From: Simon Marchi Date: Fri, 20 Nov 2020 16:17:33 +0000 (-0500) Subject: gdb: fix unittests/gmp-utils-selftests.c build on solaris X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c0ad05d567796104f55d388b5d5b21da8fa47de2;p=binutils-gdb.git gdb: fix unittests/gmp-utils-selftests.c build on solaris When building on solaris (gcc farm machine gcc211), I get: CXX unittests/gmp-utils-selftests.o /export/home/simark/src/binutils-gdb/gdb/unittests/gmp-utils-selftests.c: In function 'void selftests::gdb_mpz_read_all_from_small()' : /export/home/simark/src/binutils-gdb/gdb/unittests/gmp-utils-selftests.c:128:43: error: call of overloaded 'pow(int, int)' is ambiguous LONGEST l_min = -pow (2, buf_len * 8 - 1); ^ In file included from /opt/csw/lib/gcc/sparc-sun-solaris2.10/5.5.0/include-fixed/math.h:22:0, from ../gnulib/import/math.h:27, from /export/home/simark/src/binutils-gdb/gdb/unittests/gmp-utils-selftests.c:23: /opt/csw/lib/gcc/sparc-sun-solaris2.10/5.5.0/include-fixed/iso/math_iso.h:210:21: note: candidate: long double std::pow(long double, long double) inline long double pow(long double __X, long double __Y) { return ^ /opt/csw/lib/gcc/sparc-sun-solaris2.10/5.5.0/include-fixed/iso/math_iso.h:170:15: note: candidate: float std::pow(float, float) inline float pow(float __X, float __Y) { return __powf(__X, __Y); } ^ /opt/csw/lib/gcc/sparc-sun-solaris2.10/5.5.0/include-fixed/iso/math_iso.h:71:15: note: candidate: double std::pow(double, double) extern double pow __P((double, double)); ^ The "pow" function overloads only exist for float-like types, and the compiler doesn't know which one we want. Change "2" for "2.0", which makes the compiler choose one alternative (the double one, I believe). gdb/ChangeLog: * unittests/gmp-utils-selftests.c (gdb_mpz_read_all_from_small): Pass 2.0 to pow. (gdb_mpz_write_all_from_small): Likewise. Change-Id: Ied2ae0f01494430244a7c94f8a38b07d819f4213 --- diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 91068603e7c..4663f562179 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,9 @@ +2020-11-20 Simon Marchi + + * unittests/gmp-utils-selftests.c (gdb_mpz_read_all_from_small): + Pass 2.0 to pow. + (gdb_mpz_write_all_from_small): Likewise. + 2020-11-20 Simon Marchi * dwarf2/read.c (finish_fixed_point_type): Use std::abs instead diff --git a/gdb/unittests/gmp-utils-selftests.c b/gdb/unittests/gmp-utils-selftests.c index e8c3c5c1cb5..af5bc65d2f9 100644 --- a/gdb/unittests/gmp-utils-selftests.c +++ b/gdb/unittests/gmp-utils-selftests.c @@ -125,8 +125,8 @@ gdb_mpz_read_all_from_small () to check the complete range. */ int buf_len = 1; - LONGEST l_min = -pow (2, buf_len * 8 - 1); - LONGEST l_max = pow (2, buf_len * 8 - 1) - 1; + LONGEST l_min = -pow (2.0, buf_len * 8 - 1); + LONGEST l_max = pow (2.0, buf_len * 8 - 1) - 1; for (LONGEST l = l_min; l <= l_max; l++) { @@ -141,7 +141,7 @@ gdb_mpz_read_all_from_small () /* Do the same as above, but with an unsigned type. */ ULONGEST ul_min = 0; - ULONGEST ul_max = pow (2, buf_len * 8) - 1; + ULONGEST ul_max = pow (2.0, buf_len * 8) - 1; for (ULONGEST ul = ul_min; ul <= ul_max; ul++) { @@ -248,8 +248,8 @@ static void gdb_mpz_write_all_from_small () { int buf_len = 1; - LONGEST l_min = -pow (2, buf_len * 8 - 1); - LONGEST l_max = pow (2, buf_len * 8 - 1) - 1; + LONGEST l_min = -pow (2.0, buf_len * 8 - 1); + LONGEST l_max = pow (2.0, buf_len * 8 - 1) - 1; for (LONGEST l = l_min; l <= l_max; l++) { @@ -259,7 +259,7 @@ gdb_mpz_write_all_from_small () /* Do the same as above, but with an unsigned type. */ ULONGEST ul_min = 0; - ULONGEST ul_max = pow (2, buf_len * 8) - 1; + ULONGEST ul_max = pow (2.0, buf_len * 8) - 1; for (ULONGEST ul = ul_min; ul <= ul_max; ul++) {