Viewing file:  diagnostic-test-show-trees-1.c (1.78 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-options "-O -fdiagnostics-show-caret" } */
/* This is an example file for use with
diagnostic_plugin_show_trees.c.
The plugin handles "__show_tree" by recursively dumping
the internal structure of the second input argument.
We want to accept an expression of any type. To do this in C, we
use variadic arguments, but C requires at least one argument before
the ellipsis, so we have a dummy one. */
extern void __show_tree (int dummy, ...);
extern double sqrt (double x);
void test_quadratic (double a, double b, double c)
{
__show_tree (0,
(-b + sqrt (b * b - 4 * a * c))
/ (2 * a));
/* { dg-begin-multiline-output "" }
(-b + sqrt (b * b - 4 * a * c))
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/ (2 * a));
^~~~~~~~~
{ dg-end-multiline-output "" } */
/* { dg-begin-multiline-output "" }
(-b + sqrt (b * b - 4 * a * c))
~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
{ dg-end-multiline-output "" } */
/* { dg-begin-multiline-output "" }
(-b + sqrt (b * b - 4 * a * c))
^~~~~~~~~~~~~~~~~~~~~~~~
{ dg-end-multiline-output "" } */
/* { dg-begin-multiline-output "" }
(-b + sqrt (b * b - 4 * a * c))
~~~~~~^~~~~~~~~~~
{ dg-end-multiline-output "" } */
/* { dg-begin-multiline-output "" }
(-b + sqrt (b * b - 4 * a * c))
~~^~~
{ dg-end-multiline-output "" } */
/* { dg-begin-multiline-output "" }
(-b + sqrt (b * b - 4 * a * c))
~~~~~~^~~
{ dg-end-multiline-output "" } */
/* { dg-begin-multiline-output "" }
(-b + sqrt (b * b - 4 * a * c))
~~^~~
{ dg-end-multiline-output "" } */
/* { dg-begin-multiline-output "" }
/ (2 * a));
~~~^~~~
{ dg-end-multiline-output "" } */
}
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