From 8aa5bdd61e96a7adeec6dad22847be27faad7122 Mon Sep 17 00:00:00 2001 From: Aaron Conole Date: Thu, 2 Jun 2016 12:22:01 +0000 Subject: On behalf of Aaron Conole On behalf of Aaron Conole * libgcov-driver-system.c (__gcov_error_file): New. (get_gcov_error_file): New. (gcov_error): Use and set __gcov_error_file. (gcov_error_exit): New. * libgcov-driver.c (gcov_exit): Call gcov_error_exit. From-SVN: r237033 --- libgcc/libgcov-driver-system.c | 49 ++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 47 insertions(+), 2 deletions(-) (limited to 'libgcc/libgcov-driver-system.c') diff --git a/libgcc/libgcov-driver-system.c b/libgcc/libgcov-driver-system.c index 4e3b244c7c1..ff8a521690b 100644 --- a/libgcc/libgcov-driver-system.c +++ b/libgcc/libgcov-driver-system.c @@ -23,19 +23,64 @@ a copy of the GCC Runtime Library Exception along with this program; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see . */ -/* A utility function for outputing errors. */ +/* Configured via the GCOV_ERROR_FILE environment variable; + it will either be stderr, or a file of the user's choosing. + Non-static to prevent multiple gcov-aware shared objects from + instantiating their own copies. */ +FILE *__gcov_error_file = NULL; + +/* A utility function to populate the __gcov_error_file pointer. + This should NOT be called outside of the gcov system driver code. */ + +static FILE * +get_gcov_error_file(void) +{ +#if !IN_GCOV_TOOL + return stderr; +#else + char *gcov_error_filename = getenv ("GCOV_ERROR_FILE"); + + if (gcov_error_filename) + { + FILE *openfile = fopen (gcov_error_filename, "a"); + if (openfile) + __gcov_error_file = openfile; + } + if (!__gcov_error_file) + __gcov_error_file = stderr; + return __gcov_error_file; +#endif +} + +/* A utility function for outputting errors. */ static int __attribute__((format(printf, 1, 2))) gcov_error (const char *fmt, ...) { int ret; va_list argp; + + if (!__gcov_error_file) + __gcov_error_file = get_gcov_error_file (); + va_start (argp, fmt); - ret = vfprintf (stderr, fmt, argp); + ret = vfprintf (__gcov_error_file, fmt, argp); va_end (argp); return ret; } +#if !IN_GCOV_TOOL +static void +gcov_error_exit (void) +{ + if (__gcov_error_file && __gcov_error_file != stderr) + { + fclose (__gcov_error_file); + __gcov_error_file = NULL; + } +} +#endif + /* Make sure path component of the given FILENAME exists, create missing directories. FILENAME must be writable. Returns zero on success, or -1 if an error occurred. */ -- cgit v1.2.1