ -- 2.7.4